case {1, 2, 3} do

{4, 5, 6} ->

IO.puts "This clause won't match"

{1, x, 3} ->

IO.puts "This clause will match and bind x to 2 in this clause"

_ ->

IO.puts "This clause would match any value"

end

# Using case to test values against patterns

defmodule Account do

def list_transactions(filename) do

case File.read(filename) do

{:ok, content}

when byte_size(content) > 10 -> "Content: #{content}"

{:ok, content} -> "Content: #{content}"

{:error, type} -> "Error: #{type}"

end

end

end