红宝石 |数组 take_while()函数

Array#take_while() : take_while()是一个 Array 类方法，它将元素返回到块，直到块返回 nil 或 false。

Syntax: Array.take_while()

Parameter: Array

Return: elements to the block until the block returns nil or false.

示例 #1：

# Ruby code for take_while() 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]
  
# take_while
puts "take_while method : #{a.take_while {|num| num > 10 }}\n\n"
  
# take_while
puts "take_while method : #{b.take_while {|x| x.odd? }}\n\n"

输出 ：

take_while method : [18, 22, 33]

take_while method : [1]

示例 #2：

# Ruby code for take_while() 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]
  
# take_while
puts "take_while method : #{c.take_while {|num| num > 10 }}\n\n"
  
# take_while
puts "take_while method : #{c.take_while {|num| num.even? }}\n\n"

输出 ：

take_while method : [18, 22]

take_while method : [18, 22]