Re: Behavior of boolen test of strings

String tests as boolean are "bad form".
The "fgllint" code checker explicitly checks this and reports it as a warning.

$fgllint test_string
  LINT : test_string.4gl Line 5 (Severity:6) NONINTBOOL
Converting non-integer to boolean


I think its probably best to fix your code.


On 13 June 2016 at 08:55, Gjerstad, Øyvind <[email protected]> wrote:
> We have some Informix 4gl code which uses character strings in boolean tests, i.e:
> if char_variable then
>   # something
> end if
>
> And the expected result is that when the string has any value, it evaluates to true. This works differently in Aubit 4gl. Apparently this expression is only true in Aubit when the character string can be converted to a number different from 0.
> Is this something we just have to live with, and change our programs, or is it a possiblity to change the behaviour in Aubit to work the same way as Informix?
>
>
> Test program:
> main
>   define p_tst_var varchar(255)
>   let p_tst_var = arg_val(1)
>
>   if p_tst_var then
>      display "All is well"
>   else
>      display "Not so good"
>   end if
> end main
> --
>
>
> Øyvind Gjerstad
> Systemkonsulent
>
>
> M +47 909 41 485
> [email protected]<mailto:[email protected]>
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