Merge pull request coffeescript-cookbook#123 from nonsensery/con-splat-enate-arrays

Con-splat-enate Arrays

Author: sukima

authors.md

@@ -23,6 +23,7 @@ The following people are totally rad and awesome because they have contributed r
 * [Anton Rissanen](http://github.com/antris) *[email protected]*
 * Calum Robertson *http://github.com/randusr836*
 * Jake Burkhead *https://github.com/jlburkhead*
+* [Alex Johnson](https://github.com/nonsensery)
 * ...You! What are you waiting for? Check out the [contributing](/contributing) section and get cracking!
 
 # Developers

chapters/arrays/concatenating-arrays.md

@@ -56,6 +56,16 @@ array1
 # => [1, 2, 3, 4, 5, 6]
 {% endhighlight %}
 
+A more idiomatic approach is to use the splat operator (`...`) directly in an array literal. This can be used to concatenate any number of arrays.
+
+{% highlight coffeescript %}
+array1 = [1, 2, 3]
+array2 = [4, 5, 6]
+array3 = [array1..., array2...]
+array3
+# => [1, 2, 3, 4, 5, 6]
+{% endhighlight %}
+
 ## Discussion
 
 CoffeeScript lacks a special syntax for joining arrays, but `concat()` and `push()` are standard JavaScript methods.