红宝石 |向量大小（）函数

size()是 Ruby 中的内置方法，返回向量中元素的数量

Syntax: vec1.size()

Parameters: The function accepts no parameter

Return Value: It returns the number of elements in the vector

示例 1 ：

# Ruby program for size() method in Vector
     
# Include matrix 
require "matrix"
     
# Initialize the vector
vec1 = Vector[1, 2, 3]
    
# Prints the size of vector
puts vec1.size()

输出：

3

示例 2 ：

# Ruby program for size() method in Vector
     
# Include matrix 
require "matrix"
     
# Initialize the vector
vec1 = Vector[1, 2, 3, 4, 5]
    
# Prints the size of vector
puts vec1.size()

输出：

5