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Friends and Neighbors => Weimer Republic (WeiDU.org) => WeiDU => Topic started by: Galactygon on April 11, 2017, 03:20:09 AM

Title: Functions and arrays
Post by: Galactygon on April 11, 2017, 03:20:09 AM

How exactly are arrays remembered when generated within a function?

I have an example of:

Code: [Select]

DEFINE_ACTION_FUNCTION "PRINT_TEST"
STR_VAR print_list = ""
done_deal = "DEFAULT"
RET done_deal
BEGIN
PRINT "%print_list%"
ACTION_PHP_EACH "%print_list%" AS one => two BEGIN
PRINT "%one% => %two%"
END

ACTION_DEFINE_ASSOCIATIVE_ARRAY "%done_deal%" BEGIN
U => V
W => X
Y => Z
END
END

ACTION_DEFINE_ASSOCIATIVE_ARRAY "TEST" BEGIN
A => B
C => D
E => F
END

LAF "PRINT_TEST" STR_VAR print_list = "TEST" RET done_deal END

PRINT "%done_deal%"
ACTION_PHP_EACH "%done_deal%" AS three => four BEGIN
PRINT "%three% => %four%"
END

This will print the contents of array "TEST" (i.e. "TEST" %WNL% A => B %WNL% C => D %WNL% E => F) but the array "DEFAULT" (U => V, W => X, Y => Z) will not be printed, only the letters "DEFAULT".

Is there a way to return arrays generated within a function like any other variable?

Title: Re: Functions and arrays
Post by: Wisp on April 12, 2017, 01:31:53 PM

Arrays go out of scope with the function, just like variables (arrays are implemented as variables). You cannot return arrays. You could would not work, regardless, however, as you are defining an array rooted in "DEFAULT", but are returning the value of the variable called "done_deal" (and the value is "DEFAULT" because the function never assigns to "done_deal" so the default value is retained).

Title: Re: Functions and arrays
Post by: Galactygon on April 12, 2017, 01:50:54 PM

Thanks for the reply. I guess I could try inlining and reincluding stuff if I get desperate. I have settled with macros for now which work for the stuff I want to do.