How to renew the \rightarrow command?

Question

I am playing and exploring the renewcommand and newcommand right now, and I tried to do:

\renewcommand{\rightarrow}{\mathlarger{\mathlarger{\rightarrow}}}

I get it to work with the newcommand like this:

\newcommand{\largerightarrow}{\mathlarger{\mathlarger{\rightarrow}}}

However, the newcommand would require longer name, and it would be nicer in this case to use the standard command rightarrow.

I've noticed that I haven't used the original size of the $\rightarrow$ once yet, therefor I'd like to have that renewcommand in my template for my math documents.

Answer 1

Renewing a command with the command itself in its definition won't work because TeX doesn't remember what the command was previously as you're redefining it.

The code you're looking for is something along the lines of:

\documentclass[12pt, letterpaper]{article}
\usepackage{relsize}

\let\RightArrow\rightarrow
\renewcommand\rightarrow{\mathlarger{\mathlarger{\RightArrow}}}

\begin{document}
    4 colours + 13card/colour $\rightarrow$ 52 cards
\end{document}