Umi — API References - v1.3.0
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umi-options
isNone
Function isNone
isNone
<
T
>
(
option
:
Option
<
T
>
)
:
option
is
None
Whether the given
Option
is a
None
.
Type Parameters
T
Parameters
option
:
Option
<
T
>
Returns
option
is
None
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Umi — API References - v1.3.0
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Whether the given Option is a None.