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Understanding dispatch_async
...e is to run tasks in the background.
For instance, if I am downloading a file from the internet and I want to update the user on the progress of the download, I will run the download in the priority default queue and update the UI in the main queue asynchronously.
dispatch_async(dispatch_get_glob...
C Macro definition to determine big endian or little endian machine?
...
Code supporting arbitrary byte orders, ready to be put into a file called order32.h:
#ifndef ORDER32_H
#define ORDER32_H
#include <limits.h>
#include <stdint.h>
#if CHAR_BIT != 8
#error "unsupported char size"
#endif
enum
{
O32_LITTLE_ENDIAN = 0x03020100ul,
O32_B...
Difference between solr and lucene
...work.
Examples are Solr, Elastic Search, LinkedIn (yes, under the hood), etc..
Check out this article: Lucene vs Solr
UPDATE (6/18/14)
When to use Lucene?
You are a search engineer AND
You are a programmer AND
You want full control over almost all the internals of Lucene AND
Your requirements...
Center a column using Twitter Bootstrap 3
...
Simply add the following to your custom CSS file. Editing Bootstrap CSS files directly is not recommended and cancels your ability to use a CDN.
.center-block {
float: none !important
}
Why?
Bootstrap CSS (version 3.7 and lower) uses margin: 0 auto;, but it get...
What approaches are available to dummy design-time data in WPF?
...You also need the following, or the VS2012 compiler won't compile the xaml file: xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" and mc:Ignorable="d"
– Orion Edwards
Dec 26 '12 at 20:31
...
Algorithm to get the excel-like column name of a number
...recursive function (Based on zero indexed numbers, meaning 0 == A, 1 == B, etc)...
function getNameFromNumber($num) {
$numeric = $num % 26;
$letter = chr(65 + $numeric);
$num2 = intval($num / 26);
if ($num2 > 0) {
return getNameFromNumber($num2 - 1) . $letter;
} else ...
When do you use POST and when do you use GET?
...eem absurd from a security standpoint when it leads to data exposed in log files etc., but it is fail-safe with regards to the server-side data (the serve should not modify data upon a GET). I suppose, one would set the focus differently today (preferably by dropping any default and making method ma...
Can I “multiply” a string (in C#)?
... the scenes, then mutates it. It doesn't work like a regular List<T> etc.
– Marc Gravell♦
Feb 10 '09 at 16:05
1
...
How do I change the language of moment.js?
...e.js.
Link 'de.js' in your project
Linking the de.js in my main project file automatically changed the locale for all accesses to the moment class and its methods.
There will be no need anymore to do a moment.locale("de"). or
moment.lang("de"). in the source code.
Just link your desired loc...
Integrate ZXing in Android Studio
...n: org.gradle.process.internal.ExecException: Process 'command 'C:\Program Files\Java\jdk1.8.0_60\bin\java.exe'' finished with non-zero exit value 2
– Konstantin Konopko
Dec 10 '15 at 12:42
...