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How can I join elements of an array in Bash?
...' '-e' '-E' '-n' #-e-n-E-n-n
join_by , #
join_by , a #a
The code above is based on the ideas by @gniourf_gniourf, @AdamKatz, and @MattCowell.
Alternatively, a simpler function that supports only single character delimiter, would be:
function join_by { local IFS="$1"; shift; echo "$*"; }
For exampl...
How to override the [] operator in Python?
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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Measure time in Linux - time vs clock vs getrusage vs clock_gettime vs gettimeofday vs timespec_get?
... issue in practice. Portability is questionable.
I wrote a hybrid function based on this snippet that uses clock_gettime when compiled on Linux, or a Mach timer when compiled on OS X, in order to get ns precision on both Linux and OS X.
All of the above exist in both Linux and OS X except where ot...
What does “program to interfaces, not implementations” mean?
...er.
EDIT
I have updated the example above and added an abstract Speaker base class. In this update, I added a feature to all Speakers to "SayHello". All speaker speak "Hello World". So that's a common feature with similar function. Refer to the class diagram and you'll find that Speaker abstract ...
WatiN or Selenium? [closed]
...ion tools are independent projects; there are 2 that I know of: Wax (Excel based, hosted on CodePlex) and WatiN Test Record (hosted on SourceForge). Neither is as robust as Selenium IDE.
Very good IE support. Can attach and detach to/from running instances. Can access native window handles etc. (Se...
Selecting and manipulating CSS pseudo-elements such as ::before and ::after using jQuery
...ttr(), too bad i wasn't able to use it with other properties than content. Demo
– Maksim Vi.
Jan 20 '12 at 1:05
29
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How can I have a newline in a string in sh?
...
What I did based on the other answers was
NEWLINE=$'\n'
my_var="__between eggs and bacon__"
echo "spam${NEWLINE}eggs${my_var}bacon${NEWLINE}knight"
# which outputs:
spam
eggs__between eggs and bacon__bacon
knight
...
How to Detect if I'm Compiling Code with a particular Visual Studio version?
...d do a runtime test. (If for some reason you wanted to run different code based on what compiler it was compiled with? Yeah, probably you were looking for the #ifdef. :))
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Converting XML to JSON using Python?
...ML to a dict+list+string structure, following this "standard". It is Expat-based, so it's very fast and doesn't need to load the whole XML tree in memory.
Once you have that data structure, you can serialize it to JSON:
import xmltodict, json
o = xmltodict.parse('<e> <a>text</a>...
Is there any difference between __DIR__ and dirname(__FILE__) in PHP?
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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