isevaluated: Check whether a value has been evaluated

[ data, ghc, library, mit ] [ Propose Tags ]

An IO action to check whether some value has been evaluated.

If isEvaluated returns True, evaluating it to weak-head normal form won't throw exceptions and take constant time.

Versions 0.1, 0.2, 0.3,,
Dependencies base (==4.*), vacuum (==1.0.*) [details]
License MIT
Copyright (c) 2009, 2010 Svein Ove Aas and Bertram Felgenhauer
Maintainer Bertram Felgenhauer <>
Category Data, GHC
Uploaded by BertramFelgenhauer at Sat Aug 14 18:04:45 UTC 2010
Distributions NixOS:
Downloads 1766 total (10 in the last 30 days)
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Status Docs not available [build log]
All reported builds failed as of 2016-12-29 [all 7 reports]
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  • Data
    • Data.IsEvaluated


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