Beamer overlay specification and tcblistings

Question

I have a beamer slide with several code snippets formatted using tcblisting and displayed using tcb raster blocks. I would like to reveal the tcblisting blocks one at a time, but I haven't been able to get the overlay specification right.

Here's the Beamer frame:

\begin{frame}[fragile=singleslide]
  \begin{ccodeblock}{C Source}
    long plus(long x, long y);

    void sumstore(long x, long y, long *dest)
    {
      long t = plus(x, y);
      *dest = t;
    }
  \end{ccodeblock}
  \begin{tcbraster}[raster columns=2, raster equal height]
    \begin{gascodeblock}{Assembly Output (x86-64)}
      sumstore:
        pushq   %rbx
        movq    %rdx, %rbx
        call    plus
        movq    %rax, (%rbx)
        popq    %rbx
        ret
    \end{gascodeblock}
    \begin{verbatimcodeblock}{Machine Code}
      0x53 0x48 0x89 0xd3 0xe8
      0xf2 0xff 0xff 0xff 0x48
      0x89 0x03 0x5b 0xc3
    \end{verbatimcodeblock}
  \end{tcbraster}
\end{frame}

The ccodeblock, gascodeblock, and verbatimcodeblock are defined using \newtcblisting. I would like to have:

• ccodeblock on all slides
• gascodeblock on <2->
• verbatimcodeblock on <3->

I have tried using \only, \onlyenv, etc., but end up with the overlay specifications (e.g., <2->) showing up in the typeset output.

thanks,
tom.

Answer 1

I don't want to guess how your custom tcblistings are defined, so I just took some random code from the tcolorbox manual.

Simply using \pause works fine if the frame option fragile=singleslide is replaced by fragile -- which makes sense, as you want to have fragile content on multiples slides.

\documentclass[11pt]{beamer}

\usepackage[listings]{tcolorbox}

\begin{document}
\begin{frame}[fragile]
  \begin{tcblisting}{colback=red!5!white,colframe=red!75!black}
    long plus(long x, long y);

    void sumstore(long x, long y, long *dest)
    {
      long t = plus(x, y);
      *dest = t;
    }
  \end{tcblisting}
  \pause
  \begin{tcblisting}{colback=red!5!white,colframe=red!75!black}
    sumstore:
      pushq   %rbx
      movq    %rdx, %rbx
      call    plus
      movq    %rax, (%rbx)
      popq    %rbx
      ret
  \end{tcblisting}
\end{frame}


\end{document}