Trailing closure syntax can only be used with the last argument to a function call. Place a function type parameter anywhere else in the list and
you limit the options of the caller.
Noncompliant code example
func foo(p1: Int->Int, p2: Int){ // Noncompliant; p1 should come at the end
print(p1(p2))
}
foo({a in a * 2}, 42) // Trailing closure syntax can't be used here
Compliant solution
func foo(p2: Int, p1: Int->Int){
print(p1(p2))
}
foo(42) {a in a * 2}
