memoized 1.0.0

Useful function wrappers for avoiding unnecessary computation. it makes the function return a memoized(cached) value.

Installing

dependencies:
  memoized:

import 'package:memoized/memoized.dart';

Usage

• Basic

  Iterable<int> numbers = 1.to(30000000);
  final calculateSum = (() => numbers.sum()).memo;
    
  print(time(calculateSum));
  print(time(calculateSum));  // It returns the memoized value.
  

• Update

  Iterable<int> numbers = 1.to(30000000);
  final calculateSum = (() => numbers.sum()).memo;
    
  numbers = 1.to(9043483);
  calculateSum.update();  // recomputed
  

• Lazy Update

  Iterable<int> numbers = 1.to(30000000);
  final calculateSum = (() => numbers.sum()).memo;
  print(calculateSum());
    
  numbers = 1.to(9043483);
  calculateSum.requestUpdate();  // not computed
    
  numbers = 1.to(45000000);
  calculateSum.requestUpdate();  // not computed
    
  final value = calculateSum()   // recomputed at this point.