Refactoring used of map in Ruby

Overview

This is topic for practice in English, so Please don’t expect too much.
I used to write a each, when I just started ruby programming.
but I recently write map to refactor my source.
I write for that matter.

Version

ruby 2.3.1

comparison each with map

Let's comparison each with map.
This is the most pupuler way of writing which use each.

each

[1, 2, 3, 4, 5].each do |e|
  puts e
end

output

1
2
3
4
5

This is the most pupuler way of writing which use map.

map

[1, 2, 3, 4, 5].map{ |m| puts m }

map's output is same as each.

output

1
2
3
4
5

Refactoring used of map

This is bad smell, you should replace each with map.

each

hoge = []
[1, 2, 3, 4, 5].each_with_index do |e, i|
  hoge[i] = e * 100
end

This is code replaced with map.
It be elegant dosen't it?

map

hoge = [1, 2, 3, 4, 5].map{ |m| m * 100 }

I blieve if you use map, it will lead to be readable and reduce amount of your sorce.