String.ex

defmodule S do
 def main do
 do_stuff()
 end

 def do_stuff do
 my_str = "My Sentence"
 IO.puts("Length : #{String.length(my_str)}")
 longer_str = my_str <> " " <> "is longer"
 IO.puts("My ? #{String.contains?(my_str, "My")}")

 IO.puts("First: #{String.first(my_str)}")
 IO.puts("Index 4: #{String.at(my_str, 4)}")
 IO.puts("Sustring: #{String.slice(my_str, 3, 8)}")

 IO.inspect(String.split(longer_str, " "))

 IO.puts(String.reverse(longer_str))
 IO.puts(String.upcase(longer_str))
 IO.puts(String.downcase(longer_str))
 IO.puts(String.capitalize(longer_str))

 (4 * 10) |> IO.puts()
 end
end