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sed error: “invalid reference \1 on `s' command's RHS”
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Don't you need to actually capture for that to work? i.e. for variant 2:
-r -e "s/WARNING: (\([a-zA-Z0-9./\\ :-]\+\))/${warn}WARNING: \1${c_end}/g" \
(Note: untested)
Without the -r argument back-references (like \1) won't work.
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Rank items in an array using Python/NumPy, without sorting array twice
...se slicing on the left-hand side in the last step:
array = numpy.array([4,2,7,1])
temp = array.argsort()
ranks = numpy.empty_like(temp)
ranks[temp] = numpy.arange(len(array))
This avoids sorting twice by inverting the permutation in the last step.
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Reuse a parameter in String.format?
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264
From the docs:
The format specifiers for general, character, and numeric types have the...
How can I replace a regex substring match in Javascript?
...d-0.testing';
var regex = /(asd-)\d(\.\w+)/;
str = str.replace(regex, "$11$2");
console.log(str);
Or if you're sure there won't be any other digits in the string:
var str = 'asd-0.testing';
var regex = /\d/;
str = str.replace(regex, "1");
console.log(str);
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How to fix the uninitialized constant Rake::DSL problem on Heroku?
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205
Put this in your Rakefile above require 'rake':
require 'rake/dsl_definition'
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cmake and libpthread
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213
@Manuel was part way there. You can add the compiler option as well, like this:
If you have ...
Add a number to each selection in Sublime Text 2, incremented once per selection
...to add insert a number that is incremented once per cursor in Sublime Text 2?
3 Answers
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Skip rows during csv import pandas
... a .csv file using pandas.read_csv() , however I don't want to import the 2nd row of the data file (the row with index = 1 for 0-indexing).
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Are default enum values in C the same for all compilers?
...n below, do all C compilers set the default values as x=0 , y=1 , and z=2 on both Linux and Windows systems?
4 Answers
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passing several arguments to FUN of lapply (and others *apply)
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122
If you look up the help page, one of the arguments to lapply is the mysterious .... When we loo...