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Jay Gabriels

Software Developer in San Francisco

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My last post I wrote about how you can use “&” to turn a block to a proc, and vis versa. This is handy because blocks are not objects you can’t store them in a variable to pass around. Splat does something similar to “&” but for arrays and strings.

a = ["a", "b", "c", "d"]
def something( a ) 
   p *a


Here the splat operator turns the array into a list, when its an argument in the something method.

Doing this the opposite way, the splat can used to accept an unknown amount arguments into a method, storing them in an array once inside the method.

a = ["a", "b", "c", "d"]
def something(*a)
   p a
something("I", "could", "use", "more")

This will return [“I”, “could”, “use”, “more”]