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1 answer
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nicola
</p></a></div> <!----></div></div> <div class="col-sm-9 col-md-10 col-lg-11 col-12" data-v-145a8bfc data-v-145a8bfc><div class="pt-0 col col-12" data-v-145a8bfc data-v-145a8bfc><span class="caption" data-v-145a8bfc>by
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nicola </a></span>,
<span class="caption" data-v-145a8bfc>9 months ago</span></div> <div class="forum-text ql-viewer" data-v-145a8bfc><p><span class="mention"><span><span><span class="mention"><span><span><span class="ql-mention-denotation-char">@</span>edison.lang</span></span></span> </span> </span></span></p><p>To overload the <code>istream</code> operator in C++, you need to define a global function with the following signature:</p><div style="color:#f8f8f2;background-color:#272822;">
<table style="border-spacing:0;padding:0;margin:0;border:0;"><tbody><tr><td style="vertical-align:top;padding:0;margin:0;border:0;">
<pre tabindex="0" style="color:#f8f8f2;background-color:#272822;"><span style="white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f">1
</span></pre></td>
<td style="vertical-align:top;padding:0;margin:0;border:0;;width:100%">
<pre tabindex="0" style="color:#f8f8f2;background-color:#272822;">istream<span style="color:#f92672">&</span> operator<span style="color:#f92672">>></span>(istream<span style="color:#f92672">&</span> <span style="color:#f92672">is</span>, Type<span style="color:#f92672">&</span> obj)
</pre></td></tr></tbody></table>
</div>
<p><br/></p><p>Here, <code>Type</code> is the type of the object you want to read from the input stream, and <code>obj</code> is a reference to this object. The function should read the data for the object from the input stream <code>is</code>, and return a reference to the stream.</p><p><br/></p><p>Here's an example of how you could overload the <code>istream</code> operator for a simple <code>Point</code> class:</p><div style="color:#f8f8f2;background-color:#272822;">
<table style="border-spacing:0;padding:0;margin:0;border:0;"><tbody><tr><td style="vertical-align:top;padding:0;margin:0;border:0;">
<pre tabindex="0" style="color:#f8f8f2;background-color:#272822;"><span style="white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f">1
</span><span style="white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f">2
</span><span style="white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f">3
</span><span style="white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f">4
</span><span style="white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f">5
</span><span style="white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f">6
</span><span style="white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f">7
</span><span style="white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f">8
</span><span style="white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f">9
</span></pre></td>
<td style="vertical-align:top;padding:0;margin:0;border:0;;width:100%">
<pre tabindex="0" style="color:#f8f8f2;background-color:#272822;"><span style="color:#66d9ef">class</span> <span style="color:#a6e22e">Point</span> {
<span style="color:#66d9ef">public</span>:
int x, y;
};
istream& <span style="color:#66d9ef">operator</span>>>(istream& <span style="color:#66d9ef">is</span>, Point& p) {
<span style="color:#66d9ef">is</span> >> p.x >> p.y;
<span style="color:#66d9ef">return</span> <span style="color:#66d9ef">is</span>;
}
</pre></td></tr></tbody></table>
</div>
<p><br/></p><p>You can then use the <code>>></code> operator to read a <code>Point</code> object from an input stream:</p><div style="color:#f8f8f2;background-color:#272822;">
<table style="border-spacing:0;padding:0;margin:0;border:0;"><tbody><tr><td style="vertical-align:top;padding:0;margin:0;border:0;">
<pre tabindex="0" style="color:#f8f8f2;background-color:#272822;"><span style="white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f">1
</span><span style="white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f">2
</span></pre></td>
<td style="vertical-align:top;padding:0;margin:0;border:0;;width:100%">
<pre tabindex="0" style="color:#f8f8f2;background-color:#272822;"><span style="color:#f92672">Point</span> <span style="color:#f92672">p</span><span style="color:#f92672">;</span>
<span style="color:#f92672">cin</span> <span style="color:#f92672">>></span> <span style="color:#f92672">p</span><span style="color:#f92672">;</span>
</pre></td></tr></tbody></table>
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<a href="https://mywebforum.com" target="_blank" data-v-600bef70>Questions & Answers platform</a></p></div></footer> <!----> <!----></div> <!----> <div class="js-scripts"></div></div></div></div></div><script>window.__NUXT__=(function(a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,_,$,aa,ab,ac,ad,ae,af,ag,ah,ai,aj,ak,al,am,an,ao,ap,aq,ar,as,at,au,av,aw,ax,ay,az,aA,aB,aC,aD,aE,aF,aG,aH,aI,aJ,aK,aL,aM,aN,aO,aP,aQ,aR,aS,aT,aU,aV,aW,aX,aY,aZ,a_,a$,ba,bb,bc,bd,be,bf,bg,bh,bi,bj,bk,bl,bm,bn,bo,bp,bq,br,bs,bt,bu){au.id=34527;au.name=v;au.messages=3871;au.threads=3238;au.meta_title=v;au.meta_description=v;au.children=e;au.icon="category\u002F1af0d4eb-63c1-4c93-893e-d9d6f8f880e3\u002Fphp.png";au.is_public=b;au.last_post={id:187259,message:"\u003Cp\u003E\u003Cspan class=\"mention\"\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan class=\"mention\"\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan class=\"ql-mention-denotation-char\"\u003E@\u003C\u002Fspan\u003Esavanah\u003C\u002Fspan\u003E\u003C\u002Fspan\u003E\u003C\u002Fspan\u003E \u003C\u002Fspan\u003E \u003C\u002Fspan\u003E\u003C\u002Fspan\u003E\u003C\u002Fp\u003E\u003Cp\u003EIn CodeIgniter, you can generate a string using the \u003Ccode\u003Erand()\u003C\u002Fcode\u003E function. Here's an example of how you can generate a random string:\u003C\u002Fp\u003E\u003Cpre class=\"code-block ql-syntax\" id=\"code-idp5do4\"\u003Efunction generate_random_string($length = 10) {\n $characters = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789';\n $string = '';\n\n for ($i = 0; $i < $length; $i++) {\n $string .= $characters[rand(0, strlen($characters) - 1)];\n }\n\n return $string;\n}\n\u003C\u002Fpre\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003EYou can call this function and specify the desired length of the string. For example, \u003Ccode\u003Egenerate_random_string(8)\u003C\u002Fcode\u003E will generate an 8-character long random string.\u003C\u002Fp\u003E",is_moderated:c,username:"melba_gorczany",user_active:a,created:"2023-09-27T02:23:12Z"};au.order=a;au.description=v;au.slug="php";av.id=34528;av.name=w;av.messages=3966;av.threads=3298;av.meta_title=w;av.meta_description=w;av.children=e;av.icon="category\u002F8bc6a538-1878-494b-a68f-d75c0788e762\u002Fjavascript-logo.png";av.is_public=b;av.last_post={id:187311,message:"\u003Cp\u003E\u003Cspan class=\"mention\"\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan class=\"mention\"\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan class=\"ql-mention-denotation-char\"\u003E@\u003C\u002Fspan\u003Ecruz.howell\u003C\u002Fspan\u003E\u003C\u002Fspan\u003E\u003C\u002Fspan\u003E \u003C\u002Fspan\u003E \u003C\u002Fspan\u003E\u003C\u002Fspan\u003E\u003C\u002Fp\u003E\u003Cp\u003ETo use a JavaScript function in an HTML file (such as index.html), you can follow these steps:\u003C\u002Fp\u003E\u003Col\u003E\u003Cli\u003E\u003Cstrong\u003ECreate a JavaScript file\u003C\u002Fstrong\u003E: Write your JavaScript code in a separate .js file. Let's say you create a file named "script.js".\n\u003C\u002Fli\u003E\u003Cli\u003E\u003Cstrong\u003ELink the JavaScript file\u003C\u002Fstrong\u003E: In your index.html file, include the JavaScript file by using the \u003C\u002Fli\u003E\u003C\u002Fol\u003E\u003Cpre class=\"code-block ql-syntax\" id=\"code-h65ky9y\"\u003E<script src="script.js"><\u002Fscript>\n\u003C\u002Fpre\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003EMake sure to adjust the \u003Ccode\u003Esrc\u003C\u002Fcode\u003E attribute value to the correct path of your "script.js" file, if it is in a different location.\u003C\u002Fp\u003E\u003Col\u003E\u003Cli\u003E\u003Cstrong\u003EDefine your function\u003C\u002Fstrong\u003E: Within the "script.js" file, define your JavaScript function. For example:\u003C\u002Fli\u003E\u003C\u002Fol\u003E\u003Cpre class=\"code-block ql-syntax\" id=\"code-ctp2aaf\"\u003Efunction myFunction() {\n \u002F\u002F Do something\n}\n\u003C\u002Fpre\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003EReplace \u003Ccode\u003EmyFunction()\u003C\u002Fcode\u003E with the name of your function and include the desired code within the function body.\u003C\u002Fp\u003E\u003Col\u003E\u003Cli\u003E\u003Cstrong\u003EInvoke the function\u003C\u002Fstrong\u003E: After defining the function, you can call (invoke) it in your HTML file. This can be done in various ways depending on how you want to trigger the function. Here are a couple of examples:\u003C\u002Fli\u003E\u003C\u002Fol\u003E\u003Cul\u003E\u003Cli\u003E\u003Cstrong\u003EButton Click\u003C\u002Fstrong\u003E: Add an HTML button element to your index.html file and attach an onclick attribute to it, like this:\u003C\u002Fli\u003E\u003C\u002Ful\u003E\u003Cpre class=\"code-block ql-syntax\" id=\"code-l7tv0l4\"\u003E<button onclick="myFunction()">Click me<\u002Fbutton>\n\u003C\u002Fpre\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003EIn this example, when the button is clicked, the \u003Ccode\u003EmyFunction()\u003C\u002Fcode\u003E function will be called.\u003C\u002Fp\u003E\u003Cul\u003E\u003Cli\u003E\u003Cstrong\u003EDocument Load\u003C\u002Fstrong\u003E: To automatically call the function when the HTML document is fully loaded, you can use the window.onload event and the function call:\u003C\u002Fli\u003E\u003C\u002Ful\u003E\u003Cpre class=\"code-block ql-syntax\" id=\"code-yguxo77\"\u003Ewindow.onload = function() {\n myFunction();\n};\n\u003C\u002Fpre\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003EThis will execute \u003Ccode\u003EmyFunction()\u003C\u002Fcode\u003E as soon as the page finishes loading.\u003C\u002Fp\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003EBy following these steps, you can use your JavaScript function in your index.html file.\u003C\u002Fp\u003E",is_moderated:c,username:"cameron.mccullough",user_active:a,created:"2023-09-27T18:43:35Z"};av.order=a;av.description=w;av.slug="javascript";aw.id=34529;aw.name=x;aw.messages=1292;aw.threads=1049;aw.meta_title=x;aw.meta_description=x;aw.children=e;aw.icon="category\u002Fc450d489-f776-42ad-a307-a876104daf91\u002Fsql.png";aw.is_public=b;aw.last_post={id:184545,message:"\u003Cp\u003E\u003Cspan class=\"mention\"\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan class=\"mention\"\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan class=\"ql-mention-denotation-char\"\u003E@\u003C\u002Fspan\u003Ejosh\u003C\u002Fspan\u003E\u003C\u002Fspan\u003E\u003C\u002Fspan\u003E \u003C\u002Fspan\u003E \u003C\u002Fspan\u003E\u003C\u002Fspan\u003E\u003C\u002Fp\u003E\u003Cp\u003EAlternatively, you can use the following command to check the cluster health:\u003C\u002Fp\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003Ecurl -XGET 'localhost:9200\u002F_cat\u002Fhealth?v'\u003C\u002Fp\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003EThis command will provide more detailed information about the cluster health, including the status, number of nodes, and the number of available shards.\u003C\u002Fp\u003E",is_moderated:c,username:"darion_leffler",user_active:a,created:"2023-09-08T08:53:15Z"};aw.order=a;aw.description=x;aw.slug="sql";ax.id=34530;ax.name=y;ax.messages=1068;ax.threads=843;ax.meta_title=y;ax.meta_description=y;ax.children=e;ax.icon="category\u002F6a57ef72-267d-44d0-b16f-0f5992a25150\u002Fgo2.png";ax.is_public=b;ax.last_post={id:184704,message:"\u003Cp\u003E\u003Cspan class=\"mention\"\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan class=\"mention\"\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan class=\"ql-mention-denotation-char\"\u003E@\u003C\u002Fspan\u003Ealana\u003C\u002Fspan\u003E\u003C\u002Fspan\u003E\u003C\u002Fspan\u003E \u003C\u002Fspan\u003E \u003C\u002Fspan\u003E\u003C\u002Fspan\u003E\u003C\u002Fspan\u003EIn order to read gzipped data from an HTTP response in Go, you can use the \u003Ccode\u003Egzip.NewReader()\u003C\u002Fcode\u003E function from the standard \u003Ccode\u003Ecompress\u002Fgzip\u003C\u002Fcode\u003E package. Here's an example:\u003C\u002Fp\u003E\u003Cpre class=\"code-block ql-syntax\" language=\"go\" id=\"code-ln8coo9\"\u003Epackage main\n\nimport (\n\t"compress\u002Fgzip"\n\t"fmt"\n\t"io\u002Fioutil"\n\t"net\u002Fhttp"\n)\n\nfunc main() {\n\turl := "https:\u002F\u002Fexample.com\u002Fsample.gz"\n\n\t\u002F\u002F Send HTTP GET request\n\tresp, err := http.Get(url)\n\tif err != nil {\n\t\tfmt.Println("Error:", err)\n\t\treturn\n\t}\n\tdefer resp.Body.Close()\n\n\t\u002F\u002F Create a gzip reader\n\treader, err := gzip.NewReader(resp.Body)\n\tif err != nil {\n\t\tfmt.Println("Error:", err)\n\t\treturn\n\t}\n\tdefer reader.Close()\n\n\t\u002F\u002F Read the gzipped data\n\tdata, err := ioutil.ReadAll(reader)\n\tif err != nil {\n\t\tfmt.Println("Error:", err)\n\t\treturn\n\t}\n\n\tfmt.Println(string(data))\n}\n\u003C\u002Fpre\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E",is_moderated:c,username:"eloy.johnston",user_active:a,created:"2023-09-09T02:53:51Z"};ax.order=a;ax.description=y;ax.slug="golang";ay.id=34531;ay.name=z;ay.messages=1286;ay.threads=762;ay.meta_title=z;ay.meta_description=z;ay.children=e;ay.icon="category\u002Ff079ddf7-48d4-4aa3-b2b8-9bf568c958be\u002Fhtmlcss.png";ay.is_public=b;ay.last_post={id:184232,message:"\u003Cp\u003E\u003Cspan class=\"mention\"\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan class=\"mention\"\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan class=\"ql-mention-denotation-char\"\u003E@\u003C\u002Fspan\u003Eviolette\u003C\u002Fspan\u003E\u003C\u002Fspan\u003E\u003C\u002Fspan\u003E \u003C\u002Fspan\u003E \u003C\u002Fspan\u003E\u003C\u002Fspan\u003E\u003C\u002Fp\u003E\u003Cp\u003EIn 2023, it is possible that Sass will still be widely used, as it has been a popular choice for many years due to its powerful features and excellent community support. Less is also a well-established preprocessor that may still have its place in the industry. Stylus, on the other hand, has been steadily growing in popularity and may continue to gain traction in the coming years.\u003C\u002Fp\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003EUltimately, the choice of which preprocessor to use should depend on your specific needs and requirements. Consider factors such as the level of support and documentation available, the features provided, the compatibility with your current tools and workflows, and the community ecosystem surrounding the preprocessor. It is also worth staying updated with the latest industry trends and keeping an eye on emerging preprocessors or new versions of existing ones that may gain popularity in the future.\u003C\u002Fp\u003E",is_moderated:c,username:"loy",user_active:a,created:"2023-09-04T18:23:15Z"};ay.order=a;ay.description=z;ay.slug="html-css";az.id=34532;az.name=A;az.messages=291;az.threads=223;az.meta_title=A;az.meta_description=A;az.children=e;az.icon="category\u002F375757a5-d49a-485d-94fc-d28d725ae104\u002Fruby2.png";az.is_public=b;az.last_post={id:169799,message:"\u003Cp\u003E\u003Cspan class=\"mention\"\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan class=\"mention\"\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan class=\"ql-mention-denotation-char\"\u003E@\u003C\u002Fspan\u003Eeric.hamill\u003C\u002Fspan\u003E\u003C\u002Fspan\u003E\u003C\u002Fspan\u003E \u003C\u002Fspan\u003E \u003C\u002Fspan\u003E\u003C\u002Fspan\u003E\u003C\u002Fp\u003E\u003Cp\u003ETo send an email in Ruby on Rails, you can use the Action Mailer framework. Here are the steps to send an email:\u003C\u002Fp\u003E\u003Col\u003E\u003Cli\u003EGenerate a mailer:\nRun the following command in the terminal to generate a mailer class:\nrails generate mailer SampleMailer\u003C\u002Fli\u003E\u003Cli\u003ESet up the mailer class:\nOpen the generated mailer class (app\u002Fmailers\u002Fsample_mailer.rb) and define the email method:\nclass SampleMailer < ApplicationMailer\ndef sample_email(user)\n@user = user\nmail(to: @user.email, subject: 'Sample Email')\nend\nend\u003C\u002Fli\u003E\u003Cli\u003ECreate an email view:\nCreate an email view file for the email template. For example, create app\u002Fviews\u002Fsample_mailer\u002Fsample_email.html.erb with the email content:\nWelcome, <%= @user.name %>!\nThis is a sample email.\u003C\u002Fli\u003E\u003Cli\u003ETrigger the email:\nIn your controller or any other place where you want to send the email, call the mailer method:\nSampleMailer.sample_email(current_user).deliver_now\u003C\u002Fli\u003E\u003C\u002Fol\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003EThat's it! The email will be sent to the specified user's email address.\u003C\u002Fp\u003E",is_moderated:c,username:aA,user_active:a,created:"2023-07-04T16:57:42Z"};az.order=a;az.description=A;az.slug="ruby";aB.id=34533;aB.name=B;aB.messages=1961;aB.threads=1455;aB.meta_title=B;aB.meta_description=B;aB.children=e;aB.icon="category\u002F1c348406-1653-4887-b583-7489de2310f3\u002Fpython.png";aB.is_public=b;aB.last_post={id:186926,message:"\u003Cp\u003E\u003Cspan class=\"mention\"\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan class=\"mention\"\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan class=\"ql-mention-denotation-char\"\u003E@\u003C\u002Fspan\u003Eaustyn.beer\u003C\u002Fspan\u003E\u003C\u002Fspan\u003E\u003C\u002Fspan\u003E \u003C\u002Fspan\u003E \u003C\u002Fspan\u003E\u003C\u002Fspan\u003E\u003C\u002Fp\u003E\u003Cp\u003EПриведенный код правильно разбирает POST-запрос в Django. Он импортирует модуль \u003Ccode\u003Ejson\u003C\u002Fcode\u003E для работы с JSON-данными и класс \u003Ccode\u003EHttpResponse\u003C\u002Fcode\u003E для отправки ответа на запрос.\u003C\u002Fp\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003EВ функции \u003Ccode\u003Emy_post_view\u003C\u002Fcode\u003E, код проверяет, является ли метод запроса POST-методом. Затем он декодирует тело запроса из байтовой строки в обычную строку, используя кодировку \u003Ccode\u003Eutf-8\u003C\u002Fcode\u003E. Затем строка декодируется из JSON в словарь с помощью \u003Ccode\u003Ejson.loads()\u003C\u002Fcode\u003E.\u003C\u002Fp\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003EВы можете получить доступ к данным из POST-запроса, используя ключи словаря \u003Ccode\u003Ebody_data\u003C\u002Fcode\u003E. В данном примере ключ \u003Ccode\u003E'key'\u003C\u002Fcode\u003E используется для доступа к значению. Вы должны изменить код в соответствии со структурой ваших данных в запросе.\u003C\u002Fp\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003EВ конце, код возвращает ответ \u003Ccode\u003EHttpResponse\u003C\u002Fcode\u003E с сообщением "Success".\u003C\u002Fp\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003EВы можете использовать этот код в вашем представлении Django для правильной обработки POST-запросов и доступа к данным из запроса.\u003C\u002Fp\u003E",is_moderated:c,username:"laury_ullrich",user_active:a,created:"2023-09-23T07:41:19Z"};aB.order=a;aB.description=B;aB.slug="python";aC.id=34534;aC.name=C;aC.messages=1196;aC.threads=994;aC.meta_title=C;aC.meta_description=C;aC.children=e;aC.icon="category\u002F3f08ec78-9350-4d01-9395-77978dfce7e1\u002Fjava.png";aC.is_public=b;aC.last_post={id:151929,message:"\u003Cp\u003EWhat is the best way of store arrays with hibernate?\u003C\u002Fp\u003E",is_moderated:c,username:"emma",user_active:a,created:"2023-09-05T08:10:48Z"};aC.order=a;aC.description=C;aC.slug="java";aD.id=Y;aD.name=i;aD.messages=591;aD.threads=452;aD.meta_title=i;aD.meta_description=i;aD.children=e;aD.icon="category\u002F427d0e6e-1883-44dd-aa69-96672f1362e5\u002Fc.png";aD.is_public=b;aD.last_post={id:187255,message:"\u003Cp\u003E\u003Cspan class=\"mention\"\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan class=\"mention\"\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan class=\"ql-mention-denotation-char\"\u003E@\u003C\u002Fspan\u003Earnoldo\u003C\u002Fspan\u003E\u003C\u002Fspan\u003E\u003C\u002Fspan\u003E \u003C\u002Fspan\u003E \u003C\u002Fspan\u003E\u003C\u002Fspan\u003E\u003C\u002Fp\u003E\u003Cp\u003EIn C++, you can iterate over a struct by accessing its elements using the dot (.) operator or the arrow (->) operator, depending on whether you are using an object or a pointer to the struct.\u003C\u002Fp\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003EHere is an example of how to iterate over a struct using a for loop:\u003C\u002Fp\u003E\u003Cpre class=\"code-block ql-syntax\" id=\"code-slwxrbl\"\u003E#include <iostream>\n\nstruct Person {\n std::string name;\n int age;\n};\n\nint main() {\n Person person1 = {"Alice", 25};\n Person person2 = {"Bob", 30};\n Person person3 = {"Charlie", 35};\n\n Person persons[] = {person1, person2, person3};\n int numPersons = sizeof(persons) \u002F sizeof(persons[0]);\n\n for (int i = 0; i < numPersons; ++i) {\n std::cout << "Name: " << persons[i].name << ", Age: " << persons[i].age << std::endl;\n }\n\n return 0;\n}\n\u003C\u002Fpre\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003EOutput:\u003C\u002Fp\u003E\u003Cpre class=\"code-block ql-syntax\" id=\"code-1cus9na\"\u003EName: Alice, Age: 25\nName: Bob, Age: 30\nName: Charlie, Age: 35\n\u003C\u002Fpre\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003EIn this example, the struct \u003Ccode\u003EPerson\u003C\u002Fcode\u003E has two members: \u003Ccode\u003Ename\u003C\u002Fcode\u003E of type \u003Ccode\u003Estd::string\u003C\u002Fcode\u003E and \u003Ccode\u003Eage\u003C\u002Fcode\u003E of type \u003Ccode\u003Eint\u003C\u002Fcode\u003E. We create three instances of the struct and store them in an array called \u003Ccode\u003Epersons[]\u003C\u002Fcode\u003E.\u003C\u002Fp\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003EWe calculate the number of persons in the array by dividing the total size of the array by the size of a single person (\u003Ccode\u003Esizeof(persons) \u002F sizeof(persons[0])\u003C\u002Fcode\u003E).\u003C\u002Fp\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003EThen, we use a for loop to iterate over each person in the array. We access the \u003Ccode\u003Ename\u003C\u002Fcode\u003E and \u003Ccode\u003Eage\u003C\u002Fcode\u003E members of each person using the dot (.) operator.\u003C\u002Fp\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003EFinally, we print the name and age of each person using \u003Ccode\u003Estd::cout\u003C\u002Fcode\u003E.\u003C\u002Fp\u003E",is_moderated:c,username:aA,user_active:a,created:"2023-09-27T01:34:21Z"};aD.order=a;aD.description=i;aD.slug=ak;aE.id=34536;aE.name=D;aE.messages=325;aE.threads=232;aE.meta_title=D;aE.meta_description=D;aE.children=e;aE.icon="category\u002Fe1951c3a-5f15-4bff-b2a1-43f9148ea154\u002Fswift.png";aE.is_public=b;aE.last_post={id:184468,message:"\u003Cp\u003E\u003Cspan class=\"mention\"\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan class=\"mention\"\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan class=\"ql-mention-denotation-char\"\u003E@\u003C\u002Fspan\u003Enicola\u003C\u002Fspan\u003E\u003C\u002Fspan\u003E\u003C\u002Fspan\u003E \u003C\u002Fspan\u003E \u003C\u002Fspan\u003E\u003C\u002Fspan\u003E\u003C\u002Fp\u003E\u003Cp\u003EYes, based on the information provided, Swift is definitely enough for iOS development. It has several advantages over Objective-C, such as simplicity, a more natural language-like syntax, and easier debugging. Swift is also gaining popularity and has been included in the iOS 9 software development kit. Companies like Netflix, IBM, and PayPal have already adopted Swift, and it is expected to be as popular as Objective-C in the near future. Swift is designed to be user-friendly for both experienced developers and beginners, and its modern design and syntax make coding easier for developers working with other languages as well. Overall, Swift is a powerful language that is well-suited for iOS app development.\u003C\u002Fp\u003E",is_moderated:c,username:"sister",user_active:a,created:"2023-09-07T19:23:11Z"};aE.order=a;aE.description=D;aE.slug="swift";aF.id=36177;aF.name=aa;aF.messages=7653;aF.threads=6795;aF.meta_title=aG;aF.meta_description=aG;aF.children=e;aF.icon="category\u002F25bf8071-d225-4b00-add3-5ce12dedc414\u002Fic-2dev.png";aF.is_public=b;aF.last_post={id:187309,message:"\u003Cp\u003E\u003Cspan class=\"mention\"\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan class=\"mention\"\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan class=\"ql-mention-denotation-char\"\u003E@\u003C\u002Fspan\u003Elina.brakus\u003C\u002Fspan\u003E\u003C\u002Fspan\u003E\u003C\u002Fspan\u003E \u003C\u002Fspan\u003E \u003C\u002Fspan\u003E\u003C\u002Fspan\u003E\u003C\u002Fp\u003E\u003Cp\u003ETo plot 2 functions with Julia, you can use the \u003Ccode\u003EPlots\u003C\u002Fcode\u003E package. Here is an example of how to plot two functions:\u003C\u002Fp\u003E\u003Col\u003E\u003Cli\u003EFirst, install the Plots package by running the following command in your Julia environment:\u003C\u002Fli\u003E\u003C\u002Fol\u003E\u003Cpre class=\"code-block ql-syntax\" id=\"code-e652lks\"\u003Eusing Pkg\nPkg.add("Plots")\n\u003C\u002Fpre\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Col\u003E\u003Cli\u003ENow, you can create a Julia script or use the Julia REPL (interactive prompt) to plot the functions.\nStart by importing the Plots package and other plotting-related packages:\u003C\u002Fli\u003E\u003C\u002Fol\u003E\u003Cpre class=\"code-block ql-syntax\" id=\"code-hz4cx3j\"\u003Eusing Plots\n\u003C\u002Fpre\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Col\u003E\u003Cli\u003EDefine the two functions you want to plot. For example, let's plot a sine function and a cosine function:\u003C\u002Fli\u003E\u003C\u002Fol\u003E\u003Cpre class=\"code-block ql-syntax\" id=\"code-yu5irw9\"\u003Ef(x) = sin(x)\ng(x) = cos(x)\n\u003C\u002Fpre\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Col\u003E\u003Cli\u003ENext, create a range of x-values for the plot using the range function. For example, we can create a range from -π to π:\u003C\u002Fli\u003E\u003C\u002Fol\u003E\u003Cpre class=\"code-block ql-syntax\" id=\"code-j4ajxvd\"\u003Ex = range(-π, π, length=100)\n\u003C\u002Fpre\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Col\u003E\u003Cli\u003ECreate the plot by calling the plot function and passing in the x-values and the function values:\u003C\u002Fli\u003E\u003C\u002Fol\u003E\u003Cpre class=\"code-block ql-syntax\" id=\"code-3lkdn3c\"\u003Eplot(x, f.(x), label="sin(x)")\nplot!(x, g.(x), label="cos(x)")\n\u003C\u002Fpre\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003EHere, \u003Ccode\u003Ef.(x)\u003C\u002Fcode\u003E and \u003Ccode\u003Eg.(x)\u003C\u002Fcode\u003E are used to apply the functions element-wise to the range of x-values.\nThe \u003Ccode\u003Elabel\u003C\u002Fcode\u003E argument is used to provide a label for each function in the legend.\u003C\u002Fp\u003E\u003Col\u003E\u003Cli\u003EFinally, display the plot by calling the display or show function:\u003C\u002Fli\u003E\u003C\u002Fol\u003E\u003Cpre class=\"code-block ql-syntax\" id=\"code-oy8riy6\"\u003Edisplay(plot)\n\u003C\u002Fpre\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003Eor\u003C\u002Fp\u003E\u003Cpre class=\"code-block ql-syntax\" id=\"code-178wk4c\"\u003Eshow(plot)\n\u003C\u002Fpre\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003EThis will produce a plot with the two functions displayed on it. You can customize the appearance of the plot by using different plot options and styling functions provided by the \u003Ccode\u003EPlots\u003C\u002Fcode\u003E package.\u003C\u002Fp\u003E",is_moderated:c,username:"matteo",user_active:a,created:"2023-09-27T17:58:33Z"};aF.order=a;aF.description=aa;aF.slug="other";return {layout:aj,data:[{sanitizedMessage:j,thread:{id:92424,name:j,message:"\u003Cp\u003EHow to overload the istream operator in C++?\u003C\u002Fp\u003E",formatted_message:d,hash_tags:"[\"c++\",\"cplusplus\",\"istream\"]",tags:["c++","cplusplus","istream","mywebforum"],category:{id:Y,name:i,messages:a,threads:a,meta_title:d,meta_description:d,children:e,icon:d,is_public:b,order:a,description:i,slug:ak},category_id:Y,slug:al,likes:31,dislikes:a,is_closed:b,is_pinned:b,is_moderated:c,username:"edison.lang",user_active:f,role:g,user_avatar:"avatar\u002Fedison.lang\u002Fprikolnie-aviki-f-it-ru200.gif",created:"2022-12-30T23:24:02Z"},relatedThreads:[{id:109937,title:am,text:am,avatar:"avatar\u002Fyasmeen\u002F3003.jpg",role:g,slug:"what-is-operator-overloading-in-c",username:"yasmeen",created:"2023-03-14T05:26:42Z"},{id:111636,title:an,text:an,avatar:"avatar\u002Fchadrick_stanton\u002F115-2.jpg",role:g,slug:"what-is-the-difference-between-a-bit-wise-or",username:"chadrick_stanton",created:"2023-03-18T02:12:40Z"},{id:111535,title:ao,text:ao,avatar:"avatar\u002Ffreddy\u002F137-2 (1).jpg",role:g,slug:"what-is-the-difference-between-a-bit-wise-and",username:"freddy",created:"2023-03-17T22:10:45Z"},{id:118215,title:ap,text:ap,avatar:"avatar\u002Fconsuelo\u002F785901715.jpg",role:g,slug:"how-to-use-the-c-operator-in-cython",username:"consuelo",created:"2023-04-08T05:46:10Z"},{id:111741,title:aq,text:aq,avatar:"avatar\u002Fjakob\u002F2765.jpg",role:g,slug:"what-is-the-difference-between-a-bit-wise-xor",username:"jakob",created:"2023-03-18T06:18:56Z"}],socialSettings:{id:1876,size:a,facebook:c,vk:b,ok:b,linkedin:c,telegram:c,whatsapp:c,pocket:b,twitter:c,active:c},page:f,totals:f,postsTotal:f,posts:[{id:125454,message:"\u003Cp\u003E\u003Cspan class=\"mention\"\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan class=\"mention\"\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan class=\"ql-mention-denotation-char\"\u003E@\u003C\u002Fspan\u003Eedison.lang\u003C\u002Fspan\u003E\u003C\u002Fspan\u003E\u003C\u002Fspan\u003E \u003C\u002Fspan\u003E \u003C\u002Fspan\u003E\u003C\u002Fspan\u003E\u003C\u002Fp\u003E\u003Cp\u003ETo overload the \u003Ccode\u003Eistream\u003C\u002Fcode\u003E operator in C++, you need to define a global function with the following signature:\u003C\u002Fp\u003E\u003Cpre class=\"code-block ql-syntax\" id=\"code-44xog23\" language=\"python\"\u003Eistream& operator>>(istream& is, Type& obj)\n\u003C\u002Fpre\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003EHere, \u003Ccode\u003EType\u003C\u002Fcode\u003E is the type of the object you want to read from the input stream, and \u003Ccode\u003Eobj\u003C\u002Fcode\u003E is a reference to this object. The function should read the data for the object from the input stream \u003Ccode\u003Eis\u003C\u002Fcode\u003E, and return a reference to the stream.\u003C\u002Fp\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003EHere's an example of how you could overload the \u003Ccode\u003Eistream\u003C\u002Fcode\u003E operator for a simple \u003Ccode\u003EPoint\u003C\u002Fcode\u003E class:\u003C\u002Fp\u003E\u003Cpre class=\"code-block ql-syntax\" id=\"code-6jpygfk\" language=\"kotlin\"\u003Eclass Point {\n public:\n int x, y;\n};\n\nistream& operator>>(istream& is, Point& p) {\n is >> p.x >> p.y;\n return is;\n}\n\u003C\u002Fpre\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003EYou can then use the \u003Ccode\u003E>>\u003C\u002Fcode\u003E operator to read a \u003Ccode\u003EPoint\u003C\u002Fcode\u003E object from an input stream:\u003C\u002Fp\u003E\u003Cpre class=\"code-block ql-syntax\" id=\"code-a37j1sq\" language=\"css\"\u003EPoint p;\ncin >> p;\n\u003C\u002Fpre\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E",formatted_message:"\u003Cp\u003E\u003Cspan class=\"mention\"\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan class=\"mention\"\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan class=\"ql-mention-denotation-char\"\u003E@\u003C\u002Fspan\u003Eedison.lang\u003C\u002Fspan\u003E\u003C\u002Fspan\u003E\u003C\u002Fspan\u003E \u003C\u002Fspan\u003E \u003C\u002Fspan\u003E\u003C\u002Fspan\u003E\u003C\u002Fp\u003E\u003Cp\u003ETo overload the \u003Ccode\u003Eistream\u003C\u002Fcode\u003E operator in C++, you need to define a global function with the following signature:\u003C\u002Fp\u003E\u003Cdiv style=\"color:#f8f8f2;background-color:#272822;\"\u003E\n\u003Ctable style=\"border-spacing:0;padding:0;margin:0;border:0;\"\u003E\u003Ctbody\u003E\u003Ctr\u003E\u003Ctd style=\"vertical-align:top;padding:0;margin:0;border:0;\"\u003E\n\u003Cpre tabindex=\"0\" style=\"color:#f8f8f2;background-color:#272822;\"\u003E\u003Cspan style=\"white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f\"\u003E1\n\u003C\u002Fspan\u003E\u003C\u002Fpre\u003E\u003C\u002Ftd\u003E\n\u003Ctd style=\"vertical-align:top;padding:0;margin:0;border:0;;width:100%\"\u003E\n\u003Cpre tabindex=\"0\" style=\"color:#f8f8f2;background-color:#272822;\"\u003Eistream\u003Cspan style=\"color:#f92672\"\u003E&\u003C\u002Fspan\u003E operator\u003Cspan style=\"color:#f92672\"\u003E>>\u003C\u002Fspan\u003E(istream\u003Cspan style=\"color:#f92672\"\u003E&\u003C\u002Fspan\u003E \u003Cspan style=\"color:#f92672\"\u003Eis\u003C\u002Fspan\u003E, Type\u003Cspan style=\"color:#f92672\"\u003E&\u003C\u002Fspan\u003E obj)\n\u003C\u002Fpre\u003E\u003C\u002Ftd\u003E\u003C\u002Ftr\u003E\u003C\u002Ftbody\u003E\u003C\u002Ftable\u003E\n\u003C\u002Fdiv\u003E\n\u003Cp\u003E\u003Cbr\u002F\u003E\u003C\u002Fp\u003E\u003Cp\u003EHere, \u003Ccode\u003EType\u003C\u002Fcode\u003E is the type of the object you want to read from the input stream, and \u003Ccode\u003Eobj\u003C\u002Fcode\u003E is a reference to this object. The function should read the data for the object from the input stream \u003Ccode\u003Eis\u003C\u002Fcode\u003E, and return a reference to the stream.\u003C\u002Fp\u003E\u003Cp\u003E\u003Cbr\u002F\u003E\u003C\u002Fp\u003E\u003Cp\u003EHere's an example of how you could overload the \u003Ccode\u003Eistream\u003C\u002Fcode\u003E operator for a simple \u003Ccode\u003EPoint\u003C\u002Fcode\u003E class:\u003C\u002Fp\u003E\u003Cdiv style=\"color:#f8f8f2;background-color:#272822;\"\u003E\n\u003Ctable style=\"border-spacing:0;padding:0;margin:0;border:0;\"\u003E\u003Ctbody\u003E\u003Ctr\u003E\u003Ctd style=\"vertical-align:top;padding:0;margin:0;border:0;\"\u003E\n\u003Cpre tabindex=\"0\" style=\"color:#f8f8f2;background-color:#272822;\"\u003E\u003Cspan style=\"white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f\"\u003E1\n\u003C\u002Fspan\u003E\u003Cspan style=\"white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f\"\u003E2\n\u003C\u002Fspan\u003E\u003Cspan style=\"white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f\"\u003E3\n\u003C\u002Fspan\u003E\u003Cspan style=\"white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f\"\u003E4\n\u003C\u002Fspan\u003E\u003Cspan style=\"white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f\"\u003E5\n\u003C\u002Fspan\u003E\u003Cspan style=\"white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f\"\u003E6\n\u003C\u002Fspan\u003E\u003Cspan style=\"white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f\"\u003E7\n\u003C\u002Fspan\u003E\u003Cspan style=\"white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f\"\u003E8\n\u003C\u002Fspan\u003E\u003Cspan style=\"white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f\"\u003E9\n\u003C\u002Fspan\u003E\u003C\u002Fpre\u003E\u003C\u002Ftd\u003E\n\u003Ctd style=\"vertical-align:top;padding:0;margin:0;border:0;;width:100%\"\u003E\n\u003Cpre tabindex=\"0\" style=\"color:#f8f8f2;background-color:#272822;\"\u003E\u003Cspan style=\"color:#66d9ef\"\u003Eclass\u003C\u002Fspan\u003E \u003Cspan style=\"color:#a6e22e\"\u003EPoint\u003C\u002Fspan\u003E {\n \u003Cspan style=\"color:#66d9ef\"\u003Epublic\u003C\u002Fspan\u003E:\n int x, y;\n};\n\nistream& \u003Cspan style=\"color:#66d9ef\"\u003Eoperator\u003C\u002Fspan\u003E>>(istream& \u003Cspan style=\"color:#66d9ef\"\u003Eis\u003C\u002Fspan\u003E, Point& p) {\n \u003Cspan style=\"color:#66d9ef\"\u003Eis\u003C\u002Fspan\u003E >> p.x >> p.y;\n \u003Cspan style=\"color:#66d9ef\"\u003Ereturn\u003C\u002Fspan\u003E \u003Cspan style=\"color:#66d9ef\"\u003Eis\u003C\u002Fspan\u003E;\n}\n\u003C\u002Fpre\u003E\u003C\u002Ftd\u003E\u003C\u002Ftr\u003E\u003C\u002Ftbody\u003E\u003C\u002Ftable\u003E\n\u003C\u002Fdiv\u003E\n\u003Cp\u003E\u003Cbr\u002F\u003E\u003C\u002Fp\u003E\u003Cp\u003EYou can then use the \u003Ccode\u003E>>\u003C\u002Fcode\u003E operator to read a \u003Ccode\u003EPoint\u003C\u002Fcode\u003E object from an input stream:\u003C\u002Fp\u003E\u003Cdiv style=\"color:#f8f8f2;background-color:#272822;\"\u003E\n\u003Ctable style=\"border-spacing:0;padding:0;margin:0;border:0;\"\u003E\u003Ctbody\u003E\u003Ctr\u003E\u003Ctd style=\"vertical-align:top;padding:0;margin:0;border:0;\"\u003E\n\u003Cpre tabindex=\"0\" style=\"color:#f8f8f2;background-color:#272822;\"\u003E\u003Cspan style=\"white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f\"\u003E1\n\u003C\u002Fspan\u003E\u003Cspan style=\"white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 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