Copyright	(c) 2009 2010 2011 Bryan O'Sullivan
License	BSD-style
Maintainer	bos@serpentine.com
Stability	experimental
Portability	portable
Safe Haskell	None
Language	Haskell2010

Data.Text.Internal.Unsafe

Description

Warning : this is an internal module, and does not have a stable API or name. Functions in this module may not check or enforce preconditions expected by public modules. Use at your own risk!

A module containing unsafe operations, for very very careful use in heavily tested code.

Synopsis

inlineInterleaveST :: ST s a -> ST s a
inlinePerformIO :: IO a -> a

Documentation

inlineInterleaveST :: ST s a -> ST s a Source #

Allow an ST computation to be deferred lazily. When passed an action of type ST s a , the action will only be performed when the value of a is demanded.

This function is identical to the normal unsafeInterleaveST, but is inlined and hence faster.

Note : This operation is highly unsafe, as it can introduce externally visible non-determinism into an ST action.

inlinePerformIO :: IO a -> a Source #

Just like unsafePerformIO, but we inline it. Big performance gains as it exposes lots of things to further inlining. Very unsafe . In particular, you should do no memory allocation inside an inlinePerformIO block. On Hugs this is just unsafePerformIO .