📜  红宝石 |数组映射!()操作

📅  最后修改于: 2022-05-13 01:54:37.305000             🧑  作者: Mango

红宝石 |数组映射!()操作

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 : #{a.map! {|num| num > 10 }}\n\n"

输出 :

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

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