大约有 40,000 项符合查询结果(耗时:0.0626秒) [XML]

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find vs find_by vs where

... 104 Use whichever one you feel suits your needs best. The find method is usually used to retrieve ...
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Get Base64 encode file-data from Input Form

... +50 It's entirely possible in browser-side javascript. The easy way: The readAsDataURL() method might already encode it as base64 for yo...
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Is it possible to have multiple styles inside a TextView?

... answered Oct 7 '09 at 18:58 LegendLegend 101k106106 gold badges249249 silver badges379379 bronze badges ...
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How accurately should I store latitude and longitude?

...tor decimal degrees distance places ------------------------------- 0 1.0 111 km 1 0.1 11.1 km 2 0.01 1.11 km 3 0.001 111 m 4 0.0001 11.1 m 5 0.00001 1.11 m 6 0.000001 0.111 m 7 0.0000001 1.11 cm 8 ...
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What does the JSLint error 'body of a for in should be wrapped in an if statement' mean?

... a for in loop to enumerate over an array. Never. Use good old for(var i = 0; i<arr.length; i++). The reason behind this is the following: each object in JavaScript has a special field called prototype. Everything you add to that field is going to be accessible on every object of that type. Supp...
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Is there a way to measure how sorted a list is?

...onsider the example sequence 9, 5, 7, 6. This sequence has the inversions (0,1), (0,2), (0,3), (2,3) and the inversion number 4. If you want a value between 0 and 1, you can divide the inversion number by N choose 2. To actually create an algorithm to compute this score for how sorted a list is, you...
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.net implementation of bcrypt

... answered May 16 '09 at 22:02 ineine 13.5k88 gold badges5050 silver badges7878 bronze badges ...
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How do I Convert DateTime.now to UTC in Ruby?

...DateTime and not Time? Time should include everything you need: irb(main):016:0> Time.now => Thu Apr 16 12:40:44 +0100 2009 share | improve this answer | follow ...
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Is there a JavaScript strcmp()?

... answered Jul 24 '09 at 18:38 newacctnewacct 106k2626 gold badges143143 silver badges214214 bronze badges ...
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Responsive iframe using Bootstrap

... answered Aug 10 '14 at 20:52 ChristinaChristina 31.5k1717 gold badges7474 silver badges117117 bronze badges ...