how to fix? `[1, 10, 100].map(&:prod * 3)` in ruby

In Ruby, the method map is used to iterate over an array and transform each element based on a block of code specified by the user.

The code [1, 10, 100].map(&:prod * 3) has two issues.

First, &:prod is not a valid Ruby syntax. The &: syntax is used to convert a method name into a symbol, mainly when passing a method as a block. However, prod is not a valid method in the Array class.

Second, you cannot multiply an array directly by a number using * operator in Ruby. To fix this, you need to iterate over each element and multiply it by 3.

Here's the corrected code:

main.rb
[1, 10, 100].map { |num| num * 3 }
35 chars
2 lines

This will return a new array [3, 30, 300], which is the result of multiplying each element by 3.

Make sure to use the appropriate block syntax ({}) and the multiplication (*) operator to achieve the desired result.