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Ruby, Difference between exec, system and %x() or Backticks
... argument to this method. For example:
>> system("date")
Wed Sep 4 22:03:44 CEST 2013
=> true
The invoked program will use the current STDIN, STDOUT and STDERR objects of your Ruby program. In fact, the actual return value is either true, false or nil. In the example the date was printe...
Get String in YYYYMMDD format from JS date object?
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o-oo-o
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Is “inline” without “static” or “extern” ever useful in C99?
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answered Jun 10 '11 at 22:48
NemoNemo
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rotating axis labels in R
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doncherry
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answered Dec 1 '09 at 20:56
ShaneShane
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How to convert “camelCase” to “Camel Case”?
...mp; got an error.
– strongriley
Aug 22 '11 at 22:06
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Also adding: if you have an all caps acrony...
What is the ellipsis (…) for in this method signature?
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answered Mar 2 '10 at 22:38
FrustratedWithFormsDesignerFrustratedWithFormsDesigner
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Formula to determine brightness of RGB color
...Luminance (standard for certain colour spaces): (0.2126*R + 0.7152*G + 0.0722*B) [1]
Luminance (perceived option 1): (0.299*R + 0.587*G + 0.114*B) [2]
Luminance (perceived option 2, slower to calculate): sqrt( 0.241*R^2 + 0.691*G^2 + 0.068*B^2 ) → sqrt( 0.299*R^2 + 0.587*G^2 + 0.114*B^2 ) (thanks...
Changing the color of an hr element
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edited Dec 28 '18 at 13:22
Uwe Keim
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How to save a BufferedImage as a File
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The answer lies within the Java Documentation's Tutorial for Writing/Saving an Image.
The Image...
Force HTML5 youtube video
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VacilandoVacilando
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