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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...
Programmer Puzzle: Encoding a chess board state throughout a game
...nly specifies the minimal information necessary. Consider this opening:
e4 e5
Nf3 Nc6
…
which translates to:
White moves king’s pawn from e2 to e4 (it is the only piece that can get to e4 hence “e4”);
Black moves the king’s pawn from e7 to e5;
White moves the knight (N) to f3;
Black ...
How to determine whether a given Linux is 32 bit or 64 bit?
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Try uname -m. Which is short of uname --machine and it outputs:
x86_64 ==> 64-bit kernel
i686 ==> 32-bit kernel
Otherwise, not for the Linux kernel, but for the CPU, you type:
cat /proc/cpuinfo
or:
grep flags /proc/cpuinfo
Under "flags" parameter, you will see various values:...
How to iterate over arguments in a Bash script
...nts are broken up properly if there are spaces in them:
sh test.sh 1 2 '3 4'
1
2
3 4
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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...
Square retrofit server mock for testing
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104
Mock Retrofit 2.0 Requests for Testing
As the old mechanisms like creating MockClient class and...
Django development IDE [closed]
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answered Oct 6 '08 at 16:48
Sam CorderSam Corder
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How to update attributes without validation
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edited Jan 10 at 5:42
Nathan
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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...