Check if symbol exists

[Dua Yong Rew]

Hi,

Any functions that can check if symbol exists for trading? 

[Alain Verleyen]

doshur:

Hi,

Any functions that can check if symbol exists for trading? 

SymbolSelect()

[Dua Yong Rew]

angevoyageur:
SymbolSelect()

thanks

[Ivan Petkow]

Not yet mentioned in the MQL Reference, but 'SymbolExist' is already highlighted as a valid Keyword in the MetaEditor (build 1970)

bool SymbolExist(const string symbol_name, bool &is_custom)

[ycomp]

sounds a bit extreme to select a symbol just to verify it exists...

void OnStart()

  {

//---

Print(IsSymbol("EURUSD"));

Print(IsSymbol("I Ain't No Symbol, Biyatch!"));

   

  }

//+------------------------------------------------------------------+

bool IsSymbol(string symbol) {

    SymbolInfoDouble(symbol, SYMBOL_BID);

    return GetLastError() != ERR_MARKET_UNKNOWN_SYMBOL;

}

[Dua Yong Rew]

   int i = StringSplit(strBasket, StringGetCharacter(",", 0), Basket);

   if(i > 0)
   {
      for(int x = 0; x < i; x++)
      {
         if(!SymbolExist(Basket[x], false)) return(INIT_PARAMETERS_INCORRECT);
      }
   }
   else
   {
      return(INIT_PARAMETERS_INCORRECT);
   }

'false' - variable expected JPY Basket.mq5 32 37

how to use symbolexist properly?

the input is not a bool?

Thanks in advance

[Lucas Tavares]

Release note 14, from version Built 2005 ( 21 FEB 2019)

New SYMBOL_EXIST property in the ENUM_SYMBOL_INFO_INTEGER enumeration, means that the symbol under this name exists.