大约有 43,000 项符合查询结果(耗时:0.0801秒) [XML]

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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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Bash script to calculate time elapsed

...a script in bash to calculate the time elapsed for the execution of my commands, consider: 10 Answers ...
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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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puts vs logger in rails rake tasks

In a rake task if I use puts command then I see the output on console. However I will not see that message in log file when app is deployed on production. ...
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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 do I rename all files to lowercase?

... If you're comfortable with the terminal: Open Terminal.app, type cd and then drag and drop the Folder containing the files to be renamed into the window. To confirm you're in the correct directory, type ls and hit enter. Paste this code and hit enter: for f in *; do mv "$f" "$f.tmp"; mv "$f....
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CMake: How to build external projects and include their targets

...re. As you noted, the highly flexible ExternalProject module runs its commands at build time, so you can't make direct use of Project A's import file since it's only created once Project A has been installed. If you want to include Project A's import file, you'll have to install Project A manually...