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Insert a line at specific line number with sed or awk
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@waLLe, start with the awk info page which has a nice description of how awk works. Here, I have 2 "condition {action}" pairs, the 2nd has no condition which means the action is performed for every record. After you finish reading an...
Automatically import modules when entering the python or ipython interpreter
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Use the environment variable PYTHONSTARTUP. From the official documentation:
If this is the name of a readable file, the Python commands in that
file are executed before the first prompt is displayed in interactive
mode. The file is executed in the sam...
Make function wait until element exists
... add a canvas over another canvas – how can I make this function wait to start until the first canvas is created?
10 Answ...
renderpartial with null model gets passed the wrong type
...or the user. Let's say I'm used to what my colleage uses in his project, I start a fresh one. Then totally forget to add this overload and voilla, the exceptions start happening in production because we didn't test it well enough. A different name is beter imho.
– Jaap
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Testing web application on Mac/Safari when I don't own a Mac
...d when viewed using Safari on the Mac (by a potential customer), I need to start testing how my sites look when viewed on a Mac.
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Remove all subviews?
...of the array is kept
When removing all the subviews, it is a good idea to start deleting at the end of the array and keep deleting until you reach the beginning. This can be accomplished with this two lines of code:
for (int i=mySuperView.subviews.count-1; i>=0; i--)
[[mySuperView.subvi...
Handle ModelState Validation in ASP.NET Web API
...d, using an ActionFilter and jQuery: http://asp.net/web-api/videos/getting-started/custom-validation
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How should I validate an e-mail address?
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I'm a bit confused why you start this answer with "Don't use a reg-ex" and then proceed to provide a reg-ex.
– howettl
Aug 1 '13 at 19:21
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Is there a way to squash a number of commits non-interactively?
... our repo and the relative path is known). Then they don't even need to restart terminal.
– n8tr
Jun 12 '14 at 20:28
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applicationWillEnterForeground vs. applicationDidBecomeActive, applicationWillResignActive vs. appli
...id)applicationDidBecomeActive:(UIApplication *)application
{
/*
Restart any tasks that were paused (or not yet started) while the
application was inactive. If the application was previously in the
background, optionally refresh the user interface.
*/
}
- (void)applicationW...