红宝石 |数组切片！（）函数

Array#slice!() : slice!()是一个 Array 类方法，它选择由索引或范围给定的元素。

Syntax: Array.slice!()

Parameter: Array

Return: Deletes the elements given by an index or by a range.

示例 #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"

输出 ：

slice!() method form : [33, nil, 5, 6]

slice!() method form : [4, 1, 1]

slice!() method form : [50, 6]

示例 #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"

输出 ：

slice!() method form : ["nil", "dog"]

slice!() method form : [nil, "dog"]

slice!() method form : cat