PerfectHashByLeo/Test/Test.mq5

//+------------------------------------------------------------------+
//|                                                         Test.mq5 |
//|                                  Copyright 2026, Niquel Mendoza. |
//|                                            https://www.mql5.com/ |
//+------------------------------------------------------------------+
#property copyright "Copyright 2026, Niquel Mendoza."
#property link      "https://www.mql5.com/"
#property version   "1.00"
#property strict

//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
#include "..\\Src\\Main.mqh"

//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
class CHasherFnv164 : public TSN::CPerfectHashHasher<string>
 {
public:
                     CHasherFnv164(void) {}
                    ~CHasherFnv164(void) {}

  //---
  ulong              Hash(const string& v) override final
   {
    ulong h = 0xcbf29ce484222325;
    for(uint i = 0; i < v.Length(); i++)
     {
      h ^= (uchar)v[i];
      h *= 0x100000001b3;
     }
    return h;
   }
 };


//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
class CHasherFinal : public TSN::CPerfectHashHasherWSeed<string>
 {
public:
                     CHasherFinal(void) {}
                    ~CHasherFinal(void) {}

  //---
  __forceinline ulong Hash(const string& v, const ulong seed) override final
   {
    ulong h = 0xcbf29ce484222325;
    for(uint i = 0; i < v.Length(); i++)
     {
      h ^= (uchar)v[i];
      h *= 0x100000001b3;
     }
    return h ^ seed;
   }
 };

//+------------------------------------------------------------------+
//| Script program start function                                    |
//+------------------------------------------------------------------+
void OnStart()
 {
//---
  const string keys[5] =
   {
    "hola",
    "valor",
    "si",
    "como",
    "no"
   };

  const double val[5] =
   {
    10.0,
    20.0,
    30.0,
    40.0,
    50.0
   };

//---
  TSN::CPerfectHashByLeo<string> pf;
  pf.Hasher0(new CHasherFnv164());
  pf.Hasher1(new CHasherFinal());
  pf.DeleteHashers(true);
  pf.InitAlg(4, 12);
  
//--- Inicio  
  ulong seed[];
  double value[];
  ArrayResize(value, pf.m_final_table_size); // Ajustamos
 // ArrayInitialize(value, 0.00); // Valor por defecto invalido
  pf.RunWValue(keys, val, seed, value);
  
  
// Check  
  ArrayPrint(value);

//---
  const string key = "no";
  int bucket = int(pf.Hasher0().Hash(key) % pf.m_buckets_size);
  ulong d = seed[bucket];
  int final_index = int(pf.Hasher1().Hash(key, d) % pf.m_final_table_size);
  Print(value[final_index]);
 }
//+------------------------------------------------------------------+