chainIn ()
chain
In
<
T
,
U
>
(
f
)
:
(
(
x
)
=>
Opt
<
U
[]
>
)
Type Parameters
T
U
Parameters
f
:
(
(
a
)
=>
U
[]
)
(
a
)
:
U
[]
Parameters
a
:
T
Returns
U
[]
Returns
(
(
x
)
=>
Opt
<
U
[]
>
)
(
x
)
:
Opt
<
U
[]
>
Parameters
x
:
Opt
<
T
[]
>
Returns
Opt
<
U
[]
>
See
Opt.chainIn
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See
Opt.chainIn