Hi Elliot,
Elliot Clifton schrieb:
> Hi,
>
> How can test whether a variable has been set? I couldn't find any
> reference to this in the wiki?
>
What do you mean by "set"?
I use
\doifnothing{\getvariable{foo}{bar}}
{foo:bar contains nothing.\par}%
\doifsomething{\getvariable{foo}{bar}}
{foo:bar contains something.\par}%
\doifelsenothing{\getvariable{foo}{bar}}
{foo:bar contains nothing.\par}
{foo:bar contains something.\par}%
to test, if a defined(!) variable contains something.
If you want to test if a variable is defined, you can use
\doifnotvariable{foo}{bar}
{foo:bar is undefined.\par}%
\doifvariable{foo}{bar}
{foo:bar is defined.\par}%
\doifelsevariable{foo}{bar}
{foo:bar is defined.\par}
{foo:bar is undefined.\par}%
Never used these macros, as I always define default values for my variables.
HTH, Peter
> TIA,
>
> Elliot
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If your question is of interest to others as well, please add an entry to the
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