I want two text blocks in a horizontal row. In the middle between them, there should be an arrow pointing from left to right.
This is what I currently have:
As you see, the arrow is not in the middle between the two text blocks. That's something I want to achieve.
Right now I'm using minipages with fixed width to achieve the result above.
\begin{minipage}{.2\textwidth}
\begin{verbatim}
X := 3
Y := Z * W
Q := X + Y
\end{verbatim}
\end{minipage}
%
\begin{minipage}{.2\textwidth}
\centering $\Rightarrow$
\end{minipage}
%
\begin{minipage}{.2\textwidth}
\begin{verbatim}
X := 3
Y := Z * W
Q := 3 + Y
\end{verbatim}
\end{minipage}
But with that solution I would have to adjust the absolute width of the minipages until the text fits inside. That's not a clean solution though, because when I change the text size (or anything else related to the font) everything will break.
Is there a clean solution to horizontally align the two text blocks, with an arrow in the middle between them, and with adjustable whitespace between the blocks and the arrow?