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acme-smuggler: Smuggle arbitrary values in ()

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Properties

Versions 0.1.0.0, 0.1.0.1, 1.1.1.0
Change log None available
Dependencies base (>=4.7 && <5) [details]
License BSD-3-Clause
Copyright 2016 Ben Clifford
Author Ben Clifford <benc@hawaga.org.uk>
Maintainer Ben Clifford <benc@hawaga.org.uk>
Category ACME
Home page https://github.com/benclifford/acme-smuggler
Source repo head: git clone https://github.com/benclifford/acme-smuggler
Uploaded by benc at 2016-12-11T11:10:39Z

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Readme for acme-smuggler-0.1.0.0

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ACME Smuggler

The () type has only one value, also called () with no internal structure.

Nevertheless, acme-smuggler allows you to smuggle arbitrary values into () and discover them later:

> x = smuggle "hello"
> :t x
x :: ()

> y = smuggle (7 :: Integer)
> :t y
y :: ()

> discover x :: Maybe String
Just "hello"
> discover y :: Maybe Integer
Just 7
> discover x :: Maybe Integer
Nothing