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Extract a number from a string (JavaScript)
I have a string in JavaScript like #box2 and I just want the 2 from it.
21 Answers
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File content into unix variable with newlines
...anscript for a demo:
pax> cat num1.txt ; x=$(cat num1.txt)
line 1
line 2
pax> echo $x ; echo '===' ; echo "$x"
line 1 line 2
===
line 1
line 2
The reason why newlines are replaced with spaces is not entirely to do with the echo command, rather it's a combination of things.
When given a ...
How is the fork/join framework better than a thread pool?
...ing 655. Could you please work on number 673 to 1000, I'll do the 346 to 672." B says "OK, let's start so we can go to the pub earlier."
You see - the workers must communicate between each other even when they started the real work. This is the missing part in the examples.
The examples on the oth...
How to replace multiple white spaces with one white space
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edited Feb 2 '12 at 23:41
Frank van Puffelen
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Can someone explain __all__ in Python?
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answered Sep 4 '08 at 21:30
JimmyJimmy
77.8k1616 gold badges113113 silver badges135135 bronze badges
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Static constant string (class member)
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edited Nov 20 '19 at 15:54
answered Oct 14 '09 at 2:03
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How to plot two histograms together in R?
...data and combine them.
carrots <- data.frame(length = rnorm(100000, 6, 2))
cukes <- data.frame(length = rnorm(50000, 7, 2.5))
# Now, combine your two dataframes into one.
# First make a new column in each that will be
# a variable to identify where they came from later.
carrots$veg <- ...
php execute a background process
...Linux machine, I've always handled it like this:
exec(sprintf("%s > %s 2>&1 & echo $! >> %s", $cmd, $outputfile, $pidfile));
This launches the command $cmd, redirects the command output to $outputfile, and writes the process id to $pidfile.
That lets you easily monitor what t...
How can we make xkcd style graphs?
...cd style graphs in Mathematica and in LaTeX . Can we do it in R? Ggplot2-ers? A geom_xkcd and/or theme_xkcd?
7 Answers
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'git add --patch' to include new files?
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edited Aug 22 '17 at 19:53
answered Aug 11 '17 at 17:44
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