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Efficient way to determine number of digits in an integer
...
Well, the most efficient way, presuming you know the size of the integer, would be a lookup. Should be faster than the much shorter logarithm based approach. If you don't care about counting the '-', remove the + 1.
// generic solution
template <class T>
int n...
What must I know to use GNU Screen properly? [closed]
... to GNU Screen and they're having a hard time getting used to it. That makes me think about the essential things he needs to know about the excellent Screen utility, the same things that you'd think worthwhile to teach someone, a beginner, from the ground up. What are some analogies and handy ti...
Combine two data frames by rows (rbind) when they have different sets of columns
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rbind.fill from the package plyr might be what you are looking for.
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Get generic type of java.util.List
...certain class, then you can get them with a little help of reflection:
package test;
import java.lang.reflect.Field;
import java.lang.reflect.ParameterizedType;
import java.util.ArrayList;
import java.util.List;
public class Test {
List<String> stringList = new ArrayList<String>(...
UITableView - scroll to the top
...rollView, so you can also use:
[mainTableView scrollRectToVisible:CGRectMake(0, 0, 1, 1) animated:YES];
Or
[mainTableView setContentOffset:CGPointZero animated:YES];
And in Swift:
mainTableView.setContentOffset(CGPointZero, animated:true)
And in Swift 3 & above:
mainTableView.setConten...
Best way to find if an item is in a JavaScript array? [duplicate]
...rr,obj) {
return (arr.indexOf(obj) != -1);
}
EDIT:
This will not work on IE6, 7 or 8 though. The best workaround is to define it yourself if it's not present:
Mozilla's (ECMA-262) version:
if (!Array.prototype.indexOf)
{
Array.prototype.indexOf = function(searchElement /*, from...
Numpy: find first index of value fast
...ited Oct 21 '13 at 7:44
Jacques Kvam
2,06611 gold badge2020 silver badges2727 bronze badges
answered Oct 5 '11 at 11:05
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“loop:” in Java code. What is this, and why does it compile?
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It is not a keyword it is a label.
Usage:
label1:
for (; ; ) {
label2:
for (; ; ) {
if (condition1) {
// break outer loop
break label1;
}
if ...
how to get the cookies from a php curl into a variable
...asonable communication protocol he just embedded all of his response as cookies in the header.
8 Answers
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CSS Background Opacity [duplicate]
...convenient if they didn't.
You can use a translucent PNG file for your background image, or use an RGBa (a for alpha) color for your background color.
Example, 50% faded black background:
<div style="background-color:rgba(0, 0, 0, 0.5);">
<div>
Text added.
</div&...