From: Samir Benmendil <me@rmz.io>
Date: Sat, 13 Jan 2018 22:06:26 +0000 (+0000)
Subject: Print the sum of two arguments
X-Git-Url: https://git.rmz.io/my-scheme.git/commitdiff_plain/0742b9f77a6fe617f929e21e143e35cd6e3d3ed6?hp=0742b9f77a6fe617f929e21e143e35cd6e3d3ed6

Print the sum of two arguments

`read`'s type is defined as `read :: (Read a) => String -> a`, i.e.
`read` takes as `String` and returns an `a` (number?). I don't know what
`=>` means. (`(Read a)` is an instance of class Read ?)

`show`'s type is a bit more complicated it seems as it has multiple
instances for various types of input. But in essence it takes a type and
returns a `String`.
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