2

I would like to conditionally add text (for example, "- Answers") to my exercise sheet title based on the global solution/print option set in \xsimsetup.

My goal is to have the title change automatically when I toggle the option, without any manual edits. I have tried many conditionals in the documentation, such as \ExerciseParameterIfSetTF but couldn't manage to make it work. I think it just work inside exercise environment.

\documentclass{article}
\usepackage{xsim}

\xsimsetup{
    solution/print = true
}


\begin{document}
    

{\Huge My Awesome Exercise Sheet : \ExerciseParameterIfSetTF{solution}{print}{Answers}{ }}

\begin{exercise}[title=First Question]
    What is the result of $2+2$?
\end{exercise}

\begin{solution}
    The result is $4$.
\end{solution}

\end{document}
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1 Answer 1

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3

The option solution/print is stored per exercise type, with the default type being exercise. There is an internal command \xsim_if_solution_print:nTF{exercise type}{true}{false} that queries the option for the specified exercise type. You can write a wrapper command around this internal command, with exercise as the first argument.

In the code below I used exercise as the default value for an optional argument to the wrapper command. If you have a different exercise type then you can use that optional argument with the name of the exercise type.

MWE:

\documentclass{article}
\usepackage{xsim}

\xsimsetup{
    solution/print = true
}

\ExplSyntaxOn
\NewDocumentCommand\IfPrintSolutions{O{exercise}mm}{%
\xsim_if_solution_print:nTF {#1} {#2} {#3}
}
\ExplSyntaxOff

\begin{document}
    
{\LARGE My Awesome Exercise Sheet: \IfPrintSolutions{Answers}{No answers}}

\begin{exercise}[title=First Question]
    What is the result of $2+2$?
    \IfPrintSolutions{Answer below}{Answer yourself}
\end{exercise}

\begin{solution}
    \IfPrintSolutions{This is the answer}{This is not the answer}:
    the result is $4$.
\end{solution}

\end{document}

Result:

text shown for print=true

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4
  • Excellent, thank you very much. Is there an analogous command that is triggered based on the option exercise/print = true or false ? Commented Sep 24 at 13:28
  • 1
    @AymaneFihadi not directly, but as an untested first guess you might be able to use \bool_if:cTF {l__xsim_exercise_exercise_print_bool}{true}{false} inside of \ExplSyntaxOn. Commented Sep 24 at 13:44
  • Thanks again \NewDocumentCommand\IfPrintExercises{mm}{ \bool_if:cTF {l__xsim_exercise_exercise_print_bool} {#1} {#2} works perfectly. I just don't know how to integrate the optional parameter for the exercise type. Commented Sep 24 at 14:15
  • @AymaneFihadi I think \NewDocumentCommand\IfPrintExercises{O{exercise}mm}{ \bool_if:cTF {l__xsim_#1_exercise_print_bool} {#2} {#3} may work for that. Commented Sep 24 at 17:47

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