大约有 44,000 项符合查询结果(耗时:0.0490秒) [XML]

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How to vertically center content with variable height within a div?

...o element: CSS-Tricks: Centering in the Unknown. It doesn’t require any extra markup and seems to work extremely well. I couldn’t use the display: table method because table elements don’t obey the max-height property. .block { height: 300px; text-align: center; background: #c0...
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Print in one line dynamically

...s about this that may be surprising: The \r goes at the beginning of the string so that, while the program is running, the cursor will always be after the number. This isn't just cosmetic: some terminal emulators get very confused if you do it the other way around. If you don't include the last l...
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Queue.Queue vs. collections.deque

... for high-speed inter-thread communication. In fact the heavy usage of an extra mutex and extra method ._get() etc. method calls in Queue.py is due to backwards compatibility constraints, past over-design and lack of care for providing an efficient solution for this important speed bottleneck issue...
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Should I always return IEnumerable instead of IList?

...ormation but once again, why would you throw away information? If you know extra information about something, pass it on. – Mel Oct 20 '11 at 12:13 ...
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Get the first item from an iterable that matches a condition

...for x in the_iterable if x > 3), default_value) Note that you need an extra pair of parentheses around the generator expression in this case − they are needed whenever the generator expression isn't the only argument. I see most answers resolutely ignore the next built-in and so I assume tha...
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List or IList [closed]

...interfaces really shine. Say I have a function that returns IEnumerable<string>, inside the function I may use a List<string> for an internal backing store to generate my collection, but I only want callers to enumerate it's contents, not add or remove. Accepting an interface as a parame...
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How to copy a row and insert in same table with a autoincrement field in MySQL?

...INFORMATION_SCHEMA ... I wonder if you could do it as a sub-query and some string functions? Hmmm... – Yzmir Ramirez Feb 6 '12 at 6:35 1 ...
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Best way to create custom config options for my Rails app?

...th_indifferent_access" allows you to access the values in the hash using a string key or with an equivalent symbol key. eg. APP_CONFIG['audiocast_uri_format'] => 'http://blablalba/blabbitybla/yadda' APP_CONFIG[:audiocast_uri_format] => 'http://blablalba/blabbitybla/yadda' Purely a convenie...
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How to preventDefault on anchor tags?

...gs (<a></a>) to see if their href attribute is either an empty string ("") or a hash ('#') or there is an ng-click assignment. If it finds any of these conditions, it catches the event and prevents the default behavior. The only down side is that it runs this directive for all anchor t...
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unit testing of private functions with mocha and node.js

... I have added an extra function that I name Internal() and return all private functions from there. This Internal() function is then exported. Example: function Internal () { return { Private_Function1, Private_Function2, Private_Function2...