Pattern: Parameter assignment in filter closure
Issue: -
An assignment operator was used on a parameter, or a property or subproperty of the parameter, in a filtering or searching closure. This is usually a typo, and the comparison operator (==) was intended.
This rule will check the following filter methods: find, findAll, findIndexOf, every, any, filter, grep, dropWhile and takeWhile.
List someList = [1,2,3]
someList.find {it == 2}
someList.find {it = 2} // violation, this actually finds 1 instead.
someList.find { int integer ->
integer == 2
}
someList.find { int integer ->
integer = 2 // violation, this actually finds 1 instead.
}
someList.takeWhile { it.name = 42 } // violation