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Ruby Array slice!()用法及代码示例


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

用法:Array.slice!()

参数:数组


返回:删除索引或范围给定的元素。

范例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]

范例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



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