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Would it be beneficial to begin using instancetype instead of id?

...stancetype that, as far as I can see, replaces id as a return type in -alloc and init . 4 Answers ...
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Is there a standard function to check for null, undefined, or blank variables in JavaScript?

...t undefined or null ? I've got this code, but I'm not sure if it covers all cases: 41 Answers ...
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How can I recover a removed file in Mercurial (if at all)?

Accidentally, by using a GUI as opposed to CLI, I removed every file in a Mercurial project. 9 Answers ...
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xUnit.net: Global setup + teardown?

... protected TestsBase() { // Do "global" initialization here; Called before every test method. } public void Dispose() { // Do "global" teardown here; Called after every test method. } } public class DummyTests : TestsBase { // Add test methods } However, ...
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How to find index of all occurrences of element in array?

I am trying to find the index of all the instances of an element, say, "Nano", in a JavaScript array. 15 Answers ...
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Java SecurityException: signer information does not match

...from directories since those AFAIK cannot be signed). So either make sure all JARs (or at least those which contain classes from the same packages) are signed using the same certificate, or remove the signatures from the manifest of JAR files with overlapping packages. ...
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Is it possible to install APK file if more than one emulators/devices are connected [duplicate]

I know how to install the apk file in to the emulator by command prompt and all that. But i want to know is it possible to install same apk file in to multiple emulator by giving any specific name ? Actually i have to test one apk file in to many device. and for that i have started many device. I kn...
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Rails server says port already used, how to kill that process?

...you're looking to kill whatever is on port 3000 (which is what webrick normally uses), type this in your terminal to find out the PID of the process: $ lsof -wni tcp:3000 Then, use the number in the PID column to kill the process: $ kill -9 PID ...
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Checkout subdirectories in Git?

...lace outside of the working copy) that I got used to just making lots of small single-purpose repositories. If you insist (or really need it), though, you could make a git repository with just mytheme and myplugins directories and symlink those from within the WordPress install. MDCore wrote: ...
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What's the difference between Cache-Control: max-age=0 and no-cache?

... request without successful revalidation with the origin server. This allows an origin server to prevent caching even by caches that have been configured to return stale responses to client requests. In other words, caches may sometimes choose to use a stale response (although I belie...