Customize the look of the table of content of beamer theme Boadilla

Question

I want to get rid of the numbered circles in the table of content:

And have normal text, like "1. First Section" "1.1 First Subsection" and so on.

Here is a MWE:

\documentclass{beamer}

\usetheme{Boadilla}

\begin{document}

\begin{frame}
\tableofcontents
\end{frame}

\section{First Section}

\begin{frame}
Frame 1
\end{frame}

\subsection{First Subsection}

\begin{frame}
Frame 2
\end{frame}

\section{Second Section}

\begin{frame}
Frame 3
\end{frame}

\end{document}

Thank you for your help!

Answer 1

You can use the sections numbered and subsections numbered templates for the toc:

\documentclass{beamer}

\usetheme{Boadilla}

\setbeamertemplate{section in toc}[sections numbered]
\setbeamertemplate{subsection in toc}[subsections numbered]

\setbeamertemplate{subsubsection in toc}{%
    \leavevmode\normalsize\usebeamerfont{subsection in
    toc}\leftskip=2.5em\usebeamerfont{subsubsection in toc}%
  \rlap{\hskip-3em\inserttocsectionnumber.\inserttocsubsectionnumber.\inserttocsubsubsectionnumber}\inserttocsubsubsection\par}


\begin{document}

\begin{frame}
\tableofcontents
\end{frame}

\section{First Section}

\begin{frame}
Frame 1
\end{frame}

\subsection{First Subsection}

\subsubsection{subsubsection name}

\begin{frame}
Frame 2
\end{frame}

\section{Second Section}

\begin{frame}
Frame 3
\end{frame}

\end{document}