[GROOVY-3976] Alternative to "with" called "tap" that has an implicate "return delegate" - ASF JIRA

XML

Word

Printable

JSON

In this code:

class Foo { String bar }
def x = new Foo().with {
  bar = "baz"
}

"x" is now a String with the value "baz" thanks to the implied return. To work around this, we have to say:

def x = new Foo().with {
  bar = "baz"
  return delegate
}

...which is pretty ugly, to say the least.

So can we modify the "with" syntax to have an implied "return delegate"? I doubt anyone was depending on the previous behavior for code correctness.

Test will be this:

class Foo { String bar }
def x = new Foo().with {
  bar = "baz"
}
assert x instanceof Foo
assert x.bar == "baz"

is duplicated by

GROOVY-4442 'with' method should return the object in which it was called

relates to

GROOVY-5788 Add inline() method to Object