大约有 20,000 项符合查询结果(耗时:0.0293秒) [XML]

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Ruby: extend self

In Ruby, I understand the basic idea of extend . However, what's happening in this segment of code? Specifically, what does extend do? Is it just a convenient way of making the instance methods into class methods? Why would you do it this way rather than specifying class methods from the beginnin...
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How can I get the current language in Django?

How can I get the current language in the current thread in a model or in the admin? 6 Answers ...
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Read input from console in Ruby?

I want to write a simple A+B program in ruby, but I have no idea how to work with the console. 5 Answers ...
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How can I change Eclipse theme?

... Take a look at rogerdudler/eclipse-ui-themes . In the readme there is a link to a file that you need to extract into your eclipse/dropins folder. When you have done that go to Window -> Preferences -> General -> Appearance And c...
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Is there a “not in” operator in JavaScript for checking object properties?

...ator in JavaScript to check if a property does not exist in an object? I couldn’t find anything about this around Google or Stack Overflow. Here’s a small snippet of code I’m working on where I need this kind of functionality: ...
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Is it possible to set private property via reflection?

... t.GetProperty("CreatedOn") .SetValue(obj, new DateTime(2009, 10, 14), null); EDIT: Since the property itself is public, you apparently don't need to use BindingFlags.NonPublic to find it. Calling SetValue despite the the setter having less accessibility st...
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jquery $(window).width() and $(window).height() return different values when viewport has not been r

I am writing a site using jquery that repeatedly calls $(window).width() and $(window).height() to position and size elements based on the viewport size. ...
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When should I use ugettext_lazy?

I have a question about using ugettext and ugettext_lazy for translations. I learned that in models I should use ugettext_lazy , while in views ugettext. But are there any other places, where I should use ugettext_lazy too? What about form definitions? Are there any performance diffrences betwe...
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Regular expression search replace in Sublime Text 2

I'm looking to do search replace with regular expressions in Sublime Text 2. The documentation on this is rather anemic. Specifically, I want to do a replace on groups, so something like converting this text: ...
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Correct use of flush() in JPA/Hibernate

I was gathering information about the flush() method, but I'm not quite clear when to use it and how to use it correctly. From what I read, my understanding is that the contents of the persistence context will be synchronized with the database, i. e. issuing outstanding statements or refreshing enti...