Computing the maximum width of two boxes

On occasion, one has cause to compare two boxes and compute the maximum of the two widths. If the two boxes are 0 and 2, then the standard way to do that is something like

\ifdim\wd0>\wd2
    \dimen0 \wd0
\else
    \dimen0 \wd2
\fi

Of course, this works perfectly well. But sometimes, you want something that's a little less easy to read. Thus, I propose

\dimen0 \wd\ifdim\wd0>\wd2 0 \else2 \fi

The spaces around the numbers are to keep TeX from reading more input looking for additional digits.