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arrow.optics
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PTraversal
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choice
choice
open
fun
<
U
,
V
>
choice
(
other
:
PTraversal
<
U
,
V
,
A
,
B
>
)
:
PTraversal
<
Either
<
S
,
U
>
,
Either
<
T
,
V
>
,
A
,
B
>
(
source
)