How to write a function like Print(...)

Tom Sasson 2016.07.15 09:42

Hi,

I want to know how the Print(...) function was coded, because I want to write such a function myself,

which takes infinite number of parameters.

Does anyone know?

Stanislav Korotky 2016.07.15 10:29 #1

You can't do that directly in MQL. But you can write a function with several last parameters having default value. Also you may define multiple functions with the same name but different parameter list.

Tom Sasson 2016.07.15 11:14 #2

Stanislav Korotky:
You can't do that directly in MQL. But you can write a function with several last parameters having default value. Also you may define multiple functions with the same name but different parameter list.

Thanks!

Martin Bittencourt 2022.12.02 01:54 #3

Stanislav Korotky #:
You can't do that directly in MQL. But you can write a function with several last parameters having default value. Also you may define multiple functions with the same name but different parameter list.

Hi,

as of 2022, is this still true? :/ Giving my attempts, it seems so, but I may be doing it wrong.

Fernando Carreiro 2022.12.02 10:25 #4

Martin Bittencourt #: as of 2022, is this still true? :/ Giving my attempts, it seems so, but I may be doing it wrong.

There have been no changes and it still holds true.

William Roeder 2022.12.02 12:46 #5

There are no variadic functions.

See the following:
          Define Variadic Arguments in Functions? - Bollinger Bands, BB - Expert Advisors and Automated Trading - MQL5 programming forum (2018)
          Function with variable number of parameters - MQL4 programming forum (2018)
          Different Indicators Parameters to iCustom - MQL5 programming forum (2020)

Does mql5 support indefinite is it possible to Combine Indicators

Martin Bittencourt 2022.12.04 22:46 #6

Fernando Carreiro #:
There have been no changes and it still holds true.

Sad. I hope someday they will add this possibility :T

William Roeder #:

There are no variadic functions.

See the following:
          Define Variadic Arguments in Functions? - Bollinger Bands, BB - Expert Advisors and Automated Trading - MQL5 programming forum (2018)
          Function with variable number of parameters - MQL4 programming forum (2018)
          Different Indicators Parameters to iCustom - MQL5 programming forum (2020)

Thanks!