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How to get function parameter names/values dynamically?
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The following function will return an array of the parameter names of any function passed in.
var STRIP_COMMENTS = /((\/\/.*$)|(\/\*[\s\S]*?\*\/))/mg;
var ARGUMENT_NAMES = /([^\s,]+)/g;
function getParamNames(func) {
var fnStr = func.toString().replace(STRIP_C...
Null coalescing in powershell
...nditional member access for members: ?.
Null-conditional member access for arrays et al: ?[]
These have a few caveats:
Since these are experimental, they're subject to change. They may no longer be considered experimental by the time you read this, and the list of caveats may have changed.
Vari...
How to easily map c++ enums to strings
... time automatically. I would probably prefer just generating a dumb static array.
– Martin Beckett
Mar 5 '09 at 16:46
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How to take the first N items from a generator or list in Python? [duplicate]
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Slicing a list
top5 = array[:5]
To slice a list, there's a simple syntax: array[start:stop:step]
You can omit any parameter. These are all valid: array[start:], array[:stop], array[::step]
Slicing a generator
import itertools
top5 = iterto...
Convert JavaScript string in dot notation into an object reference
...ces who find themselves in this case, should instead consider working with array representations, e.g. ['x','a','b','c'], or even something more direct/simple/straightforward if possible: like not losing track of the references themselves in the first place (most ideal if it's only client-side or on...
Malloc vs new — different padding
... Thanks for the points about alignment. The data in question is a char array, so I suspect it's not an alignment thing here, nor a struct thing -- though that was my first thought too.
– hcarver
Nov 8 '12 at 12:30
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Cosine Similarity between 2 Number Lists
...imilarity
In [24]: cosine_similarity([[1, 0, -1]], [[-1,-1, 0]])
Out[24]: array([[-0.5]])
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PHP Foreach Pass by Reference: Last Element Duplicating? (Bug?)
...f the loop, we'll echo the value of $item as well as recursively print the array $arr.
When the first loop is run through, we see this output:
foo
Array ( [0] => foo [1] => bar [2] => baz )
bar
Array ( [0] => foo [1] => bar [2] => baz )
baz
Array ( [0] => foo [1] => bar [2]...
How to debug a bash script? [closed]
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https://github.com/koalaman/shellcheck
A little example:
$ cat test.sh
ARRAY=("hello there" world)
for x in $ARRAY; do
echo $x
done
$ shellcheck test.sh
In test.sh line 3:
for x in $ARRAY; do
^-- SC2128: Expanding an array without an index only gives the first element.
fix the b...
Extract first item of each sublist
...my favorite) use numpy:
>>> import numpy as np
>>> a=np.array([[1,2,3],[11,12,13],[21,22,23]])
>>> a
array([[ 1, 2, 3],
[11, 12, 13],
[21, 22, 23]])
>>> a[:,0]
array([ 1, 11, 21])
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