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Length of a JavaScript object
...dding methods to Object is usually safe, though.
Here's an update as of 2016 and widespread deployment of ES5 and beyond. For IE9+ and all other modern ES5+ capable browsers, you can use Object.keys() so the above code just becomes:
var size = Object.keys(myObj).length;
This doesn't have to m...
How to make a great R reproducible example
...ector 1:10 in random order.
a random factor : x <- sample(letters[1:4], 20, replace = TRUE)
For matrices, one can use matrix(), eg :
matrix(1:10, ncol = 2)
Making data frames can be done using data.frame(). One should pay attention to name the entries in the data frame, and to not make it ov...
How to move screen without moving cursor in Vim?
...eaker for me
– gadelat
May 8 '16 at 20:11
9
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How to insert a text at the beginning of a file?
...length input.
– jthill
Oct 5 '15 at 20:38
2
The flaw of this solution is that it doesn't add the ...
Can Flask have optional URL parameters?
...ints and url_for ?
– user427165
Jun 20 '13 at 18:05
2
Not that I know of. Even Flask docs contain...
How to set default font family for entire Android app
... |
edited Jan 7 '16 at 20:10
Hussein El Feky
5,83955 gold badges4242 silver badges5656 bronze badges
...
virtualenvwrapper and Python 3
...
answered Apr 20 '13 at 18:12
unutbuunutbu
665k138138 gold badges14831483 silver badges14731473 bronze badges
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What MySQL data type should be used for Latitude/Longitude with 8 decimal places?
...ary approximation.
– gandaliter
Sep 20 '12 at 15:03
1
By the doubt of precision, I'm going to DOU...
Local dependency in package.json
...
620
npm >= 2.0.0
This feature was implemented in the version 2.0.0 of npm. Example:
{
"name"...
JavaScript function similar to Python range()
...
2018: this answer keeps getting upvotes, so here's an update. The code below is obsolete, but luckily ES6 standardized generators and the yield keyword, and they are universally supported across platforms. An example of the l...