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Is there a difference between single and double quotes in Java?
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And, of course, this behavior is borrowed from C (which probably got it somewhere else, I presume).
– JesperE
Jan 13 '09 at 16:01
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How to convert int to NSString?
... there may be slightly less overhead by avoiding the intermediate NSNumber from your code? @(myInt) is a boxed expression, it returns an NSNumber.
– Cœur
Apr 3 at 4:01
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Why does .NET foreach loop throw NullRefException when collection is null?
...und (ie: above) if you don't like this behavior. If the compiler hid this from you, you'd lose the error checking at runtime, but there'd be no way to "turn it off"...
– Reed Copsey
Jun 21 '10 at 20:43
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WPF TemplateBinding vs RelativeSource TemplatedParent
...abilities of the Binding class, for example you can't control Binding.Mode from TemplateBinding.
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Check if an image is loaded (no errors) with jQuery
... return imgElement.complete && imgElement.naturalHeight !== 0;
}
From the spec for the complete attribute:
The IDL attribute complete must return true if any of the following
conditions is true:
The src attribute is omitted.
The final task that is queued by the networking t...
How do I create a URL shortener?
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asides from the fact that A-Z, a-z and 0-9 = 62 chars, not 40, you are right on the mark.
– Evan Teran
Apr 12 '09 at 16:39
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How to wait for a keypress in R?
...run until you've pressed the button in the app (button that stops the apps from inside using stopApp).
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Handling the window closing event with WPF / MVVM Light Toolkit
...hind" mantra is not the goal in itself, the point is to decouple ViewModel from the View. Even when the event is bound in code-behind of the View, the ViewModel does not depend on the View and the closing logic can be unit-tested.
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Ruby Metaprogramming: dynamic instance variable names
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You can also use send which prevents the user from setting non-existent instance variables:
def initialize(hash)
hash.each { |key, value| send("#{key}=", value) }
end
Use send when in your class there is a setter like attr_accessor for your instance variables:
clas...
`elif` in list comprehension conditionals
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You can use list comprehension is you are going to create another list from original.
>>> l = [1, 2, 3, 4, 5]
>>> result_map = {1: 'yes', 2: 'no'}
>>> [result_map[x] if x in result_map else 'idle' for x in l]
['yes', 'no', 'idle', 'idle', 'idle']
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