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What's the (hidden) cost of Scala's lazy val?
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answered Jun 15 '10 at 7:51
oxbow_lakesoxbow_lakes
127k5252 gold badges305305 silver badges442442 bronze badges
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How to apply a function to two columns of Pandas dataframe
...use groupby?
– bigbug
Nov 12 '12 at 10:42
Added an example to my answer, hope this does what you're looking for. If no...
How to find the size of localStorage
... _x.length)* 2);_lsTotal+=_xLen; console.log(_x.substr(0,50)+" = "+ (_xLen/1024).toFixed(2)+" KB")};console.log("Total = " + (_lsTotal / 1024).toFixed(2) + " KB");
The same code in multiple lines for reading sake
var _lsTotal = 0,
_xLen, _x;
for (_x in localStorage) {
if (!localStorage.ha...
How to `go test` all tests in my project?
...or helping :)
– bumblebee
Jun 13 at 10:03
add a comment
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Use of 'prototype' vs. 'this' in JavaScript?
...onal means?
– phant0m
Sep 26 '12 at 10:10
23
I second what @Bergi said about prototypes. Functio...
How to set the prototype of a JavaScript object that has already been instantiated?
...nd no IE ever will). It's likely it'll work in webkit and moz for the next 10 years as ES6 won't be finalized until 2013.
Brendan Eich - re:Approach of new Object methods in ES5:
Sorry, ... but settable __proto__, apart from the object initialiser use case (i.e., on a new object not yet reachab...
What does “for” attribute do in HTML tag?
...
Joseph Quinsey
8,4321010 gold badges4747 silver badges7070 bronze badges
answered Aug 25 '13 at 19:17
Jukka K. KorpelaJuk...
How do I get the number of elements in a list?
... return len(self)
You can use it like so:
>>> l = slist(range(10))
>>> l.length
10
>>> print l
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
Essentially, it's exactly identical to a list object, with the added benefit of having an OOP-friendly length property.
As always, your mile...
How to detect if multiple keys are pressed at once using JavaScript?
...(2);
intervals[name] = setInterval(watch_loop(keylist, callback), 1000/24);
}
function unwatch(name)
{
clearInterval(intervals[name]);
delete intervals[name];
}
function detach()
{
parent.removeEventListener("keydown", ev_kdown);
par...
Convert base-2 binary number string to int
...comprehension of the primitive way of converting binary to decimal ( e.g. 110 = 2**0 * 0 + 2 ** 1 * 1 + 2 ** 2 * 1)
add = lambda x,y : x + y
reduce(add, [int(x) * 2 ** y for x, y in zip(list(binstr), range(len(binstr) - 1, -1, -1))])
...