Ruby Array compact!()用法及代码示例

Array＃compact！ ()：紧凑！ ()是一个Array类方法，该方法会在从数组中删除所有“无”值元素(如果有)后返回数组。如果数组中没有nil值，它将返回nil值。

用法： Array.compact!()

参数：  Array to remove the 'nil' value from. 

返回： removes all the nil values from the array.  nil - if there is no nil value in the array

代码＃1：Compact！()方法的示例

# Ruby code for compact!() method 
# showing how to remove nil values 
  
# declaring array 
a = [18, 22, 33, nil, 5, 6] 
  
# declaring array 
b = [5, 4, 1, 88, 9] 
  
# declaring array 
c = [18, 22, nil, 40, 50, 6] 
  
# removing nil value from array 
puts "removing nil value:#{a.compact!}\n\n"
  
# removing nil value from array 
puts "removing nil value:#{b.compact!}\n\n"
  
# removing nil value from array 
puts "removing nil value:#{c.compact!}\n\n"

输出：

removing nil value:[18, 22, 33, 5, 6]

removing nil value:

removing nil value:[18, 22, 40, 50, 6]

代码2：Compact！()方法的示例

# Ruby code for compact!() method 
# showing how to remove nil values 
  
# declaring array 
a = ["abc", "nil", "dog"] 
  
# declaring array 
b = ["cow", nil, "dog"] 
  
# declaring array 
c = ["cat", nil, nil] 
  
# removing nil value from array 
puts "removing nil value:#{a.compact!}\n\n"
  
# removing nil value from array 
puts "removing nil value:#{b.compact!}\n\n"
  
# removing nil value from array 
puts "removing nil value:#{c.compact!}\n\n"

输出：

removing nil value:

removing nil value:["cow", "dog"]

removing nil value:["cat"]

相关用法

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 compact!() 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。