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Rails migration for has_and_belongs_to_many join table
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This is the only reply that actually answers the question.
– pingu
Aug 17 '12 at 10:57
8
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How do I change tab size in Vim?
...at tabs are displayed as 4 spaces. Setting expandtab will cause Vim to actually insert spaces (the number of them being controlled by tabstop) when you press tab; you might want to use softtabstop to make backspace work properly (that is, reduce indentation when that's what would happen should tabs ...
How to leave a message for a github.com user
...ut the author of the change or the one who accepted it.
Provided you're really dying to exchange with user user_test
Display the public activity page of the user: https://github.com/user_test?tab=activity
Search for an event stating "user_test pushed to [branch] at [repository]". There are usuall...
How to move an iFrame in the DOM without losing its state?
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Well, actually, I really don't care if it reloads or not, since their locations are about:blank, but what I do care about is losing the contents inside the frame.
– JCOC611
Nov 29 '11 at 22:15
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Linux command (like cat) to read a specified quantity of characters
...tes=[-]N
print the first N bytes of each file; with the leading '-', print all but the last N bytes of each file
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Prevent Default on Form Submit jQuery
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I believe that the above answers is all correct, but that doesn't point out why the submit method doesn't work.
Well, the submit method will not work if jQuery can't get the form element, and jQuery doesn't give any error about that. If your script is placed i...
How to disable Crashlytics during development
...orting from the Crashlytics web dashboard for the debug version.
Wrap the call to Crashlytics.start() in an if statement that checks a debug flag. You could use either a custom flag or an approach like the ones proposed here: How to check if APK is signed or "debug build"?
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Programmatically create a UIView with color gradient
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Objective-C:
UIView *view = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 320, 50)];
CAGradientLayer *gradient = [CAGradientLayer layer];
gradient.frame = view.bounds;
gradient.colors = @[(id)[UIColor whiteColor].CGColor, (id)[UIColor blackColor].CGColor];
[v...
Fastest way to find second (third…) highest/lowest value in vector or column
R offers max and min, but I do not see a really fast way to find another value in the order, apart from sorting the whole vector and then picking a value x from this vector.
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Warning :-Presenting view controllers on detached view controllers is discouraged
... in your modal view controller, when everything is finished, you can just call :
[self dismissViewControllerAnimated:YES completion:nil];
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