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Is there a regular expression to detect a valid regular expression?
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That's not a very precise description of the pumping lemma. First, it is the whole language that can be regular or not, not a single string. Second, it is a necessary, not a sufficient, condition for regularity. Finally, only sufficiently long strings...
Cast to int vs floor
...ing dropped”. See (although it is written for C): blog.frama-c.com/index.php?post/2013/10/09/…
– Pascal Cuoq
Dec 30 '14 at 22:23
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Why can't I inherit static classes?
...at class has 5 helper methods and 2 methods that return a string (name and description). I might have picked it wrong (I think so), but the only solution I found was to instantiate the class in the generic loader, to access the methods... meh.
– ANeves thinks SE is evil
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Why does UITableViewCell remain highlighted?
...oller, as it should be.
Taken from http://forums.macrumors.com/showthread.php?t=577677
Swift version
override func viewDidAppear(_ animated: Bool) {
super.viewDidAppear(animated)
// deselect the selected row if any
let selectedRow: IndexPath? = tableView.indexPathForSelectedRow
i...
How to trigger a file download when clicking an HTML button or JavaScript
...s like me that to set the Content-Disposition, all you have to do is: <?php header('Content-Disposition: attachment; filename="filename.here"'); ?>
– user124384
Jul 24 '15 at 15:08
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How does Google's Page Speed lossless image compression work?
...Optim (lossless) and
ImageAlpha (lossy) for smaller PNG files (high-level description how it works) and
JPEGmini/MozJPEG (lossy) for better JPEG compressor.
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How to make Sequelize use singular table names
...r Project = sequelize.define('Project', {
title: Sequelize.STRING,
description: Sequelize.TEXT
})
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When to throw an exception?
... is a King of France. Presupposition failure is often seen with definite descriptions, and that's common when programming. E.g. "The head of a list" has a presupposition failure when a list is empty, and then it's appropriate to throw an exception.
– Mohan
Se...
How to select the nth row in a SQL database table?
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Actually, from here php.about.com/od/mysqlcommands/g/Limit_sql.htm, if you wanted to grab the 15th entry wouldn't you do LIMIT 14, 1 (0th is the first element, 1 of length
– committedandroider
Feb 6 '1...
Laravel: Get base url
...to('/');
App::make('url')->to('/');
Or inject the UrlGenerator:
<?php
namespace Vendor\Your\Class\Namespace;
use Illuminate\Routing\UrlGenerator;
class Classname
{
protected $url;
public function __construct(UrlGenerator $url)
{
$this->url = $url;
}
public...