Errors, bugs, questions - page 2689

[Dmitri Custurov]

fxsaber:

Not needed. See Services.

Yeah, I haven't smoked them until now. Thanks for the idea.

[Stanislav Korotky]

Dmitri Custurov:

Web requests and sockets are understandable, but wss, for example, I understand it doesn't work.

This is a protocol - it has to be written in MQL on top of the socket API provided by the terminal. It can be "ripped off" from public implementations in other languages.

[Dmitri Custurov]

When EA sends an order, is there any way to catch this event from another EA and get the order data? No response from the server.

[Andrey Khatimlianskii]

Dmitri Custurov:
When EA sends an order, is there any way to catch this event from another EA and get the order data? No response from the server.

From the magazine.

[Dmitri Custurov]

Andrey Khatimlianskii:

From the magazine.

Yeah, it's a crutch. But it could work. (chuckles): Thank you.

[Aliaksandr Hryshyn]

Not good, I get an error:

void OnStart()
  {
   int my_num=4444;
   uchar uchar_array[];
   StructToCharArray(my_num,uchar_array,0);
  }

code generation error           1       1

Making a "crutch" for a simple situation is necessary :( .

[Nikolai Semko]

Aliaksandr Hryshyn:

Not good, I get an error:

You have to make a "crutch" for a simple situation :( .

There is no way int can be a structure. Correct error.

[Aliaksandr Hryshyn]

Nikolai Semko:

There is no way int can be a structure. Correct error.

Well, yes. It would just be logical to make it possible, for example, to add a similar function for simple types.

[fxsaber]

Aliaksandr Hryshyn:

Well, yes. It would just be logical to make it possible, for example, to add a similar function for simple types.

TypeToBytes does this uniformly.

[Nikolai Semko]

Aliaksandr Hryshyn:

Well, yes. It would just be logical to make it possible, for example, to add a similar function for simple types.

I don't see the logic in that.
for simple types, firstly, you can do it like this:

void OnStart()
  {
   struct Int {
   int i;};
   Int my_num={4444};
   uchar uchar_array[];
   StructToCharArray(my_num,uchar_array,0);
   for (int i=0;i<ArraySize(uchar_array);i++) printf("char[%d] = %d",i,uchar_array[i]);
  }

secondly, yes:

void OnStart()
  {
   union _int {
   int i;
   uchar c[sizeof(int)]; };
   _int _i;
   _i.i=4444;
   for (int i=0;i<sizeof(_int);i++) printf("char[%d] = %d",i,_i.c[i]);
  }

and it's not all crutches

result in both cases:

2020.03.31 12:58:11.353 Test_StructToCharArray (EURUSD,M10)     char[0] = 92 
2020.03.31 12:58:11.353 Test_StructToCharArray (EURUSD,M10)     char[1] = 17 
2020.03.31 12:58:11.353 Test_StructToCharArray (EURUSD,M10)     char[2] = 0
2020.03.31 12:58:11.353 Test_StructToCharArray (EURUSD,M10)     char[3] = 0

17*256+92=4444