Mailing List Archive: Re: Words with no value error

[REBOL] Re: Words with no value error

From: SunandaDH:aol at: 8-Jan-2004 12:19


Mauro:

> I have a question about the " Script Error: xxx has no value" problem.
>
>  I have seen that there's no way to trap such an error, which is not a
>  syntax one.
>
>  'value? does not work, nor does 'error?.

Maybe I misunderstand your question. But I can, and regularly do, capture
such errors:

>> xxx
** Script Error: xxx has no value
** Near: xxx

>> if error? capture-error: try [xxx] [print mold disarm capture-error]

make object! [
    code: 300
    type: 'script
    id: 'no-value
    arg1: 'xxx
    arg2: none
    arg3: none
    near: [xxx]
    where: none
]

Sunanda<