# FastCollectionsByLeo


### Generic
### Fast HashMap
```mql5
void OnStart()
 {
  CHashMapFast(string, int) map;
  map.Add("hola", 10);
  map.Add("cinco", 10);
  map.Add("My key:", 20);
  map.Add("Yo: ", 20);
 
  CHashMapFastIterator(string, int) it = map.BeginIteration();
  while(it.IsValid())
   {
    Print(it.Key(), " = ", it.Val());
    it.Next();
   }
 }
```

### Hash map benchmarks
- Access test over 100,000 iterations
- Converting `ENUM_TIMEFRAMES` (string) to integer
- Same PC used for all tests

| Class            | Time (microseconds, 100,000 iterations) |
|------------------|-------------------------------------------|
| **Perfect Hash** | ~1705                                     |
| **CHashMapFast** | 1925–1949                                 |
| **CDictSValue**  | 2438–2466                                 |
| **CHashMap**     | 8750–8827                                 |
| **Linear**       | 9818–9869                                 |

> Test in [Final.mq5](./Collections/Test/Final.mq5)