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Is this a “good enough” random algorithm; why isn't it used if it's faster?
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Your QuickRandom implementation hasn't really an uniform distribution. The frequencies are generally higher at the lower values while Math.random() has a more uniform distribution. Here's a SSCCE which shows that:
package com.stackoverflow.q14491966;
import java.util.Arrays...
Is there a way to check if int is legal enum in C#?
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Check out Enum.IsDefined
Usage:
if(Enum.IsDefined(typeof(MyEnum), value))
MyEnum a = (MyEnum)value;
This is the example from that page:
using System;
[Flags] public enum PetType
{
None = 0, Dog = 1, Cat = 2, Rodent = 4, Bird = 8, Reptile = 16...
Most efficient way to determine if a Lua table is empty (contains no entries)?
What's the most efficient way to determine if a table is empty (that is, currently contains neither array-style values nor dict-style values)?
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Check if a user has scrolled to the bottom
...he .scroll() event on window, like this:
$(window).scroll(function() {
if($(window).scrollTop() + $(window).height() == $(document).height()) {
alert("bottom!");
}
});
You can test it here, this takes the top scroll of the window, so how much it's scrolled down, adds the height of th...
Is there a numpy builtin to reject outliers from a list
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That method works good enough if m is sufficiently large (e.g. m=6), but for small values of m this suffers from the mean the variance not being robust estimators.
– Benjamin Bannier
May 15 '13 at 9:53
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How do I use the conditional operator (? :) in Ruby?
...C (the parenthesis are not required). It's an expression that works like:
if_this_is_a_true_value ? then_the_result_is_this : else_it_is_this
However, in Ruby, if is also an expression so: if a then b else c end === a ? b : c, except for precedence issues. Both are expressions.
Examples:
puts (...
Check if all values of array are equal
... might be a bit late to the party... i think this doesn't work if your array is made of falses! for example try [false, false, false].reduce(function(a, b){return (a === b)?a:false;});
– George Flourentzos
Nov 27 '14 at 19:21
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How to check size of a file using Bash?
...zes instead. I.e. file.txt is normally 100k; how to make a script check if it is less than 90k (including 0), and make it do wget a new copy because the file is corrupt in this case.
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How to implement if-else statement in XSLT?
I am trying to implement an if -else statement in XSLT but my code just doesn't parse. Does anyone have any ideas?
5 Answe...
Move an array element from one array position to another
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If you'd like a version on npm, array-move is the closest to this answer, although it's not the same implementation. See its usage section for more details. The previous version of this answer (that modified Array.prototype.m...