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Make copy of an array

... say a = [1,2,3,4,5] . I need to make an exact duplicate copy of a and call it b . If a were to change to [6,7,8,9,10] , b should still be [1,2,3,4,5] . What is the best way to do this? I tried a for loop like: ...
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What's the best way to check if a file exists in C?

... There are pitfalls associated with access(). There is a TOCTOU (time of check, time of use) window of vulnerability between using access() and whatever else you do afterwards. [...to be continued...] – Jonathan Leff...
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Support for “border-radius” in IE

...es! When IE9 is released in Jan 2011. Let's say you want an even 15px on all four sides: .myclass { border-style: solid; border-width: 2px; -moz-border-radius: 15px; -webkit-border-radius: 15px; border-radius: 15px; } IE9 will use the default border-radius, so just make sure you include th...
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pycharm convert tabs to spaces automatically

... giving errors everywhere because it can't convert tabs to spaces automatically is there a way to achieve this. 7 Answers ...
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Visual Studio 2013 hangs when opening a solution

I installed VS2013 (v12.0.21005.1) and added ReSharper 8 (v8.0.2000.2660) a day or two ago. That day it was fine. Now I'm lucky if I can get it to open one solution in a whole day. It opens OK by itself, but when I try and open a solution from within - via the menu - it hangs, badly. If I right-clic...
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What is a patch in git version control?

...as another concrete example. Nowadays, the GitHub pull request makes it really easy to apply patches on GitHub repos, which is useful when you aren't a direct contributor (ie you have no right to directly push to a repo). Actually, fairly recently GitHub introduced "Better Pull Request Emails" to i...
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What is meaning of boolean value returned from an event-handling method in Android

... in the rest of the events in that gesture. A "gesture" in this case means all events until the final ACTION_UP or ACTION_CANCEL. Returning false from an ACTION_DOWN means you do not want the event and other views will have the opportunity to handle it. If you have overlapping views this can be a si...
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CSS selector for first element with class

...lass. One workaround that Lea Verou and I came up with for this (albeit totally independently) is to first apply your desired styles to all your elements with that class: /* * Select all .red children of .home, including the first one, * and give them a border. */ .home > .red { border: ...
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How to jump to top of browser page

... Is this supported in all browsers? – Pacerier May 27 '13 at 12:56 1 ...
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How can I switch my signed in user in Visual Studio 2013?

...ign in with a Microsoft Account and have your settings be persisted across all of your instances of Visual Studio, amongst other things. ...