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How to get the first line of a file in a bash script?

...bshell, and using an external command (any external command) means you're calling execve(), invoking the linker and loader (if it's using shared libraries, which is usually the case), etc. – Charles Duffy Aug 1 '17 at 16:17 ...
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What is the difference between `let` and `var` in swift?

... C and C++ allows Unicode identifiers as well, via UCNs. If the compiler supports any Unicode source encoding then you can just use the Unicode characters directly. For example auto ???????? = "dogcow"; works in C++ for clang. ...
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“register” keyword in C?

... a processor register if possible. Most modern compilers do that automatically, and are better at picking them than us humans. share | improve this answer | follow ...
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How to create P12 certificate for iOS distribution

...rom your hard drive Click Generate Click Download to get the file C. Install .cer and generate .p12 certificate Find .cer file you’ve downloaded and double-click Set Login drop-down to “login" and Click Add Open up KeyChain Access and you'll find profile created in Step A You can expand “p...
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Python 3: ImportError “No Module named Setuptools”

I'm having troubles with installing packages in Python 3. 9 Answers 9 ...
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Modelling an elevator using Object-Oriented Analysis and Design [closed]

... This is one of them; unfortunately, my OOP professor in college never actually gave an answer to it, and so I've been wondering. ...
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Xcode 4.2 debug doesn't symbolicate stack call

... NSLog(@"CRASH: %@", exception); NSLog(@"Stack Trace: %@", [exception callStackSymbols]); // Internal error reporting } Next, add the exception handler to your app delegate: - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { ...
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Is it feasible to do (serious) web development in Lisp? [closed]

...e almost any kind of application in almost any programming language, especially in such a powerful one as Lisp (be it Scheme or Common Lisp). But is it practical to use it for web development? If so, what should be a good starting point? Where can be found the proper resources (tools, libraries, doc...
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Creating an iframe with given HTML dynamically

...cross browsers and it's only over a year after I answered that someone actually complained. No it's not cross browser. But let's be honest if you want code quality there is probably a much cleaner solution than using a iframe in the first place :) – GillesC N...
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How to make node.js require absolute? (instead of relative)

... There's a really interesting section in the Browserify Handbook: avoiding ../../../../../../.. Not everything in an application properly belongs on the public npm and the overhead of setting up a private npm or git repo is sti...