Re: Have you noticed how nil is a separate type?

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Subject: Re: Have you noticed how nil is a separate type?
From: Tim Hill <drtimhill@...>
Date: Tue, 21 Feb 2017 12:53:15 -0800

> I think I'm digressing here but ...
> 
> I use `assert` when the error is one of programming (i.e. it should
> never happen, but unfortunately does) and `error` is one of the
> user of the packages (i.e. bad input).
> 

+1

References:
- Have you noticed how nil is a separate type?, Soni L.
- Re: Have you noticed how nil is a separate type?, Martin
- Re: Have you noticed how nil is a separate type?, Dirk Laurie

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