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@rauchg
rauchg / README.md
Last active January 6, 2024 07:19
require-from-twitter
@s-panferov
s-panferov / option.ts
Created November 30, 2014 12:15
Option and Result types from Rust in TypeScript
interface Option<T> {
map <U>(fn: (a: T) => U): Option<U>;
isSome(): boolean;
isNone(): boolean;
isSomeAnd(fn: (a: T) => boolean): boolean;
isNoneAnd(fn: () => boolean): boolean;
unwrap(): T;
unwrapOr(def: T): T;
unwrapOrElse(f: () => T): T;
map<U>(f: (a: T) => U): Option<U>;