大约有 9,159 项符合查询结果(耗时:0.0258秒) [XML]

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JavaScript, elegant way to check nested object properties for null/undefined [duplicate]

...that i have an object e.g. user = {} and through the course of using the app this gets populated. Let's say somwhere, after an AJAX call or something i do this: ...
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Adding hours to JavaScript Date object?

... where do you usually put this code? at the start of the app? – Mon Jul 16 at 19:18 add a comment  |  ...
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How to add new elements to an array?

...-defining the object size allows the compiler to optimize memory. For some applications, it matters. A small app running on a modern computer can probably get away with a lot of Lists before memory becomes a problem. – DraxDomax Dec 12 '19 at 12:33 ...
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How to set background color of an Activity to white programmatically?

... agreed. this changes the colour of the window before the root layout is applied, the accepted answer changes the colour of the root element in the activity's layout – LairdPleng Oct 2 '13 at 1:46 ...
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How to remove padding around buttons in Android?

In my Android app, I have this layout: 17 Answers 17 ...
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Cannot use identity column key generation with ( TABLE_PER_CLASS )

...th MySql only or its regular as I watch one of a video for Table per class approach and it was working fine in that postgres was used – Prashant Jan 22 '14 at 5:47 1 ...
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how to get last insert id after insert query in codeigniter active record

... 'name' => $data['name'], 'hash' => app_generate_hash(), 'url' => $data['url'], 'datecreated' => date('Y-m-d H:i:s'), 'active' => $data['active'] ]); ...
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Ruby on Rails and Rake problems: uninitialized constant Rake::DSL

...... It was solved by adding the following to the Rake file. module ::YourApplicationName class Application include Rake::DSL end end I ommited the module ::RakeFileUtils extend Rake::FileUtilsExtend option sugested by @databyte. It means that the Rake gem 0.9.2 works fine! ...
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UIView Hide/Show with animation

...ous Solution Michail's solution will work, but it's not actually the best approach. The problem with alpha fading is that sometimes the different overlapping view layers look weird as they fade out. There are some other alternatives using Core Animation. First include the QuartzCore framework in y...
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Where is PHP.ini in Mac OS X Lion? Thought it was in /usr/local/php5/lib

... To locate the ini file on your machine, open Terminal.app and run the following command: php --ini If you need a template for Lion, try this. share | improve this answer ...