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Either<L, R>
leftMap<L2> method
leftMap<L2> method
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leftMap<
L2
>
method
Either
<
L2
,
R
>
leftMap
<
L2
>(
L2
f
(
L
l
)
)
Implementation
Either<L2, R> leftMap<L2>(L2 f(L l)) => fold((L l) => left(f(l)), right);
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Either<L, R>
leftMap<L2> method
Either class