foldIn ()
fold
In
<
T
,
R
>
(
f
)
:
(
(
initial
)
=>
(
(
x
)
=>
Opt
<
R
>
)
)
Type Parameters
T
R
Parameters
f
:
(
(
acc
,
x
)
=>
R
)
(
acc
,
x
)
:
R
Parameters
acc
:
R
x
:
T
Returns
R
Returns
(
(
initial
)
=>
(
(
x
)
=>
Opt
<
R
>
)
)
(
initial
)
:
(
(
x
)
=>
Opt
<
R
>
)
Parameters
initial
:
R
Returns
(
(
x
)
=>
Opt
<
R
>
)
(
x
)
:
Opt
<
R
>
Parameters
x
:
Opt
<
T
[]
>
Returns
Opt
<
R
>
See
Opt.foldIn
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See
Opt.foldIn