大约有 41,000 项符合查询结果(耗时:0.0553秒) [XML]

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How to identify CAAnimation within the animationDidStop delegate?

I had a problem where I had a series of overlapping CATransition / CAAnimation sequences, all of which I needed to perform custom operations when the animations stopped, but I only wanted one delegate handler for animationDidStop. ...
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JavaScript isset() equivalent

In PHP you can do if(isset($array['foo'])) { ... } . In JavaScript you often use if(array.foo) { ... } to do the same, but this is not exactly the same statement. The condition will also evaluate to false if array.foo does exists but is false or 0 (and probably other values as well). ...
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How can I split a JavaScript string by white space or comma?

If I try 6 Answers 6 ...
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Is it safe to parse a /proc/ file?

I want to parse /proc/net/tcp/ , but is it safe? 7 Answers 7 ...
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Comparing Java enum members: == or equals()?

I know that Java enums are compiled to classes with private constructors and a bunch of public static members. When comparing two members of a given enum, I've always used .equals() , e.g. ...
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How do I make a placeholder for a 'select' box?

I'm using placeholders for text inputs which is working out just fine. But I'd like to use a placeholder for my selectboxes as well. Of course I can just use this code: ...
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Cron jobs and random times, within given hours

I need the ability to run a PHP script 20 times a day at completely random times. I also want it to run only between 9am - 11pm. ...
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rails + MySQL on OSX: Library not loaded: libmysqlclient.18.dylib

I'm just starting out with Ruby (and rails). I did the setup according to http://ruby.railstutorial.org/ruby-on-rails-tutorial-book#sec:ruby gems, using rvm . I have everything working well with sqlite. ...
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How do I download a binary file over HTTP?

How do I download and save a binary file over HTTP using Ruby? 9 Answers 9 ...
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Run PHP Task Asynchronously

I work on a somewhat large web application, and the backend is mostly in PHP. There are several places in the code where I need to complete some task, but I don't want to make the user wait for the result. For example, when creating a new account, I need to send them a welcome email. But when they h...