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Using success/error/finally/catch with Promises in AngularJS

...lves synchronously with asynchronous code. They represent a execution of a one time task. They also provide exception handling, just like normal code, you can return from a promise or you can throw. What you'd want in synchronous code is: try{ try{ var res = $http.getSync("url"); re...
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In C, do braces act as a stack frame?

.... The relevant part of the C standard is 6.2.4p5: For such an object [one that has automatic storage duration] that does not have a variable length array type, its lifetime extends from entry into the block with which it is associated until execution of that block ends in any way. (En...
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SQL Server: Difference between PARTITION BY and GROUP BY

...atement to collect data across multiple records and group the results by one or more columns. In more simple words GROUP BY statement is used in conjunction with the aggregate functions to group the result-set by one or more columns. Syntax: SELECT expression1, expression2, ... expr...
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What is copy-on-write?

...n-write is and what it is used for? The term 'copy-on-write array' is mentioned several times in the Sun JDK tutorials but I didn't understand what it meant. ...
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node.js require all files in a folder?

...h of a folder, it'll look for an index.js file in that folder; if there is one, it uses that, and if there isn't, it fails. It would probably make most sense (if you have control over the folder) to create an index.js file and then assign all the "modules" and then simply require that. yourfile.js...
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Setting environment variables on OS X

... Bruno is right on track. I've done extensive research and if you want to set variables that are available in all GUI applications, your only option is /etc/launchd.conf. Please note that environment.plist does not work for applications launched via Spotli...
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How can I enable or disable the GPS programmatically on Android?

...e following to test if the existing version of the power control widget is one which will allow you to toggle the gps. private boolean canToggleGPS() { PackageManager pacman = getPackageManager(); PackageInfo pacInfo = null; try { pacInfo = pacman.getPackageInfo("com.android.se...
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Creating C macro with ## and __LINE__ (token concatenation with positioning macro)

... The __COUNTER__ macro didn't work for me in gcc; although the __LINE__ one did work as advertised. – Tyler Sep 30 '11 at 0:27 ...
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How to use hex color values

I am trying to use hex color values in Swift, instead of the few standard ones that UIColor allows you to use, but I have no idea how to do it. ...
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What does [:] mean?

...ut NumPy arrays here. Rather than using A[deque(chain((k,), repeat(slice(None), len(A.shape) - 1)).rotate(axis)], I'd almost always prefer numpy.rollaxis(A, axis, 0)[k]. In general, I've rarely come across a use case where you would need to directly create slice() objects. If you need them anyway...