~= is:exact

(~=) :: (Epsilon a, Lattice a, Subtractive a) => a -> a -> Bool
numhask NumHask NumHask.Algebra.Metric
About equal operator. 
>>> (1.0 + epsilon) ~= (1.0 :: Double)
True
(~=) :: Text -> Text -> Refinement
clay Clay Clay.Selector
Filter elements based on the presence of a certain attribute that have the specified value contained in a space separated list.
(~=) :: ToJSON ι => Text -> ι -> Pair
mustache Text.Mustache Text.Mustache.Types
Map keys to values that provide a ToJSON instance Recommended in conjunction with the OverloadedStrings extension.
(~=) :: MonadState a m => Lens a b -> b -> m ()
data-lens-light Data.Lens.Light
Set a value using a lens into state
(~=) :: Thread n -> BlockedOn -> Bool
dejafu Test.DejaFu.Conc.Internal.Threading
Determine if a thread is blocked in a certain way.
(~=) :: PhoneticsRepresentationPL -> PhoneticsRepresentationPLX -> Bool
aftovolio Aftovolio.General.Base
Partial equivalence that is used to find the appropriate PhoneticsRepresentationPL for the class of PhoneticsRepresentationPLX values.
(~=) :: Path a -> Path b -> Bool
lca Data.LCA.Online Data.LCA.Online.Monoidal Data.LCA.Online.Naive
O(1) Compare to see if two trees have the same root key
(~=) :: Double -> Double -> Bool
math-extras Math.Extras.Double
(~=) is equivalent to fuzzyEq 1.0e-6.