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get keys of json-object in JavaScript [duplicate]
...o support IE8 or earlier (!), and B) If you did, you wouldn't do it with a one-off you wrote yourself or grabbed from an SO answer (and probably shouldn't have in 2011, either). You'd use a curated polyfill, possibly from es5-shim or via a transpiler like Babel that can be configured to include poly...
Cython: “fatal error: numpy/arrayobject.h: No such file or directory”
...bject.h: No such file or directory...compilation terminated error. Can anyone tell me if it's a problem with my code, or some esoteric subtlety with Cython?
...
Unique ways to use the Null Coalescing operator [closed]
...se branches of the original IF statement called the same method, replacing one of its arguments with a different value if a certain input is NULL. With the null coalescing operator, it's one call. This is really powerful when you have a method that needs two or more such substitutions!
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Convert a series of parent-child relationships into a hierarchical tree?
...s to a tree structure and another recursive function to print it out. Only one function would suffice but here's two for clarity (a combined function can be found at the end of this answer).
First initialize the array of child/parent pairs:
$tree = array(
'H' => 'G',
'F' => 'G',
...
Move entire line up and down in Vim
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If I want to swap one line with the line above I usually do the following
ddkP
Explanation
dd will delete the line and add it to the default register.
k will move up a line (j would move down a line)
P will paste above the current line
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Deleting folders in python recursively
...Does the rmtree deleted the entire directory? I guess it is similar to the one rm -Rf $DIR
– sriram
Oct 29 '12 at 8:31
7
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How to highlight a current menu item?
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Just in case anyone was wondering about the code to not double up if the path is "/", this is it (sorry for the formatting): $scope.getClass = function (path) { if ($location.path().substr(0, path.length) == path) { if (...
mysql -> insert into tbl (select from another table) and some default values [duplicate]
As the title says, I am trying to insert into one table selecting values from another table and some default values.
5 Ans...
Python concatenate text files
...le:
outfile.write(infile.read())
… and another interesting one that I thought of:
filenames = ['file1.txt', 'file2.txt', ...]
with open('path/to/output/file', 'w') as outfile:
for line in itertools.chain.from_iterable(itertools.imap(open, filnames)):
outfile.write(line)
...
How to exclude a directory in find . command
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One of the comments in the accepted answer points out the problem. -prune does not exclude the directory itself, it exclude its content, which means you are going to get an unwanted line in the output with the excluded direct...