Thanks for that!
mapLeft takes a function, which is why we provided makeError as the argument.
mapLeft
makeError
error does not exist unless you make exist by creating a variable from within a closure in mapLeft.
error
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Thanks for that!
mapLeft
takes a function, which is why we providedmakeError
as the argument.error
does not exist unless you make exist by creating a variable from within a closure inmapLeft
.