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Convert a series of parent-child relationships into a hierarchical tree?
...ion printTree($tree) {
if(!is_null($tree) && count($tree) > 0) {
echo '<ul>';
foreach($tree as $node) {
echo '<li>'.$node['name'];
printTree($node['children']);
echo '</li>';
}
echo '</ul>';
...
How to make an Android device vibrate?
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1013
Try:
import android.os.Vibrator;
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Vibrator v = (Vibrator) getSystemService(Context.VIBRATO...
csv.Error: iterator should return strings, not bytes
...Lennart RegebroLennart Regebro
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4
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Why does sys.exit() not exit when called inside a thread in Python?
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edited Dec 10 '19 at 22:37
Richard
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Union Vs Concat in Linq
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110
Union returns Distinct values. By default it will compare references of items. Your items have d...
How to show first commit by 'git log'?
...
Short answer
git rev-list --max-parents=0 HEAD
(from tiho's comment. As Chris Johnsen notices, --max-parents was introduced after this answer was posted.)
Explanation
Technically, there may be more than one root commit. This happens when multiple previously ind...
How to create a unique index on a NULL column?
I am using SQL Server 2005. I want to constrain the values in a column to be unique, while allowing NULLS.
4 Answers
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How to publish a website made by Node.js to Github Pages?
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104
GitHub pages host only static HTML pages. No server side technology is supported, so Node.js ap...
Prevent redirection of Xmlhttprequest
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102
Not according to the W3C standard for the XMLHttpRequest object (emphasis added):
If the re...
Using current time in UTC as default value in PostgreSQL
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303
A function is not even needed. Just put parentheses around the default expression:
create temp...