[OS X TeX] ifthenelse and an empty value

[Ueliisa]

Thanks Maarten

I quickly tried your tip. But it works only with 3 parameters. I tried 
change parameter araoun and set the 4. as first or last  ...???
Can you help my again - hat I missunderstand?

\newcommand{\myacronym}[4][]{%
     \ifthenelse{\equal{#1}{}}%
     {\newacronym{#2}{#3}{name=#3~(#2),description=#4}}%
     {\newacronym[#4]{#4}{#1}{#2}{name=#2~(#1),description=#3}}%
}

OR

\newcommand{\myacronym}[4][]{%
     \ifthenelse{\equal{#1}{}}%
     {\newacronym{#2}{#3}{name=#3~(#2),description=#4}}%
     {\newacronym[#1]{#1}{#2}{#3}{name=#3~(#2),description=#2}}%
}


\myacronym{cmd}{ABC}{Alphanummeric}{TEST TEST TEST}
\myacronym{ABC}{Alphanummeric}{TEST TEST TEST}{cmd}

ueliisa



On 26.04.2005, at 18:14, Maarten Sneep wrote:

> On 26 apr 2005, at 16:54, Ueliisa wrote:
>
>> I try to make an \newcommand that could have 3 or 4 parameters.
>> With \ifthenelse I want check about is the 4. value set or not an 
>> then use another command set:
>>
>> \newcommand{\newcmd}[4]{\ifthenelse{#4={}}{#1 - #2 - #3}{#1 - #2 - #3 
>> - #4}
>
> Better use the optional parameter as discussed before:
>
> \newcommand{\newcmd}[4][]{%
>     \ifthenelse{\equal{#1}{}}%
>     {#2 - #3 - #4}%
>     {#1 - #2 - #3 - #4}%
> }
>
> Note that the first parameter is what you called as #4, and if 
> present, must be placed between square brackets:
>
> \newcmd[param4]{param 1}{param 2}{param 3}{param 4} or if param 4 
> isn't given: \newcmd{param 1}{param 2}{param 3}. Note that the 
> parameters shift!
>
> Maarten
>
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           & FAQ: http://latex.yauh.de/faq/
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