Scala 设置 forall() 方法与示例
forall()方法用于检查给定谓词是否满足集合的所有元素。
Method Definition: def forall(p: (A) => Boolean): Boolean
Return Type: It returns true if the stated predicate holds true for all the elements of the set else it returns false.
示例 #1:
// Scala program of forall()
// method
// Creating object
object GfG
{
// Main method
def main(args:Array[String])
{
// Creating a set
val s1 = Set(3, 6, 12, 9, 21)
// Applying forall method
val result = s1.forall(y => {y % 3 == 0})
// Displays output
println(result)
}
}
输出:
true
示例 #2:
// Scala program of forall()
// method
// Creating object
object GfG
{
// Main method
def main(args:Array[String])
{
// Creating a set
val s1 = Set(3, 7, 12, 9, 21)
// Applying forall method
val result = s1.forall(y => {y % 3 == 0})
// Displays output
println(result)
}
}
输出:
false