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pipelined

hasFirst

hasFirst<A, B>(data): data is TheseFirst<A> | TheseBoth<A, B>

Defined in: Core/These.ts:86

Returns true if the These contains a first value (First or Both).

Type Parameters

Section titled “Type Parameters”

A

Section titled “A”

A

B

Section titled “B”

B

Parameters

Section titled “Parameters”

data

Section titled “data”

These<A, B>

Returns

Section titled “Returns”

data is TheseFirst<A> | TheseBoth<A, B>