Errors, bugs, questions - page 715

[Rashid Umarov]

Yedelkin:

Wouldn't these constants work?

Another value has been added there:

Identifier	Description	Property type
MQL5_PROGRAM_TYPE	mql5program_type	ENUM_PROGRAM_TYPE
MQL5_DLLS_ALLOWED	Permission to use the DLL for thecurrent program running	bool
MQL5_TRADE_ALLOWED	Permissionto trade for this running program	bool
MQL5_DEBUGGING	Sign of a running program working in debug mode	bool
MQL5_TESTING	Sign of running a program in the tester	bool
MQL5_OPTIMIZATION	Sign of running a program during optimization	bool
MQL5_VISUAL_MODE	Sign of running a program in a visual testing mode	bool
MQL5_LICENSE_TYPE	A license type for an EX5 module. The license refers to the EX5 module, from which a request is made using Mql5InfoInteger(MQL5_LICENSE_TYPE).	ENUM_LICENSE_TYPE

[Yedelkin]

Rosh:

Another value has been added there:

Yes, I have the January Handbook.

[Denis Kirichenko]

Yedelkin:

Would these constants work?

Yes, that's it! Danke schön!

[Vladimir Gomonov]

mql5:
Yes, you're right, it's a compiler error, we'll fix it.

Wow! // I thought you were going to make the compiler throw an error.

Thank you, if this syntax works, that would be fine.

--

Actually, thank you all very much. The language is blooming. The minor bugs and titbits, I think, are temporary.

[sion]

void der()
{
  int app;
  for(int i=0;i<100;i++)
  {app++;}
  Print("app=",app);
}
void OnInit()
{
EventKillTimer();
EventSetTimer(1000);
}
void OnTick()
{
}
void OnTimer()
{
der();
}

On the way out

2011.07.28 19:53:20 app=2439.

2011.07.28 20:10:00 app=2139.

2011.07.28 20:26:40 app=2239.

int app; - should not automatically assign 0?

[Andrey Dik]

sion:

int app; - shouldn't it automatically assign 0?

No. You have to initialise it yourself.

[sion]

joo:
No. You have to initialise it yourself.

It's hard for beginners when unknown numbers start coming out) But it makes sense, if the app in global variables is not a problem.

[Vladimir Gomonov]

sion:
It's hard for beginners when unknown digits begin to appear) But there is sense in it, if you want to output app to global variables, it seems there is no problem.

Global variables do not have to be initialised automatically either. You are probably just "lucky". Lucky in quotes, because such luck is fraught with subsequent collapse of the roof with leftist claims to developers, such as "yesterday it worked and today it doesn't. Your platform is unstable...!".

;-)

There is a sense in it - it takes time for initialization.

If the user cares about time and there is no need to initialize during declaration (the required value will be assigned at the right time anyway), then super-caring compiler may waste time on initialization for nothing. That's why it's a common practice in all serious languages - initialization is up to the programmer. Which is good and correct. Just get used to it.

Guaranteed zeros are only in the heads of beginners :) // I like meaningful ambiguities.

;)

[fellow]

Why does Print(1/2); write 0 ? Does it round to a whole number?

[Andrey Dik]

fellow:
Why does Print(1/2); write 0 ?

Because!

You should do this if you hate real numbers:

Print((double)1/(double)2);