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What underlies this JavaScript idiom: var self = this?
...his even as the context is changing. It's a technique often used in event handlers (especially in closures).
Edit: Note that using self is now discouraged as window.self exists and has the potential to cause errors if you are not careful.
What you call the variable doesn't particularly matter. va...
iOS app, programmatically get build version
...le.mainBundle().infoDictionary?["CFBundleShortVersionString"] as! String
and the "Build":
Swift 3
let build = Bundle.main.infoDictionary?[kCFBundleVersionKey as String] as? String
ObjC
NSString *build = [[[NSBundle mainBundle] infoDictionary] objectForKey:(NSString *)kCFBundleVersionKey];
S...
What is the best way to clear a session variable in rails?
...will leave the :message key in the session hash, this will destroy the key and value, as if your session never had any value assigned to that key.
– Brett Bender
Oct 22 '10 at 17:22
...
ggplot: How to increase spacing between faceted plots?
I have several faceted histograms (obtained with the command below) which are nicely plotted one under the other. I would like to increase the spacing between them, however, they are tight.
...
Python: Is it bad form to raise exceptions within __init__?
...e's no other good way to indicate an error condition within a constructor, and there are many hundreds of examples in the standard library where building an object can raise an exception.
The error class to raise, of course, is up to you. ValueError is best if the constructor was passed an invalid ...
Why is the C++ STL is so heavily based on templates? (and not on *interfaces*)
I mean, aside from its obligating name (the Standard Template Library)...
13 Answers
1...
Limit number of characters allowed in form input text field
...umberKey(event)" />
However, this may or may not be affected by your handler. You may need to use or add another handler function to test for length, as well.
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Xcode 5 - “iOS Simulator failed to install application” every time I switch simulators
...t of an application from
iOS 7.0 to a release prior to iOS 7.0, building and running the
application may fail with the message “iOS Simulator failed to install
the application.”
Go to the iOS home screen, click and hold the application icon, then tap the hovering “X” button to ...
Best way to turn an integer into a month name in c#?
...o turn 1 into January, I need to new up a date time with an arbitrary year and day, in order to just get January?
– DevelopingChris
Oct 20 '08 at 15:56
1
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How can I tell which homebrew formulae are upgradable?
...found that the answer is:
brew outdated
brew help does not list the command, but it is documented in man brew.
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