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What is the $? (dollar question mark) variable in shell scripting? [duplicate]
...al Parameters" http://pubs.opengroup.org/onlinepubs/9699919799/utilities/V3_chap02.html#tag_18_05_02 :
? Expands to the decimal exit status of the most recent pipeline (see Pipelines).
man bash "Special Parameters":
The shell treats several parameters specially. These parameters may only be refe...
How to create standard Borderless buttons (like in the design guideline mentioned)?
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Finding out whether a string is numeric or not
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answered Feb 16 '16 at 7:19
AechoLiuAechoLiu
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How to convert a char to a String?
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sactiwsactiw
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What does “WARN Could not determine content-length of response body.” mean and how to I get rid of i
...ove.)
– fearless_fool
Dec 26 '11 at 19:33
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How do I declare a global variable in VBA?
...ared as public.
– kapilddit
Nov 13 '19 at 12:25
Above the first Function/Sub, not just outside: "Module-level variable...
How to test if a string is basically an integer in quotes using Ruby
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edited Jul 14 '19 at 23:01
the Tin Man
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check if jquery has been loaded, then load it if false
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answered Dec 1 '09 at 19:20
Daniel LeCheminantDaniel LeCheminant
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Get all unique values in a JavaScript array (remove duplicates)
...pt/Reference/…
– Lukas Liesis
Nov 19 '16 at 15:07
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For a much more detailed answer, including ...