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How will I know when to create an interface?
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it solves this concrete problem:
you have a, b, c, d of 4 different types. all over your code you have something like:
a.Process();
b.Process();
c.Process();
d.Process();
why not have them implement IProcessable, and then...
Bootstrap 3 Navbar Collapse
...increase the point at which the bootstrap 3 navbar collapses (i.e. so that it collapses into a drop down on portrait tablets)?
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static constructors in C++? I need to initialize private static objects
I want to have a class with a private static data member (a vector that contains all the characters a-z). In java or C#, I can just make a "static constructor" that will run before I make any instances of the class, and sets up the static data members of the class. It only gets run once (as the vari...
Fastest way to convert string to integer in PHP
...a quick benchmarking exercise:
Function time to run 1 million iterations
--------------------------------------------
(int) "123": 0.55029
intval("123"): 1.0115 (183%)
(int) "0": 0.42461
intval("0"): 0.95683 (225%)
(int) int...
How to get index of object by its property in JavaScript?
...ggest, looping through the array is probably the best way. But I would put it in it's own function, and make it a little more abstract:
function findWithAttr(array, attr, value) {
for(var i = 0; i < array.length; i += 1) {
if(array[i][attr] === value) {
return i;
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What does .SD stand for in data.table in R
.SD looks useful but I do not really know what I am doing with it. What does it stand for? Why is there a preceding period (full stop). What is happening when I use it?
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Stateless and Stateful Enterprise Java Beans
...tain their state in between method calls, why is my program acting the way it is?
7 Answers
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Renaming a virtualenv folder without breaking it
I've created folder and initialized a virtualenv instance in it.
10 Answers
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pythonic way to do something N times without an index variable?
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A slightly faster approach than looping on xrange(N) is:
import itertools
for _ in itertools.repeat(None, N):
do_something()
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Detect Click into Iframe using JavaScript
I understand that it is not possible to tell what the user is doing inside an iframe if it is cross domain. What I would like to do is track if the user clicked at all in the iframe . I imagine a scenario where there is an invisible div on top of the iframe and the the div will just then ...