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<!--
    CHECK IF A STRING IS NULL OR EMPTY
--> 

<!-- Example XML -->
<group> 
    <item> 
        <id>item 1</id> 
        <CategoryName>blue</CategoryName> 
    </item> 

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Sublime Text 3 Setup

Install Package Control

Install Package Control for easy package management.

1. Open the console with Ctrl+`
2. Paste in the following:

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@function em($target, $context: $base-font-size) {
   @if $target == 0 { @return 0 }
   @return $target / $context + 0em;
}

$base-font-size: 15px;

h1 {
	font-size: em(21px, 15px); // Outputs 1.4em
}

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<?xml version='1.0' encoding='iso-8859-1'?>

<!-- XHTML-to-Markdown converter by Andrew Green, Article Seven, http://www.article7.co.uk/ -->
<!-- This work is licensed under the Creative Commons Attribution-ShareAlike License. To view a copy of this license, visit http://creativecommons.org/licenses/by-sa/2.0/ or send a letter to Creative Commons, 559 Nathan Abbott Way, Stanford, California 94305, USA. -->

<xsl:stylesheet version='1.0' xmlns:h="http://www.w3.org/1999/xhtml" xmlns:xsl='http://www.w3.org/1999/XSL/Transform'>

   <xsl:output method='text' encoding='utf-8'/>
   

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function cartesianProductOf() {
    return _.reduce(arguments, function(a, b) {
        return _.flatten(_.map(a, function(x) {
            return _.map(b, function(y) {
                return x.concat([y]);
            });
        }), true);
    }, [ [] ]);
};

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@foreach (array_slice($posts->toArray(), 0, 5) as $post)
 
<h1>{{ $post['title'] }}</h1>
 
@endforeach

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<?php
    
    /**
     * Custom Datasource Skeleton
     * 
     * A bare-bones example of a custom datasource for use with Symphony 2.3
     * 
     * @author:     Ian Young
     * @email:      i.young@me.com
     * @date:       12.01.2014

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<!-- Add the 'math' namespace to your XML stylesheet (so we can use 'math:random') -->
<xsl:stylesheet version="1.0"
    xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
    xmlns:math="http://exslt.org/math"
    extension-element-prefixes="math">

<!-- Pick a random number between 1 - 10 and set as a variable -->
<xsl:value-of select="(floor(math:random()*10) mod 10) + 1" />

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<!--
    ALTERNATIVE SEARCH & REPLACE
    string:     The text to be evaluated
    replace:    The character or string to look for in the above string
    with:       What to replace it with

    Slightly more long winded approach if that's how you prefer to roll.
--> 

<xsl:template name="string-replace">

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Sometimes you need to keep two upstreams in sync with eachother. For example, you might need to both push to your testing environment and your GitHub repo at the same time. In order to do this simultaneously in one git command, here's a little trick to add multiple push URLs to a single remote.

Once you have a remote set up for one of your upstreams, run these commands with:

git remote set-url --add --push [remote] [original repo URL]
git remote set-url --add --push [remote] [second repo URL]

Once set up, git remote -v should show two (push) URLs and one (fetch) URL. Something like this: