Ruby Splat Operator

So it would be like taking away the array replacing it with everything inside it.

Ruby splat operator.

The split mode. I ve seen the splat operator being used in method definitions to group remaining arguments but it turns out there are actually quite a few other uses as well. In one of my recent posts someone pointed out that using the splat operator would have made some of the code a bit simpler. 2 one 1 two 2 putting it all together.

You may use an operator but do a little digging and you ll find that you ve only been scratching the surface of what it s capable of. Zoo pet1 pet2 pet3 the splat operator can be used in a case statement. Putting the star before an object invokes the splat operator which has a variety of effects first we ll start with some very useful examples then we will poke around the dark corners of ruby s arrays and the splat operator. Pet1 pet2 pet3 duck dog cat the collect mode.

The splat operator can be used to create methods that accept a variable number of arguments. It can be used for hashes. Here s an example for the most basic use of a double splat. Most operators are actually method calls.

Ruby supports a rich set of operators as you d expect from a modern language. This article has been republished on monkey and crow. For example a plus. You ve probably used splats for catch all arguments.

Def doublesplat nums p numsenddoublesplat one. There is a corresponding form of abbreviated assignment operator. Splat operator in ruby. For each operator plus.

Attr reader title author category that s the power of the splat operator matching operator what is this funny looking ruby. Method in the object referred to by variable a is called with b as its argument. B is interpreted as a plus b where the plus. It s pretty similar to the original splat with one difference.

The humble splat operator and is a great example. The splat operator converts the array into a list of its elements. Here is how to create a method that adds a variable number of numbers passed as arguments. Avoiding creation of array improves performance.

As of ruby 1 9 you can do some pretty odd things with array destructuring and splatting. Case when with splat operator use instructions like duparray concatarray which result in creation of arrays.