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extend ahk with custom built-in variables?
Posted: 27 Dec 2018, 08:01
by swagfag
i was wondering if there was a way to achieve the following:
whereby the variable actually does some computations in the background, so its not just a plain old var defined somewhere
basically like a function, but without the parens
Re: extend ahk with custom built-in variables? Topic is solved
Posted: 27 Dec 2018, 08:20
by Helgef
No
Re: extend ahk with custom built-in variables?
Posted: 27 Dec 2018, 08:49
by swagfag
oh well
thanks
Re: extend ahk with custom built-in variables?
Posted: 27 Dec 2018, 09:21
by jeeswg
- Can AutoHotkey_H do this?
- Anyhow, adding in A_ variables via C++ and compiling is not so difficult. Cheers.
AutoHotkey C++ Powerhouse: Introduction - AutoHotkey Community
https://autohotkey.com/boards/viewtopic ... 23&t=54394
- I thought about this as a feature request, however, it's ultimately just a function call minus 2 characters (parentheses), for an increased parsing burden. On the flipside, it would facilitate backporting future A_ variables. It could also allow read-only and special variables ...
- Adding Int / Str etc as special variables might be useful if this went through.
Disabling unquoted argument and return types for BIF_DllCall. by HelgeffegleH · Pull Request #121 · Lexikos/AutoHotkey_L · GitHub
https://github.com/Lexikos/AutoHotkey_L/pull/121
Re: extend ahk with custom built-in variables?
Posted: 27 Dec 2018, 09:25
by eqv
swagfag wrote: ↑27 Dec 2018, 08:01
i was wondering if there was a way to achieve the following:
whereby the variable actually does some computations in the background, so its not just a plain old var defined somewhere
basically like a function, but without the parens
Hello, if you don't mind putting a dot ("."), you can use classes (object-oriented, although I personally don't like) and put then in your library:
Code: Select all
Msgbox % A_.MyCustomBIV
Class A_ {
Static MyCustomBIV:=(A_Hour ":" A_Min ":" A_Sec)
}
Here is another example, with more stuff:
Code: Select all
Msgbox % EXAMPLE.VAR1
Msgbox % EXAMPLE.VAR2
Msgbox % EXAMPLE.VAR3
Class EXAMPLE {
Static VAR1:=(A_Hour ":" A_Min ":" A_Sec), VAR2:=(A_YYYY "/" A_MM "/" A_DD), VAR3:=FUNCTION()
} FUNCTION() {
Return, "Just a function example, you can do complex stuff."
}
To learn more about object oriented; check the documentation:
https://autohotkey.com/docs/Objects.htm#Custom_Classes
Greetings,
Re: extend ahk with custom built-in variables?
Posted: 27 Dec 2018, 09:44
by nnnik
In my opinikon A_ variables in general are bad practice and a bad idea.
The user cannot create their own A_ variables and using A. instead of A_ makes no difference (other than byref which is cancer anyways).
Re: extend ahk with custom built-in variables?
Posted: 27 Dec 2018, 09:54
by Helgef
@
eqv, remember that built in variables aren't super global, they are available
everywhere (except
a_args if I recall correctly), so in an assume local function you have to declare
global a_. BTW, use properties instead of external functions.
Anyways, you shouldn't name your variables something starting with
a_.
I agree
nnnik 
.
Cheers.
Re: extend ahk with custom built-in variables?
Posted: 28 Dec 2018, 03:22
by jeeswg
- Perhaps it is worth considering the AHK v2 String() function, which could be backported to AHK v1. String(var) would give a string for a Float/Integer/String, and would call var.ToString() for an object.
- Perhaps the Integer and Float functions could handle objects with ToInteger and ToFloat methods.
- Also, in theory, some functions could have improved handling for objects, e.g. in AHK v2 WinXXX functions check any objects for an Hwnd method.
- (I would prefix variables with 'vGbl' or possibly 'AX_', but not 'A_'.)