大约有 42,000 项符合查询结果(耗时:0.0709秒) [XML]

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“The run destination iOS Device is not valid for running the scheme”

... It was a bug in XCode, I closed and reopened Xcode and it started working. I've noticed this sort of thing many many times now with Xcode with other problems, its very frustrating that the tool is so dodgy. ...
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In Matlab, when is it optimal to use bsxfun?

...ng Using bsxfun, like using accumarray, makes me feel good about my understanding of Matlab. bsxfun will replicate the input arrays along their "singleton dimensions", i.e. the dimensions along which the size of the array is 1, so that they match the size of the corresponding dimension of the othe...
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Why seal a class?

...ealing a class? I cannot fathom how not allowing inheritance can be useful and most likely not the only one fighting these classes. ...
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Handling Touch Event in UILabel and hooking it up to an IBAction

...rner try the tag property. make sure to use labelTap: instead of labelTap. and use - (void) labelTap:(id)sender;. – thedjaney Jul 28 '14 at 9:43 1 ...
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Why does HTML think “chucknorris” is a color?

How come certain random strings produce colors when entered as background colors in HTML? For example: 9 Answers ...
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Remove new lines from string and replace with one empty space

... $string = trim(preg_replace('/\s\s+/', ' ', $string)); Multiple spaces and newlines are replaced with a single space. Edit: As others have pointed out, this solution has issues matching single newlines in between words. This is not present in the example, but one can easily see how that situati...
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Cannot make a static reference to the non-static method

...etText() is non-static you cannot call it from a static method. To understand why, you have to understand the difference between the two. Instance (non-static) methods work on objects that are of a particular type (the class). These are created with the new like this: SomeClass myObject = new Som...
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How do I define a method which takes a lambda as a parameter in Java 8?

In Java 8, methods can be created as Lambda expressions and can be passed by reference (with a little work under the hood). There are plenty of examples online with lambdas being created and used with methods, but no examples of how to make a method taking a lambda as a parameter. What is the syntax...
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Confusion: @NotNull vs. @Column(nullable = false) with JPA and Hibernate

...tation of JSR 303, however, it intelligently picks up on these constraints and translates them into database constraints for you, so you get two for the price of one. @Column(nullable = false) is the JPA way of declaring a column to be not-null. I.e. the former is intended for validation and the lat...
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How to customize an end time for a YouTube video?

... to return a Flash/SWF stream... Which works fine for me on Chrome/Windows and IE, but not on Firefox. – Kai Carver Sep 16 '14 at 11:03 3 ...