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Iterables
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Function first
first
<
V
>
(
it
:
Iterable
<
V
>
)
:
undefined
|
V
Return first value from an iterable, or
undefined
if no values are generated
Type Parameters
V
Parameters
it
:
Iterable
<
V
>
Returns
undefined
|
V
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Return first value from an iterable, or undefined if no values are generated