.&&.

Conjunction: p1 .&&. p2 passes if both p1 and p2 pass.
JS infix bit operators
Analogous to && in Bash Runs the second command only if the first one returns ExitSuccess
&& for patterns: the given identifier must match both subterms
The above type is a generalization for:
(.&&.) :: Signal Bool -> Signal Bool -> Signal Bool
It is a version of (&&) that returns a Signal of Bool
Conjunction of LexPredicates.
Intersect two version ranges.