Appending the same string to a list of strings in Groovy

Question

I want to append a string to each string in a list of strings. I was wanting to do something like this

def a = 'a '
def b = 'b '

[a,b].each {
    it += 'yo'
}

assertEquals a, 'a yo'
assertEquals b, 'b yo'

But obviously that's not going to work.

Answer 1

You can do

(a,b) = [a,b].collect { "$it yo" }