大约有 47,000 项符合查询结果(耗时:0.0749秒) [XML]

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Fixed position but relative to container

...on. It is now possible to center content of an dynamic size (horizontally and vertically) with the help of the magic of CSS3 transform. The same principle applies, but instead of using margin to offset your container, you can use translateX(-50%). This doesn't work with the above margin trick bec...
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Is Dvorak typing appropriate for programming? [closed]

I'm always looking for ways to be more productive, and I've been reading a lot about typing using a Dvorak keyboard. 12 A...
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Javascript - removing undefined fields from an object [duplicate]

... A one-liner using ES6 arrow function and ternary operator: Object.keys(obj).forEach(key => obj[key] === undefined ? delete obj[key] : {}); Or use short-circuit evaluation instead of ternary: (@Matt Langlois, thanks for the info!) Object.keys(obj).forEach(...
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I lose my data when the container exits

Despite Docker's Interactive tutorial and faq I lose my data when the container exits. 11 Answers ...
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jQuery callback for multiple ajax calls

...hree ajax calls in a click event. Each ajax call does a distinct operation and returns back data that is needed for a final callback. The calls themselves are not dependent on one another, they can all go at the same time, however I would like to have a final callback when all three are complete. ...
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How can I strip all punctuation from a string in JavaScript using regex?

...ly a quantifier to the preceding, so in this case it's replacing between 2 and 100 whitespace characters (\s) with a single space. If you want to collapse any number of whitespace characters down to one, you would leave off the upper limit like so: replace(/\s{2,}/g, ' '). – Mi...
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How can I access “static” class variables within class methods in Python?

...e self.bar or Foo.bar. Assigning to Foo.bar will create a static variable, and assigning to self.bar will create an instance variable. share | improve this answer | follow ...
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Best practices for Storyboard login screen, handling clearing of data upon logout

...controller is a Tab Bar Controller. I'm creating the login/logout process, and it's mostly working fine, but I've got a few issues. I need to know the BEST way to set all this up. ...
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get NSDate today, yesterday, this Week, last Week, this Month, last Month… variables

... Adapted from the Date and Time Programming Guide: // Right now, you can remove the seconds into the day if you want NSDate *today = [NSDate date]; // All intervals taken from Google NSDate *yesterday = [today dateByAddingTimeInterval: -86400.0];...
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How do 20 questions AI algorithms work?

...nstead of taking into account all questions which have been answered, you randomly pick a smaller subset, which is enough to give you a single answer. Now you repeat that a few times with different random subset of questions, till you see that most of the time, you are getting the same result. you t...