Scala Set contains() 方法和示例
contains() 方法用于检查元素是否存在于 not 集合中。
Method Definition: def contains(elem: A): Boolean
Return Type: It returns true if the element is present in the set else it returns false.
示例 #1:
// Scala program of contains()
// method
// Creating object
object GfG
{
// Main method
def main(args:Array[String])
{
// Creating a set
val s1 = Set(41, 12, 23, 43, 1, 72)
// Applying contains() method
val result = s1.contains(1)
// Display output
print(result)
}
}
输出:
true
示例 #2:
// Scala program of contains()
// method
// Creating object
object GfG
{
// Main method
def main(args:Array[String])
{
// Creating a set
val s1 = Set(41, 12, 23, 43, 1, 72)
// Applying contains() method
val result = s1.contains(10)
// Display output
print(result)
}
}
输出:
false