大约有 41,000 项符合查询结果（耗时：0.0634秒） [XML]
Display number with leading zeros
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Jack M.Jack M.
22.9k66 gold badges4747 silver badges6363 bronze badges
9
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Fastest way to replace NAs in a large data.table
...m.time(a_gdata = f_gdata(dt1))
user system elapsed
18.805 12.301 134.985
system.time(a_andrie = f_andrie(dt1))
Error: cannot allocate vector of size 305.2 Mb
Timing stopped at: 14.541 7.764 68.285
system.time(f_dowle(dt1))
user system elapsed
7.452 4.144 19.590 # EDIT has fas...
Replace tabs with spaces in vim
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D.ShawleyD.Shawley
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Flex-box: Align last row to grid
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447
Add a ::after which autofills the space. No need to pollute your HTML. Here is a codepen showi...
JPA eager fetch does not join
...ted Mar 21 '17 at 10:06
john16384
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answered Jun 18 '12 at 4:48
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Get and Set a Single Cookie with Node.js HTTP Server
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14 Answers
14
Active
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How to install python modules without root access?
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edited Oct 17 '16 at 19:49
answered Sep 19 '11 at 1:04
ti...
Is there a real solution to debug cordova apps [closed]
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140
FOR ANDROID:
You only need to enable “USB remote debugger” within your android device and ...
Meaning of = delete after function declaration
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Prasoon SauravPrasoon Saurav
83.1k4242 gold badges229229 silver badges336336 bronze badges
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RGB to hex and hex to RGB
... @cwolves:
function rgbToHex(r, g, b) {
return "#" + ((1 << 24) + (r << 16) + (g << 8) + b).toString(16).slice(1);
}
alert(rgbToHex(0, 51, 255)); // #0033ff
Update 3 December 2012
Here's a version of hexToRgb() that also parses a shorthand hex triplet such as "#...