Errors, bugs, questions - page 1273

[[Deleted]]

A100:

Compilation error

i and j are not available in derived class D, although declared as public and protected respectively.

In MQL, protected becomes private after public inheritance. Therefore, j is not visible in D-class.

[A100]

zaskok:
In MQL, protected becomes private after public inheritance. Therefore j is not visible in D-class.

Wrong.

class L {
protected:           //protected
        int i;
};

class M : public L { //после public-наследования
        int f() { return ( i ); }
};

class N : public M {
        int g() { return ( i ); } //нормально
};

does not become private - no compilation errors

[[Deleted]]

A100:

Wrong.

does not become private - no compile errors

Yes, it doesn't. Didn't bother to check it.

[Alexander]

A100:

Compilation error

i and j are not available in the derived class D, although declared as public and protected respectively

Thanks for the reference, we will check

[A100]

Controversial result - character constants as part of the string

void OnStart()
{
        Print( "\x32" ); //результат: 2   - нормально
        Print( "\62" );  //результат: \62 - спорно, ожидалось: 2
        Print( "\\62" ); //результат: \62 - нормально
}

If a single slash, it was expected to be followed by a decimal charactercode(if one exists)

https://www.mql5.com/ru/docs/basis/types/integer/symbolconstants

decimal code

d

'\d'

decimal number from 0 to 65535

void OnStart()
{
        Print( "\x2660"  ); //результат: ♠
        Print( "\\x2660" ); //результат: \x2660
 
}

Here the single slash and double slash are differentiated, and above it is not

[Vadim Pyankov]

HistorySelect() Has maximum minute accuracy? discrepancies occur if a trade is closed and a new trade is opened on the same minute

[Renat Fatkhullin]

vadynik:
Does HistorySelect() have a maximum minute accuracy?

No, the accuracy is seconds. Set the end date well in advance, not TimeCurrent().

[Sergey Dzyublik]

Can you tell me, please,
For the SendMail function there is definitely no limit on the frequency of sending messages?
Because for some reason it seems that before (half a year ago) there were mentions about the limitation in the help description, similar to those for SendNotification.
Thanks.

[Alexandr Bryzgalov]

ALXIMIKS:

Can you tell me, please,
For the SendMail function there is definitely no limit on the frequency of sending messages?
Because for some reason it seems that before (half a year ago) there were mentions about the limitation in the help description, similar to those for SendNotification.
Thanks.

If you send emails too often, the mail server may block sending them.

Because spammer, ddoser, etc.

[Vadim Pyankov]

Reverse owl, when you open an order closing a previous trade with a larger volume, the position remains the same, because only the direction is changing, as written in the help - Reverse position does not change the position ID, then why does the time of opening POSITION_TIME ?