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How to do a logical OR operation in shell scripting
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edited Apr 26 '18 at 10:40
JohannesM
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answered Nov 6 '10 at 2:03
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Remove empty lines in text using Visual Studio
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edited Mar 1 '17 at 10:41
Oliver
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answered Dec...
Stripping out non-numeric characters in string
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241
There are many ways, but this should do (don't know how it performs with really large strings t...
C: What is the difference between ++i and i++?
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1142
++i will increment the value of i, and then return the incremented value.
i = 1;
j = ++i;
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Convert a bitmap into a byte array
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430
There are a couple ways.
ImageConverter
public static byte[] ImageToByte(Image img)
{
Im...
SSL Error When installing rubygems, Unable to pull data from 'https://rubygems.org/
...ng to do the Michael Hartl tutorial. When I attempt to install rails 3.2.14 in my gemset, I get the following issue:
24 An...
Django development IDE [closed]
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answered Oct 6 '08 at 16:48
Sam CorderSam Corder
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Undefined reference to static class member
Can anyone explain why following code won't compile? At least on g++ 4.2.4.
7 Answers
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How to update attributes without validation
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edited Jan 10 at 5:42
Nathan
1,6762020 silver badges2929 bronze badges
answered Jun 8 '10 at 15:3...
Find the day of a week
...ric weekday (0-6 starting on Sunday).
as.POSIXlt(df$date)$wday
## [1] 3 3 4
which you could use to subset a character vector of weekday names
c("Sunday", "Monday", "Tuesday", "Wednesday", "Thursday",
"Friday", "Saturday")[as.POSIXlt(df$date)$wday + 1]
## [1] "Wednesday" "Wednesday" "Thursda...