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Replace whole line containing a string using Sed
...o make the changes in-place. For example, using GNU sed:
sed -i '/TEXT_TO_BE_REPLACED/c\This line is removed by the admin.' /tmp/foo
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How can I randomize the lines in a file using standard tools on Red Hat Linux?
...l -MList::Util -e 'print List::Util::shuffle <>'
It uses a module, but the module is part of the Perl code distribution. If that's not good enough, you may consider rolling your own.
I tried using this with the -i flag ("edit-in-place") to have it edit the file. The documentation suggests i...
Nested defaultdict of defaultdict
Is there a way to make a defaultdict also be the default for the defaultdict? (i.e. infinite-level recursive defaultdict?)
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Convert UTC datetime string to local datetime
...had to convert time to and from UTC. Recently had a request to have my app be timezone aware, and I've been running myself in circles. Lots of information on converting local time to UTC, which I found fairly elementary (maybe I'm doing that wrong as well), but I can not find any information on easi...
How to export JavaScript array info to csv (on client side)?
I know there are lot of questions of this nature but I need to do this using JavaScript. I am using Dojo 1.8 and have all the attribute info in array, which looks like this:
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Why doesn't a python dict.update() return the object?
...e (with pragmatically induced exceptions such as pop;-) so they can't possibly be confused with accessors (and in the same vein, assignment is not an expression, the statement-expression separation is there, and so forth).
That doesn't mean there aren't a lot of ways to merge things up when you rea...
Are inline virtual functions really a non-sense?
...on when I received a code review comment saying virtual functions need not be inline.
13 Answers
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How to track down a “double free or corruption” error
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If you're using glibc, you can set the MALLOC_CHECK_ environment variable to 2, this will cause glibc to use an error tolerant version of malloc, which will cause your program to abort at the point where the double free is done.
You can set th...
Javascript replace with reference to matched group?
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"hello _there_".replace(/_(.*?)_/, function(a, b){
return '<div>' + b + '</div>';
})
Oh, or you could also:
"hello _there_".replace(/_(.*?)_/, "<div>$1</div>")
shar...
How do I rename an open file in Emacs?
...ename an open file in Emacs? While I'm viewing it? Something like save-as, but the original one should go away.
10 Answers
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