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Ruby, Difference between exec, system and %x() or Backticks
...ackticks style. It will return the output, too. Like its relatives %w and %q (among others), any delimiter will suffice as long as bracket-style delimiters match. This means %x(date), %x{date} and %x-date- are all synonyms. Like backticks %x can make use of string interpolation.
exec
By using Kern...
Checking Bash exit status of several commands efficiently
...ments have spaces in them; use "$@" instead. Similarly, put $1 inside the quotes in the echo command.
– Gordon Davisson
Mar 4 '11 at 16:01
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how to listen to N channels? (dynamic select statement)
...niform pseudo-random choice, and then executes that
case. It returns the index of the chosen case and, if that case was a
receive operation, the value received and a boolean indicating whether
the value corresponds to a send on the channel (as opposed to a zero
value received because the cha...
Ignoring an already checked-in directory's contents?
...ory.
The --cached option causes the files to only be removed from git's index, not your working copy. By default git rm <file> would delete <file>.
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Setting different color for each series in scatter plot on matplotlib
...it work also in that case but I couldn't find any solution so I edited the question and warned the other users. Thanks!
– G M
Jul 20 '18 at 15:00
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Javascript equivalent of Python's zip function
...ecialized goodies: function binding, javascript templating, creating quick indexes, deep equality testing, and so on.
– Say the people who made it
I recently started using it specifically for the zip() function and it has left a great first impression. I am using jQuery and CoffeeScript, and it ...
Test for non-zero length string in Bash: [ -n “$var” ] or [ “$var” ]
...[ (aka test) and [[.
The following table shows that whether a variable is quoted or not, whether you use single or double brackets and whether the variable contains only a space are the things that affect whether using a test with or without -n/-z is suitable for checking a variable.
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What is the IntelliJ shortcut key to create a javadoc comment?
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@RachelGallen Could assist with this stackoverflow.com/q/61094391/2810718
– user2810718
Apr 8 at 6:51
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Immutable array in Java
...xisting elements with List<> aslist = Arrays.asList(...); aslist.set(index, element), so java.util.Arrays.ArrayList certainly is not unmofiable, Q.E.D. Added the comment just for the sake of emphasizing the difference between the result of asList and normal ArrayList
– N...
How does this site infecting script work?
...t's a very simple script that injects a hidden IFRAME containing the path /index.php?ys from the same domain.
I requested that page in Fiddler, and it had no content.
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