红宝石 |数组 take()函数

Array#take() : take()是一个 Array 类方法，它返回数组中元素的数量。

Syntax: Array.take()

Parameter: Array

Return: the number of elements in the array.

示例 #1：

# Ruby code for take() method
  
# declaring array
a = [18, 22, 33, nil, 5, 6]
  
# declaring array
b = [1, 4, 1, 1, 88, 9]
  
# declaring array
c = [18, 22, 50, 6]
  
# take method example
puts "take() method form : #{a.take(2)}\n\n"
  
puts "take() method form : #{b.take(1)}\n\n"
  
puts "take() method form : #{c.take(3)}\n\n"

输出 ：

take() method form : [18, 22]

take() method form : [1]

take() method form : [18, 22, 50]

示例 #2：

# Ruby code for take() method
  
# declaring array
a = ["abc", "nil", "dog"]
  
# declaring array
c = ["cat", nil]
  
# declaring array
b = ["cow", nil, "dog"]
  
# take method example
puts "take() method form : #{a.take(2)}\n\n"
  
puts "take() method form : #{b.take(1)}\n\n"
  
puts "take() method form : #{c.take(3)}\n\n"

输出 ：

take() method form : ["abc", "nil"]

take() method form : ["cow"]

take() method form : ["cat", nil]