ivomarsan

let memoize = fn => {
  let cache = {};
  return (...args) => {
    let stringifiedArgs = JSON.stringify(args);
    let result = cache[stringifiedArgs] = cache[stringifiedArgs] || fn(...args);
    return result;
  };
};

let pureAdd = (x,y) => { return x + y }; // pure function

ivomarsan

***
Empresa: TAM	Numero do voo: 3001	DI: 0	Tipo: N	Origem: SBEG	Destino: SBKP
Saida prevista: 10/02/14 10:10:10
Saida real: 10/02/14 10:10:10
Chegada prevista: 10/02/14 13:11:00
Chegada real: 10/02/14 13:11:00
Situacao: Realizado	Justificativa: --
***
***
Empresa: GOL	Numero do voo: 3098	DI: 0	Tipo: N	Origem: SBCG	Destino: SBBR

ivomarsan

const findByFieldRange = field => (list, range) =>
  list.filter(obj => obj[field] >= range[0] && obj[field] <= range[1]);

const getAllByField = field => list => list.filter(obj => obj[field]);

const findIn = list => ({
  by: field => ({
    between: (start, end = start) =>
      findByFieldRange(field)(list, [start, end]),
    getAll: () => getAllByField(field)(list),