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What is the difference between PS1 and PROMPT_COMMAND
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answered Jun 17 '10 at 1:38
Scott ThomsonScott Thomson
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How to show line number when executing bash script
...4='Line ${LINENO}: ' bash -x script
Line 1: foo=10
Line 2: echo 10
10
Line 3: echo 4
4
http://wiki.bash-hackers.org/scripting/debuggingtips gives the ultimate PS4 that would output everything you will possibly need for tracing:
export PS4='+(${BASH_SOURCE}:${LINENO}): ${FUNCNAME[0]:+${FUNCNAME[0]...
When correctly use Task.Run and when just async-await
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380
Note the guidelines for performing work on a UI thread, collected on my blog:
Don't block th...
String.replaceAll single backslashes with double backslashes
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edited Aug 13 '15 at 8:16
answered Nov 9 '09 at 15:45
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What is the meaning of the CascadeType.ALL for a @ManyToOne JPA association
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372
The meaning of CascadeType.ALL is that the persistence will propagate (cascade) all EntityMana...
Allowed characters in Linux environment variable names
...='. For values to be
portable across systems conforming to
IEEE Std 1003.1-2001, the value shall
be composed of characters from the
portable character set (except NUL
and as indicated below).
So names may contain any character except = and NUL, but:
Environment variable names used by...
Magic number in boost::hash_combine
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The magic number is supposed to be 32 random bits, where each is equally likely to be 0 or 1, and with no simple correlation between the bits. A common way to find a string of such bits is to use the binary expansion of an irrational number; in this case, that...
Allowed characters in filename [closed]
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edited Jul 5 '19 at 1:31
answered Jan 27 '11 at 8:22
pa...
How do I inspect the view hierarchy in iOS?
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Xcode 6 now has 3D view hierarchy inspection built in like Reveal App and Spark Inspector.
Click on the "Debug View Hierarchy" button while your app is running to pause execution and inspect the views at the current moment.
More info a...