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sed fails with “unknown option to `s'” error [closed]
...r (without having to declare the new delimiter), you can try using another one that doesn't appear in your replacement string:
replacement="/my/path"
sed --expression "s@pattern@$replacement@"
Note that this is not bullet proof: if the replacement string later contains @ it will break for the sam...
Remove duplicate entries using a Bash script [duplicate]
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worked for me, One more addition for other use, If you want to change the file itself here is the command sed -i '$!N; /^\(.*\)\n\1$/!P; D' <FileName>
– vishal sahasrabuddhe
Oct 21 '15 at 6:43
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Ajax tutorial for post and get [closed]
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Any recommendation for such tutorial is welcome, because I've only got one using Mootool but I'm searching for one using jQuery!
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GUI Tool for PostgreSQL [closed]
... I've been trying out pgAdmin, and frankly it seems terrible. I only have one database, and it takes me 6 clicks to open up my list of tables, then a right click and view in a separate window just to see the data in a table. I do not recommend it.
– CorayThan
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Charts for Android [closed]
...rch results) I made a list of libraries known to me.. As @CommonsWare mentioned there are super-similar questions/answers.. Anyway some libraries that can be used for making charts are:
Open Source:
AnyChart (Free for non-commercial, Paid for commercial)
MPAndroidChart
Holo Graph Library
aChartEngi...
Disable form auto submit on button click
... to do with the question this answers. If you have a new question then ask one but make sure you provide a clear problem statement and a minimal reproducible example.
– Quentin
Mar 9 '18 at 9:23
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A tool to convert MATLAB code to Python [closed]
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There are several tools for converting Matlab to Python code.
The only one that's seen recent activity (last commit from June 2018) is Small Matlab to Python compiler (also developed here: SMOP@chiselapp).
Other options include:
LiberMate: translate from Matlab to Python and SciPy (Requires P...
find first sequence item that matches a criterion [duplicate]
...if i == 1000][0]
next(i for i in xrange(100000) if i == 1000)
The first one needs 5.75ms, the second one 58.3µs (100 times faster because the loop 100 times shorter).
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When and why should I use a namedtuple instead of a dictionary? [duplicate]
...se, you could create a bunch of dicts where you used the same keys in each one, but assuming you will have only valid Python identifiers as keys and don't need mutability,
mynamedtuple.fieldname
is prettier than
mydict['fieldname']
and
mynamedtuple = MyNamedTuple(firstvalue, secondvalue)
i...
Correct use of transactions in SQL Server
I have 2 commands and need both of them executed correctly or none of them executed. So I think I need a transaction, but I don't know how to use it correctly.
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