极客教程Ruby 数组的slice!()函数
Array#slice!() : slice!() 是一个数组类的方法，可以删除由索引或范围给定的元素。
语法。Array.slice!()
参数。数组
返回。删除由索引或范围给出的元素。
例子 #1 :
# Ruby code for slice!() method
# declaring array
a = [18, 22, 33, nil, 5, 6]
# declaring array
b = [1, 4, 1, 1, 88, 9]
# declaring array
c = [18, 22, 50, 6]
# slice! method example
puts "slice!() method form : #{a.slice!(2, 4)}\n\n"
puts "slice!() method form : #{b.slice!(1, 3)}\n\n"
puts "slice!() method form : #{c.slice!(2, 3)}\n\n"Ruby
输出:
slice!() method form : [33, nil, 5, 6]
slice!() method form : [4, 1, 1]
slice!() method form : [50, 6]
Ruby
例子 #2 :
# Ruby code for slice!() method
# declaring array
a = ["abc", "nil", "dog"]
# declaring array
c = ["cat", nil]
# declaring array
b = ["cow", nil, "dog"]
# slice! method example
puts "slice!() method form : #{a.slice!(1, 3)}\n\n"
puts "slice!() method form : #{b.slice!(1, 2)}\n\n"
puts "slice!() method form : #{c.slice!(0)}\n\n"Ruby
输出:
slice!() method form : ["nil", "dog"]
slice!() method form : [nil, "dog"]
slice!() method form : cat
Ruby