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“var” or no “var” in JavaScript's “for-in” loop?

... is a commonly seen pattern but it's different from for(int i; ...) in C++ in that that the variable isn't scoped to the for block. In fact, the var gets hoisted to the top of the enclosing scope (function) so a local i will be effectively available both before the for loop (after the beginning...
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HTTP status code for update and delete?

... For a PUT request: HTTP 200 or HTTP 204 should imply "resource updated successfully". For a DELETE request: HTTP 200 or HTTP 204 should imply "resource deleted successfully". HTTP 202 can also be returned which would imply that the instruction was ...
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Retina displays, high-res background images

...d:url('images/box-bg@2x.png') no-repeat top left; background-size: 200px 200px; } } EDIT To add a little more to this answer, here is the retina detection query I tend to use: @media only screen and (-webkit-min-device-pixel-ratio: 2), only screen and ( min--moz-device-pixel-rati...
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Draw Circle using css alone [duplicate]

...a circle (25CF). .circle:before { content: ' \25CF'; font-size: 200px; } <span class="circle"></span> I suggest this as border-radius won't work in IE8 and below (I recognize the fact that the suggestion is a bit mental). ...
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How to return a 200 HTTP Status Code from ASP.NET MVC 3 controller

...ssing code here //If not using MVC5 return new HttpStatusCodeResult(200); //If using MVC5 return new HttpStatusCodeResult(HttpStatusCode.OK); // OK = 200 } share | improve this answe...
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CSS3 background image transition

...iv class="images-container"> <img src="http://lorempixel.com/400/200/animals/9/"> <img src="http://lorempixel.com/400/200/animals/10/"> </div> with CSS3 selectors http://jsfiddle.net/eD2zL/1/ (if you use this one, "normal" state will be first child your container, or ...
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CSS Progress Circle [closed]

...t enables it: .clip1 { position:absolute; top:0;left:0; width:200px; height:200px; clip:rect(0px,200px,200px,100px); } .slice1 { position:absolute; width:200px; height:200px; clip:rect(0px,100px,200px,0px); -moz-border-radius:100px; -webkit-border-radius:...
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Getting Http Status code number (200, 301, 404, etc.) from HttpWebRequest and HttpWebResponse

...returned from a HttpWebRequest . I was hoping to get the actual numbers (200, 301,302, 404, etc.) rather than the text description. ("Ok", "MovedPermanently", etc.) Is the number buried in a property somewhere in the response object? Any ideas other than creating a big switch function? Thanks....
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Stacking DIVs on top of each other?

...bsolue <div style='left: 100px; top: 100px; position: absolute; width: 200px; height: 200px;'></div> <div style='left: 100px; top: 100px; position: absolute; width: 200px; height: 200px;'></div> we do expect that there will be one box on the screen. To do that we must set ...
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super() in Java

... 1 class Base { int a = 100; } class Sup1 extends Base { int a = 200; void Show() { System.out.println(a); System.out.println(a); } public static void main(String[] args) { new Sup1().Show(); } } Output: 200 200 Now check out progra...