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How can I output leading zeros in Ruby?
...for C programmers is important for your project, then it's a great idea to customize that cop configuration; it's built to be customizable for individuals needs, and Ruby discourages the "one way to do it" mindset! But, following the community style guide is surely idiomatic Ruby.
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PHP: How to remove all non printable characters in a string?
... a variety string lengths with random data, and this pattern emerged using php 7.0.12
2 chars str_replace 5.3439ms preg_replace 2.9919ms preg_replace is 44.01% faster
4 chars str_replace 6.0701ms preg_replace 1.4119ms preg_replace is 76.74% faster
8 chars str_replace ...
Unexpected results when working with very big integers on interpreted languages
...et the sum of 1 + 2 + ... + 1000000000 , but I'm getting funny results in PHP and Node.js .
36 Answers
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What are deferred objects?
...
Please explain more. How do I create my own custom Deferred Objects. How do they work?
– user113716
Feb 1 '11 at 18:59
3
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Traits vs. interfaces
I've been trying to study up on PHP lately, and I find myself getting hung up on traits. I understand the concept of horizontal code reuse and not wanting to necessarily inherit from an abstract class. What I don't understand is: What is the crucial difference between using traits versus interfaces?...
How does TestFlight do it?
...
Yes this is a core feature of iOS for Enterprise Customers who wish to distribute OTA.
Presumably you would pass your UDID over to TestFlight along with the app and they use their Enterprise Licence to send the app to you. I'm sure I'm missing a lot of the technical detai...
PHP Sort Array By SubArray Value
...- $b["optionNumber"];
}
...
usort($array, "cmp_by_optionNumber");
In PHP ≥5.3, you should use an anonymous function instead:
usort($array, function ($a, $b) {
return $a['optionNumber'] - $b['optionNumber'];
});
Note that both code above assume $a['optionNumber'] is an integer. Use @St...
How do I get the base URL with PHP?
...
Try this:
<?php echo "http://" . $_SERVER['SERVER_NAME'] . $_SERVER['REQUEST_URI']; ?>
Learn more about the $_SERVER predefined variable.
If you plan on using https, you can use this:
function url(){
return sprintf(
"%s://%s...
How to update a single library with Composer?
...ust want to update a few packages and not all, you can list them as such:
php composer.phar update vendor/package:2.* vendor/package2:dev-master
You can also use wildcards to update a bunch of packages at once:
php composer.phar update vendor/*
--prefer-source: Install packages from source wh...
Best way to give a variable a default value (simulate Perl ||, ||= )
...
In PHP 7 we finally have a way to do this elegantly. It is called the Null coalescing operator. You can use it like this:
$name = $_GET['name'] ?? 'john doe';
This is equivalent to
$name = isset($_GET['name']) ? $_GET['name'...