mitaki28

// requires TypeScript 2.1 or higher

export abstract class Lens<T, U> {
    abstract get: (obj: T) => U;
    abstract set: (value: U) => (obj: T) => T;
    then = <V>(lens: Lens<U, V>) => new ComposedLens(this, lens);
    thenKey = <L extends keyof U>(key: L): Lens<T, U[L]> => this.then(new ObjectLens<U, L>(key));
    modify = (f: (value: U) => U) => (obj: T) => this.set(f(this.get(obj)))(obj);
}
export class IdLens<T> extends Lens<T, T> {

tkawachi

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hexx

:- module ml.
:- interface.
:- import_module io.
:- pred main(io::di, io::uo) is cc_multi.
:- implementation.
:- import_module bool, int, string, list, pair, assoc_list, lex, regex.

main(!IO) :-
    Lexer  = lex.init(lexemes, lex.read_from_stdin, ignore(space)),
    State0 = lex.start(Lexer, !.IO),