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What does !! mean in ruby?
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161
Not not. It's used to convert a value to a boolean:
!!nil #=> false
!!"abc" #=> true...
When should I use jQuery deferred's “then” method and when should I use the “pipe” method?
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Since jQuery 1.8 .then behaves the same as .pipe:
Deprecation Notice: As of jQuery 1.8, the d...
Remove file from the repository but keep it locally
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edited Jul 1 '18 at 3:03
answered Aug 12 '10 at 16:21
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How to create an infinite loop in Windows batch file?
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answered Mar 30 '11 at 14:14
thkalathkala
73.8k1919 gold badges141141 silver badges184184 bronze badges
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Set value to null in WPF binding
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I am using .NET 3.5 SP1 so it's very simple:
<TextBox Text="{Binding Price, TargetNullValue=''}"/>
Which stands for (thanks Gregor for your comment):
<TextBox Text="{Binding Price, TargetNullValue={x:Static sys:String.Empty}}"/>
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How persistent is localStorage?
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edited Jun 20 at 9:12
Community♦
111 silver badge
answered Mar 30 '12 at 19:33
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Add floating point value to android resources/values
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Pass Multiple Parameters to jQuery ajax call
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Drawable image on a canvas
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The good way to draw a Drawable on a canvas is not decoding it yourself but leaving it to the ...