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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...
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 "#...
How to convert DateTime to VarChar
...nyOssaTonyOssa
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How do I check for C++11 support?
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edited Jul 4 '15 at 19:24
Iharob Al Asimi
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Unable to load DLL (Module could not be found HRESULT: 0x8007007E)
I have dll library with unmanaged C++ API code I need to use in my .NET 4.0 application. But every method i try to load my dll i get an error:
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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...
Integer division with remainder in JavaScript?
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The integral part of -4.5 in mathematics is -5, as -5 is the "highest possible integral number that is still lower than -4.5".
– Toughy
Dec 3 '14 at 13:40
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Php multiple delimiters in explode
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answered Feb 10 '11 at 9:45
SergeSSergeS
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How do I parse an ISO 8601-formatted date?
I need to parse RFC 3339 strings like "2008-09-03T20:56:35.450686Z" into Python's datetime type.
27 Answers
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How can I hide an HTML table row so that it takes up no space?
... CalvinCalvin
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