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answered Dec 2 '10 at 0:40
Fake Code Monkey RashidFake Code Monkey Rashid
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Getting output of system() calls in Ruby
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answered Oct 14 '09 at 0:06
Craig WalkerCraig Walker
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PHP - Modify current object in foreach loop
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207
There are 2 ways of doing this
foreach($questions as $key => $question){
$questions[$ke...
Is XML case-sensitive?
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answered Sep 14 '11 at 10:27
Jon EgertonJon Egerton
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Greenlet Vs. Threads
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208
Greenlets provide concurrency but not parallelism. Concurrency is when code can run independent...
How to replace a character with a newline in Emacs?
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answered Mar 4 '09 at 23:52
Jonathan ArkellJonathan Arkell
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How to include external Python code to use in other files?
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edited May 30 '19 at 20:42
nelsonda
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answered Apr 3 '...
Where is shared_ptr?
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edited Mar 9 '12 at 3:01
answered May 27 '10 at 3:09
Ja...
How do I test if a variable is a number in Bash?
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One approach is to use a regular expression, like so:
re='^[0-9]+$'
if ! [[ $yournumber =~ $re ]] ; then
echo "error: Not a number" >&2; exit 1
fi
If the value is not necessarily an integer, consider amending the regex appropriately; for instance:
^[0-9]+([.][0-9]+)?$
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