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Ruby Array drop()用法及代码示例


Array#drop():drop()是一种Array类方法,可从数组中删除第一个“ n”个元素,然后返回其余元素。

用法: Array.drop()

参数:  'n' - no. of elements to drop.

返回: array after removing first n elements

代码#1:drop()方法示例

# Ruby code for drop() method 
  
# declaring array 
a = [18, 22, 33, nil, 5, 6] 
  
# declaring array 
b = [1, 4, 1, 1, 88, 9] 
  
# declaring array 
c = [18, 22, nil, nil, 50, 6] 
  
# drop 
puts "drop:#{a.drop(5)}\n\n"
  
# drop 
puts "drop:#{b.drop(0)}\n\n"
  
# drop 
puts "drop:#{c.drop(20)}\n\n"

输出:


drop:[6]

drop:[1, 4, 1, 1, 88, 9]

drop:[]

代码2:drop()方法示例

# Ruby code for drop() method 
  
# declaring array 
a = ["abc", "nil", "dog"] 
  
# declaring array 
b = ["cow", nil, "dog"] 
  
# declaring array 
c = ["cat", nil, nil] 
  
# drop 
puts "drop:#{a.drop(2)}\n\n"
  
# drop 
puts "drop:#{b.drop(0)}\n\n"
  
# drop 
puts "drop:#{c.drop(3)}\n\n"

输出:

drop:["dog"]

drop:["cow", nil, "dog"]

drop:[]


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注:本文由纯净天空筛选整理自mayank5326大神的英文原创作品 Ruby | Array drop() operation。非经特殊声明,原始代码版权归原作者所有,本译文未经允许或授权,请勿转载或复制。