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Unique ways to use the Null Coalescing operator [closed]

...he function close in cache. On the other hand: en.wikipedia.org/wiki/Global_value_numbering – TinyTimZamboni Feb 17 '16 at 18:24  |  show 1 mo...
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autolayout - make height of view relative to half superview height

...youtConstraint constraintsWithVisualFormat:@"V:[topLayoutGuide]-0-[_view1]-0-[_view2(==_view1)]-0-[bottomLayoutGuide]" options:0 metrics:nil views:viewsDict]]; ...
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Why can't code inside unit tests find bundle resources?

... Library/ Developer/ CoreSimulator/ Devices/ _UUID_/ data/ Containers/ Bundle/ Application/ _UUID_/ App.app/ Also note the unit test executable is, by default, linked ...
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Reference: mod_rewrite, URL rewriting and “pretty links” explained

... links" is an often requested topic, but it is rarely fully explained. mod_rewrite is one way to make "pretty links", but it's complex and its syntax is very terse, hard to grok, and the documentation assumes a certain level of proficiency in HTTP. Can someone explain in simple terms how "pretty l...
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Conditional HTML Attributes using Razor MVC3

...zor attributes with other text? I need to make the following: ... id="track_@track.ID". I've expected something like ...id="track_2", but it generated the following output: ...id="track_@track.ID"... – Laserson Jan 15 '12 at 17:57 ...
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jQuery UI Sortable, then write order into a database

...elements' positions accordingly. For example, in PHP: $i = 0; foreach ($_POST['item'] as $value) { // Execute statement: // UPDATE [Table] SET [Position] = $i WHERE [EntityId] = $value $i++; } Example on jsFiddle. ...
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What is a “context bound” in Scala?

... Iterable[T]) = xs zip ys map { t => implicitly[Numeric[T]].times(t._1, t._2) } or def **[T : Numeric](xs: Iterable[T], ys: Iterable[T]) = xs zip ys map { t => context[T]().times(t._1, t._2) } share ...
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Set the maximum character length of a UITextField

...th] - range.length; return newLength <= 25; } Swift func textField(_ textField: UITextField, shouldChangeCharactersIn range: NSRange, replacementString string: String) -> Bool { let currentCharacterCount = textField.text?.count ?? 0 if range.length + range.location > curre...
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what is the difference between 'transform' and 'fit_transform' in sklearn

In the sklearn-python toolbox, there are two functions transform and fit_transform about sklearn.decomposition.RandomizedPCA . The description of two functions are as follows ...
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How do I write the 'cd' command in a makefile?

... It is actually executing the command, changing the directory to some_directory, however, this is performed in a sub-process shell, and affects neither make nor the shell you're working from. If you're looking to perform more tasks within some_directory, you need to add a semi-colon and appen...