vbarbarosh

#!/bin/bash

# http://www.gnu.org/software/bash/manual/bash.html#The-Set-Builtin
# http://redsymbol.net/articles/unofficial-bash-strict-mode/
set -o nounset -o errexit -o pipefail

# https://www.gnu.org/software/bash/manual/bash.html#Shell-Parameter-Expansion

# Check if $FOO is unset
test -z ${FOO+x} && echo FOO is unset

vbarbarosh

// Make a string safe to put into html
// https://stackoverflow.com/a/6234804/1478566
//
// Consider using https://github.com/mathiasbynens/he for production
function html_escape(s)
{
    return s
        .replace(/&/g, '&')
        .replace(/</g, '&lt;')
        .replace(/>/g, '&gt;')

vbarbarosh

// Make a string safe to put into RegExp
// https://stackoverflow.com/a/6969486
// https://stackoverflow.com/a/3561711
function js_escape_regexp(s)
{
    return s.replace(/[.*+?^${}()|[\]\\]/g, '\\$&');
}

vbarbarosh

// Shortcuts for making ranges of numbers

function range(begin, end)
{
    return Array(end - begin).fill(0).map((v,i) => i + begin);
}

function range_step(begin, end, step)
{
    const length = Math.ceil((end - begin)/step);

vbarbarosh

#!/bin/bash

# http://www.gnu.org/software/bash/manual/bash.html#The-Set-Builtin
# http://redsymbol.net/articles/unofficial-bash-strict-mode/
set -o nounset -o errexit -o pipefail

url='https://www.youtube.com/watch?v=u2oKnsiXBr8'

# Using `-o-` instead of `-o /dev/stdout` might lead to
# curl: (23) Failed writing body (4096 != 16384)

vbarbarosh

#!/bin/bash

# http://www.gnu.org/software/bash/manual/bash.html#The-Set-Builtin
# http://redsymbol.net/articles/unofficial-bash-strict-mode/
set -o nounset -o errexit -o pipefail

# usage: cat input.html | ./shell_docker_browserless_htmlpdf > a.pdf

html=`base64 -w0`

vbarbarosh

<?php

# Create an alias to a function

function foobar($a)
{
    echo 'hello ', $a, PHP_EOL;
}

function foobar_alias()

vbarbarosh

<?php

# Generate UUID in PHP

# http://en.wikipedia.org/wiki/Universally_unique_identifier
# http://www.php.net/manual/en/function.uniqid.php#94959
function uuid_v4()
{
	return sprintf('%04x%04x-%04x-%04x-%04x-%04x%04x%04x',

vbarbarosh

<?php

# Default options in functions

function foobar($opt = [])
{
    $opt += [
        'name' => 'default_name',
        'title' => 'Default Title',
    ];

vbarbarosh

<?php

# Use a function as an scope for variables

$foo = call_user_func(function () {
    $aa = 'Fusce vitae orci lorem.';
    $bb = 'In cursus nisi malesuada.';
    $cc = 'Etiam auctor, lectus eu lacinia condimentum.';
    return implode("\n", [$aa, $bb, $cc]);
});