大约有 44,000 项符合查询结果(耗时:0.0583秒) [XML]

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How to get an element's top position relative to the browser's viewport?

... The existing answers are now outdated. The native getBoundingClientRect() method has been around for quite a while now, and does exactly what the question asks for. Plus it is supported across all browsers (including IE 5, it seems!) From MDN page: ...
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generate model using user:references vs user_id:integer

... how does rails know that user_id is a foreign key referencing user? Rails itself does not know that user_id is a foreign key referencing user. In the first command rails generate model Micropost user_id:integer it only adds a column user_i...
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How do I control how Emacs makes backup files?

...kup-by-copying-when-linked. Since your backups are all in their own place now, you might want more of them, rather than less of them. Have a look at the Emacs documentation for these variables (with C-h v). (setq delete-old-versions t kept-new-versions 6 kept-old-versions 2 version-control ...
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Duplicating a MySQL table, indices, and data

... work for big tables (millions of records)?.. I am asking because I don't know how this select * will perform in huge tables. – fguillen Dec 1 '16 at 17:23 4 ...
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How to get a random value from dictionary in python

...DIT: The question was changed a couple years after the original post, and now asks for a pair, rather than a single item. The final line should now be: country, capital = random.choice(list(d.items())) share | ...
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Animate change of view controllers without using navigation controller stack, subviews or modal cont

... I know the appear calls are being done because I logged them. I also don't see why this would affect orientation changes. Can you elaborate why you think it would? – TigerCoding Nov 26 '1...
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Bootstrap: How do I identify the Bootstrap version?

I want to update Bootstrap on a site, but I don't know the installed version. 11 Answers ...
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How do I overload the square-bracket operator in C#?

... +1 for the handy list. FYI the link died. (4 years later, I know) – Mixxiphoid Mar 4 '13 at 21:04 I'd li...
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Check if an element is present in an array [duplicate]

The function I am using now to check this is the following: 9 Answers 9 ...
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How to trigger event in JavaScript?

... This answer is more actual now. One thing to add: if there should be a know-typed event (like TransitionEvent, ClipboardEvent, etc) the appropriate constructor could be called. – Kiril Jul 1 '14 at 13:04 ...