LukeB:
Just a question on if there is a way to assign an array to a reference variable (Pointer) in MQL 4 language. I seem to always be working around this by sizing and copying array elements.
Example segments for an EA that does different things at different times on different days, so I have these time arrays detailing at what times an activity may be valid:
Just wondering if anyone has a good solution in MQL4 / am I missing something to make this work easily in the language.
Not sure I'm 100% following what you are trying to do . . . but couldn't you just use a 2D array where the first dimension was the day number ?
Just a question on if there is a way to assign an array to a reference variable (Pointer) in MQL 4 language. I seem to always be working around this by sizing and copying array elements.
Example segments for an EA that does different things at different times on different days, so I have these time arrays detailing at what times an activity may be valid:
Just wondering if anyone has a good solution in MQL4 / am I missing something to make this work easily in the language.
RaptorUK:
Not sure I'm 100% following what you are trying to do . . . but couldn't you just use a 2D array where the first dimension was the day number ?
Not sure I'm 100% following what you are trying to do . . . but couldn't you just use a 2D array where the first dimension was the day number ?
2D array is a potential solution for this specific example. But, you run into problems with the data types needing to be different in the different dimensions (int versus date-time), and the use of ArraySize() to step through elements in the array is less clear. You can send a reference to a function, I just haven't found a way to send one back to the caller. But, there is always a way.
LukeB: 2D array is a good solution - I just haven't found a way to send one back to the caller.
double ar[][2]; int nAr = Function(ar); : int Function(double& ar[][2]){ // Pass by reference ArrayResize(ar, 3) ar[2][1] = 0; return(3);
LukeB:
2D array is a potential solution for this specific example. But, you run into problems with the data types needing to be different in the different dimensions (int versus date-time), and the use of ArraySize() to step through elements in the array is less clear. You can send a reference to a function, I just haven't found a way to send one back to the caller. But, there is always a way.
Why do you need to ? just copy the correct array to a "CorrectDayArray" and work from that, would that solve your issue ?
2D array is a potential solution for this specific example. But, you run into problems with the data types needing to be different in the different dimensions (int versus date-time), and the use of ArraySize() to step through elements in the array is less clear. You can send a reference to a function, I just haven't found a way to send one back to the caller. But, there is always a way.
RaptorUK:
Why do you need to ? just copy the correct array to a "CorrectDayArray" and work from that, would that solve your issue ?
Why do you need to ? just copy the correct array to a "CorrectDayArray" and work from that, would that solve your issue ?
That works - as mentioned in the opening post: "I seem to always be working around this by sizing and copying array elements.".
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Example segments for an EA that does different things at different times on different days, so I have these time arrays detailing at what times an activity may be valid:
Just wondering if anyone has a good solution in MQL4 / am I missing something to make this work easily in the language.