Over a million developers have joined DZone.
{{announcement.body}}
{{announcement.title}}

Groovy Goodness: Boolean Implications

DZone 's Guide to

Groovy Goodness: Boolean Implications

· Java Zone ·
Free Resource

Since Groovy 1.8.3 we can use the implies() method on Boolean types. The implies() method implements a logical implication. This means that if we have two Boolean variables A and B, that if A is true, then B is true. So if A is true then it is implied B is true as well. If A is false then B can be either true or false. We could rewrite the implication as !A or B.

def a = true
def b = true

assert a.implies(b)
assert !(a.implies(false))

assert a.implies(b) == ((!a).or(b))

assert true.implies(true)
assert false.implies(true)
assert false.implies(false)
assert !true.implies(false)

(Code written with Groovy 2.0.4)

 

Topics:

Published at DZone with permission of

Opinions expressed by DZone contributors are their own.

{{ parent.title || parent.header.title}}

{{ parent.tldr }}

{{ parent.urlSource.name }}