Ruby Array assoc()用法及代码示例

Ruby中的assoc()函数用于搜索其第一个元素与该函数的索引进行比较的数组数组，如果找到匹配项，则返回包含的数组，否则返回nil或vacant。

用法： Array.assoc(Object)

Here Array is the array of arrays.

参数：
Object :它是一个与包含的数组的第一个元素进行比较的元素。

返回值：如果找到匹配项，则包含的数组否则将返回nil或vacant。

示例1:

# Initializing a array of elements 
Array1 = ["Alphabets", "a", "b", "c", "d", "e"] 
Array2 = ["Names", "gfg", "Geeks", "Geek", "GeeksforGeeks"] 
Array3 = ["City", "Kolkata", "Mumbai", "Delhi", "Patna"] 
  
# Creating an array of above arrays 
Array = [Array1, Array2, Array3] 
  
# Calling assoc() function 
A = Array.assoc("Alphabets") 
B = Array.assoc("City") 
C = Array.assoc("Names") 
  
# Printing the matched contained array 
puts "#{A}"
puts "#{B}"
puts "#{C}"

输出：

["Alphabets", "a", "b", "c", "d", "e"]
["City", "Kolkata", "Mumbai", "Delhi", "Patna"]
["Names", "gfg", "Geeks", "Geek", "GeeksforGeeks"]

示例2:

# Initializing a array of elements 
Array1 = ["Alphabets", "a", "b", "c", "d", "e"] 
Array2 = ["Names"] 
Array3 = "City"
  
# Creating an array of above arrays 
Array = [Array1, Array2, Array3] 
  
# Calling assoc() function 
A = Array.assoc("Alphabets") 
B = Array.assoc("City") 
C = Array.assoc("Names") 
  
# Printing the matched contained array 
puts "#{A}"
puts "#{B}"
puts "#{C}"

输出：

["Alphabets", "a", "b", "c", "d", "e"]

["Names"]

参考： https://devdocs.io/ruby~2.5/array#method-i-assoc

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注：本文由纯净天空筛选整理自Kanchan_Ray大神的英文原创作品 Ruby | Array assoc() function。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。