大约有 43,000 项符合查询结果(耗时:0.0705秒) [XML]

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Can I set the height of a div based on a percentage-based width? [duplicate]

Let's say I've got a div that has a width of 50% of the body. How do I make its height equal to that value? So that when the browser window is 1000px wide, the div's height and width are both 500px. ...
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Cannot add or update a child row: a foreign key constraint fails

table 1 24 Answers 24 ...
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Link to “pin it” on pinterest without generating a button

I have a page with tens or hundreds of posts, each one with social buttons. I just can't generate all the buttons for each url: it is too slow (facebook, g+, twitter, pinterest... for hundreds of links). So, instead of the facebook share button to be generated on the fly, I use a simple img pointing...
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Fetch the row which has the Max value for a column

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How to pull a random record using Django's ORM?

I have a model that represents paintings I present on my site. On the main webpage I'd like to show some of them: newest, one that was not visited for most time, most popular one and a random one. ...
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What is normalized UTF-8 all about?

The ICU project (which also now has a PHP library ) contains the classes needed to help normalize UTF-8 strings to make it easier to compare values when searching. ...
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Do the JSON keys have to be surrounded by quotes?

Example: Is the following code valid against the JSON Spec ? 6 Answers 6 ...
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How do I write a “tab” in Python?

Let's say I have a file. How do I write "hello" TAB "alex"? 6 Answers 6 ...
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RESTfully design /login or /register resources?

I was designing a web app and then stopped to think about how my api should be designed as a RESTful web service. For now, most of my URI's are generic and might apply to various web apps: ...
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Best way to pretty print a hash

I have a large hash with nested arrays and hashes. I would like to simply print it out so it 'readable' to the user. 12 An...