📜  红宝石 |数组映射()函数

📅  最后修改于: 2022-05-13 01:54:58.027000             🧑  作者: Mango

红宝石 |数组映射()函数

Array#map() : map()是一个 Array 类方法,它返回一个包含块返回值的新数组。

示例 #1:

# Ruby code for map() method
  
# declaring array
a = [18, 22, 33, 3, 5, 6]
  
# declaring array
b = [1, 4, 1, 1, 88, 9]
  
# declaring array
c = [18, 22, 3, 3, 50, 6]
  
# map
puts "map method : #{a.map {|num| num > 10 }}\n\n"
  
# map
puts "map method : #{b.map {|x| x.odd? }}\n\n"

输出 :

map method : [true, true, true, false, false, false]

map method : [true, false, true, true, false, true]

示例 #2:

# Ruby code for map() method
  
# declaring array
a = [18, 22, 33, 3, 5, 6]
  
# declaring array
b = [1, 4, 1, 1, 88, 9]
  
# declaring array
c = [18, 22, 3, 3, 53, 6]
  
# map
puts "map method : #{c.map {|num| num > 10 }}\n\n"
  
# map
puts "map method : #{c.map {|num| num.even? }}\n\n"

输出 :

map method : [true, true, false, false, true, false]

map method : [true, true, false, false, false, true]