Method in the object referred to by variable a is called with b as its argument.
Ruby splat operator.
For example a plus.
For each operator plus.
Def doublesplat nums p numsenddoublesplat one.
This article has been republished on monkey and crow.
In one of my recent posts someone pointed out that using the splat operator would have made some of the code a bit simpler.
As of ruby 1 9 you can do some pretty odd things with array destructuring and splatting.
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.
Zoo pet1 pet2 pet3 the splat operator can be used in a case statement.
You ve probably used splats for catch all arguments.
Here s an example for the most basic use of a double splat.
Attr reader title author category that s the power of the splat operator matching operator what is this funny looking ruby.
Here is how to create a method that adds a variable number of numbers passed as arguments.
The splat operator can be used to create methods that accept a variable number of arguments.
In other words the last example translates to.
It s pretty similar to the original splat with one difference.
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.
2 one 1 two 2 putting it all together.
B is interpreted as a plus b where the plus.
Ruby supports a rich set of operators as you d expect from a modern language.
There is a corresponding form of abbreviated assignment operator.
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.
So it would be like taking away the array replacing it with everything inside it.
The double splat operator came out back in ruby 2 0.
Avoiding creation of array improves performance.
The splat operator converts the array into a list of its elements.
The split mode.
It can be used for hashes.
Case when with splat operator use instructions like duparray concatarray which result in creation of arrays.
The humble splat operator and is a great example.
Most operators are actually method calls.
