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Returning value from function in parameter
#1 Posted : Friday, December 16, 2016 8:26:23 AM(UTC)
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Hi Folks,

Is there way to return value from function in parameter? Is there some kind of reference or pointer to parameter available in code?

For example:


function hello(param1) {
        param1="HELLO WORLD\n";


local test = "HELLO\n";



Returns me "HELLO" instead of "HELLO WORLD".

Thanks for help!

#2 Posted : Saturday, December 17, 2016 3:44:00 PM(UTC)
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Tables and arrays (and classes/instances) are always references.
(Though strings are internally references too, they _resolve_ any changes so referencing is ineffective at the surface)
Hence, use tables or arrays for indirection:


function foo(param1,param2)
   param[0]="Hello world" ;
   param2.test<-"Hello world" ;

local text=["Hello"] ;
local text2={ test="Hello" ; }

print (text) ;  //prints "Hello"
print (text2) ;  //prints "Hello"
foo(text,text2) ;
print(text[0]) ; //prints "Hello world"
prin (text2.test) ; //prints "Hello world"

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