红宝石 |可枚举的拒绝()函数
enumerable的reject()是 Ruby 中的一个内置方法,它返回 enumerable 中不满足块中给定条件的项目。如果没有给出块,它返回一个枚举器。
Syntax: enu.reject { |obj| block }
Parameters: The function takes a block whose condition is used to find the elements.
Return Value: It returns the items in the enum which does not satisfies the condition in the block. It returns an enumerator if no block is given.
示例 #1 :
# Ruby program for reject method in Enumerable
# Initialize
enu = (1..10)
# Prints
enu.reject { |obj| obj % 2 == 1}
输出:
[2, 4, 6, 8, 10]
示例 #2 :
# Ruby program for reject method in Enumerable
# Initialize
enu = [1, 7, 10, 11]
# Prints
enu.reject
输出:
Enumerator: [1, 7, 10, 11]:reject