Elegant way for do … while in groovy

Question

How to do code something like this in groovy?

do {

  x.doIt()

} while (!x.isFinished())

Because there is no do ... w

Answer 1

So many answers and not a single one without a redundant call, a shame ;)

This is the closest it can get to purely language syntax based do-while in Groovy:

while ({
    x.doIt()
    !x.isFinished()
}()) continue

The last statement within curly braces (within closure) is evaluated as a loop exit condition.

Instead of continue keyword a semicolon can be used.

Additional nice thing about it, loop can be parametrized (kind of), like:

Closure somethingToDo = { foo ->
    foo.doIt()
    !foo.isFinished()
}

and then elsewhere:

while (somethingToDo(x)) continue

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Formerly I've proposed this answer over here: How do I iterate over all bytes in an inputStream using Groovy, given that it lacks a do-while statement?