From: Samir Benmendil <me@rmz.io>
Date: Sun, 14 Jan 2018 00:19:18 +0000 (+0000)
Subject: Parse Atoms which start with a letter or symbol
X-Git-Url: https://git.rmz.io/my-scheme.git/commitdiff_plain/d06e8ae01efc00ea0eb6f0bed346032b004aca57?hp=d06e8ae01efc00ea0eb6f0bed346032b004aca57

Parse Atoms which start with a letter or symbol

`<|>` is a Parser combinator, the choice operator. It will try the first
parser, if it doesn't match anything, try the second parser, and so on.

`a:b` creates a list from `a` and `b`. Another possibility would be to
use `[a] ++ b`, where a new list with a single element is created `[a]`
and concatenated with `++`
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