Ruby | Matrix column() function

Ruby | Matrix collect() function

Last Updated : 07 Jan, 2020

The collect() is an inbuilt method in Ruby returns the new matrix after performing the operation that is given in the block.

Syntax: mat1.collect{|el| operation}

Parameters: The function has the parameter as a block which is the operation which is performed on all elements.

Return Value: It returns the new matrix after performing the operation on all elements.

Example 1:

# Ruby program for collect() method in Matrix 
  
# Include matrix  
require "matrix"
  
# Initialize a matrix  
mat1 =  Matrix[[1, 21], [31, 18]]   
  
# Prints the value of mat1.collect 
# after multiplying all elements by 3  
puts  mat1.collect{|el| el*3} 

Output:

Matrix[[3, 63], [93, 54]]

Example 2:

# Ruby program for collect() method in Matrix 
  
# Include matrix  
require "matrix"
  
# Initialize a matrix  
mat1 = Matrix[[13, 1, 5], [12, 1, 5], [11, 2, 5]]   
  
# Prints the value of mat1.collect 
# after adding 20 to all the elements  
puts  mat1.collect{|el| el+20} 

Output:

Matrix[[33, 21, 25], [32, 21, 25], [31, 22, 25]]

Ruby | Matrix column() function

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