Errors, bugs, questions - page 1877

[kaus_bonus]

kaus_bonus:

what is the time to clear the tester agent cache in MT5?

you asked and you answered))

I get that the cache clearing time is 6 min. after this time the temp folder of the tester agent is cleared, and then the data preparation goes on again.

this is ridiculous.

[fxsaber]

Sergey Dzyublik:
Please tell me if there are plans to add the use of template to union, so that you can do this:

Bypass - see how this is implemented in TypeToBytes.

[fxsaber]

Is the error correct in this case? How can it be bypassed without removing const?

struct STRUCT
{
  const MqlTick Data;
  
  STRUCT( MqlTick &Tick ) : Data(Tick) {} // 'Data' - constructor not defined
};

[fxsaber]

Forum on trading, automated trading systems and trading strategy testing

Bugs, bugs, questions

fxsaber, 2017.04.10 16:23

Creating unnecessary template overloads that cause compile errors.

template <typename T>
T Func()
{
  T Res;
  
  return(Res);
}

template <typename T>
void Func( T& Value )
{
  T Res = (MqlTick)Value;
}

void OnStart()
{
  Func<string>(); // без этой строки компилируется
  
  MqlTick Tick;
  
  Func(Tick);
}

The compiler is trying to create a

void Func( string& );

1595 - never fixed.

[fxsaber]

Adviser

input int i = 0;

void OnInit() {}

Optimiser parameters 1595

Brute-optimisation took 5.5 minutes, which is incorrect, to say the least.

All logs are in the attached file. Please sign off whether or not it's reproducible.

[Sergey Dzyublik]

fxsaber:

1595 - never fixed.

Remove the explicit Struct cast and everything works.

template <typename T>
T Func(){
  T Res;
  return(Res);
}

template <typename T>
void Func( T& Value ){
  T Res = Value;
}

void OnStart()
{
  Func<string>(); 
  
  MqlTick Tick;
  Func(Tick);
}

[fxsaber]

Sergey Dzyublik:

Remove the explicit Struct cast and everything works.

The developers have confirmed the error in the SD. Look carefully, the cast is not there.

[Sergey Dzyublik]

fxsaber:
The developers have confirmed the error in the SD. Look carefully, the casting is not there.

template <typename T>
void Func( T& Value )
{
  T Res = (MqlTick) Value;
}

What then is this operation called?

[TheXpert]

Sergey Dzyublik:

Remove the explicit Struct cast and everything works.

Two questions.

1. what does this code log?

2. how does cast relate to the bug of selecting the correct function overload?

[Sergey Dzyublik]

On MT5 1595 32bit works all to perfection (Win7 64bit):

template <typename T>
T Func(){
  T Res;
  Print (__FUNCTION__);
  return(Res);
}

template <typename T>
void Func( T& Value ){
  Print (__FUNCTION__);
  T Res = Value;
}

void OnStart()
{
  Func<string>(); 
  
  MqlTick Tick;
  Func(Tick);
}

Result:
2017.04.26 14:51:14.834 WebTest (EURUSD,H4) Func<string>
2017.04.26 14:51:14.836 WebTest (EURUSD,H4) Func<MqlTick>

No bug with function selection, how can it relate to the fact that there is none))