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$!
Packages
base
deepseq
(
$!
)
:: (a -> b) -> a -> b
base
Prelude
Strict (call-by-value) application, defined in terms of
seq
.
(
$!
!)
:: NFData a => (a -> b) -> a -> b
deepseq
Control.DeepSeq
the deep analogue of
$!
. In the expression f $!! x, x is fully evaluated before the function f is applied to it.