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Module

x/hkts/option.ts>isNone

Functional programming tools: option, either, task, state, optics, etc.
Latest
variable isNone
import { isNone } from "https://deno.land/x/hkts@v0.0.52/option.ts";

Tests wether an Option is None. Can be used as a predicate.

type

<A>(m: Option<A>) => m is None