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Get week of year in JavaScript like in PHP
...eks of previous
* or next year, overlap is up to 3 days.
*
* e.g. 2014/12/29 is Monday in week 1 of 2015
* 2012/1/1 is Sunday in week 52 of 2011
*/
function getWeekNumber(d) {
// Copy date so don't modify original
d = new Date(Date.UTC(d.getFullYear(), d.getMonth(), d.ge...
SQL - The conversion of a varchar data type to a datetime data type resulted in an out-of-range valu
...
MaheMahe
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Counting the number of elements with the values of x in a vector
...
You can just use table():
> a <- table(numbers)
> a
numbers
4 5 23 34 43 54 56 65 67 324 435 453 456 567 657
2 1 2 2 1 1 2 1 2 1 3 1 1 1 1
Then you can subset it:
> a[names(a)==435]
435
3
Or convert it into a data.frame if you're mor...
Which version of PostgreSQL am I running?
...
1674
Run this query from PostgreSQL:
SELECT version();
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How can I expand and collapse a using javascript?
...
184
Okay, so you've got two options here :
Use jQuery UI's accordion - its nice, easy and fast. Se...
How do I escape spaces in path for scp copy in Linux?
...rian Gunawan
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13
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Equivalent of jQuery .hide() to set visibility: hidden
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433
You could make your own plugins.
jQuery.fn.visible = function() {
return this.css('visibi...
How to check the extension of a filename in a bash script?
...of $file equal to .txt?" If so, you can use the following:
if [ ${file: -4} == ".txt" ]
Note that the space between file: and -4 is required, as the ':-' modifier means something different.
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Fast permutation -> number -> permutation mapping algorithms
I have n elements. For the sake of an example, let's say, 7 elements, 1234567. I know there are 7! = 5040 permutations possible of these 7 elements.
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