def list = ['Groovy', 'Grails', 'Java']
println(list.count { it.startsWith('G') } == 2)

Integer[] numbers = [1,2,3,4] as Integer[]
println(numbers.count { it > 2 } == 2)

def map = [user: 'dariogabriel113', city: 'Fortaleza', age: 23]
println(map.count { key, value -> key.size() == 3 } == 1)