Commit 00d71323 authored by Andreas Klebinger's avatar Andreas Klebinger Committed by Ben Gamari

Add information about irrefutable pattern Syntax to XStrict.

This information was present in the ghc wiki but not the user guide.
[skip ci]

Test Plan: None

Reviewers: bgamari

Reviewed By: bgamari

Subscribers: RyanGlScott, rwbarton, thomie, carter

Differential Revision: https://phabricator.haskell.org/D4250
parent 6847c6bf
......@@ -12523,6 +12523,10 @@ optionally had by adding ``!`` in front of a variable.
Adding ``~`` in front of ``x`` gives the regular lazy behavior.
Turning patterns into irrefutable ones requires ``~(~p)`` or ``(~ ~p)`` when ``Strict`` is enabled.
- **Let/where bindings**
When the user writes ::
......
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