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1.2.4
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triplePFirst
triple
PFirst
@
JvmStatic
fun
<
A
,
B
,
C
,
R
>
triplePFirst
(
)
:
PLens
<
Triple
<
A
,
B
,
C
>
,
Triple
<
R
,
B
,
C
>
,
A
,
R
>
(
source
)
PLens
to focus into the first value of a
Triple