☰

使用清單建立一個假標籤引用

tag-icon • tag-icon macros lists expl3 xparse grouping
使用清單建立一個假標籤引用

\label在解決了我關於和 的使用的疑問之後，再次大家好\ref。閱讀評論，我注意到在許多場合不需要使用引用系統，只需要與這些相關的值。

我的想法是不使用輔助文件（在某些情況下需要很多文件，.auxTeX 中不存在文件中的附加模式），在內存中保存練習的簡短答案列表，因此從一個文件複製並粘貼到另一個文件時不需要進行重大修改修改（僅更改清單的引用）。

這是文件（有效）

% !file: test.tex
% arara: pdflatex
\documentclass{article}%
\usepackage{amsmath}
\usepackage{multicol}
\usepackage{enumitem}
\usepackage{tcolorbox}
\tcbuselibrary{many}
\usepackage{pgffor}

% Set key for multicols in enumitem
\SetEnumitemKey{columns}{before=\begin{multicols}{#1},after=\end{multicols}}%

% Some definition
\newtheorem{theorem}{Theorem}
\newtheorem{exercise}[theorem]{Exercise}

% from https://tex.stackexchange.com/a/215571/7832
\ExplSyntaxOn
\NewDocumentCommand{\storedata}{mm}
  {
   \bcp_store_data:nn { #1 } { #2 }
  }

\NewDocumentCommand{\appenddata}{mm}
 {
  \bcp_append_data:nn { #1 } { #2 }
 }

\DeclareExpandableDocumentCommand{\getdata}{O{1}m}
 {
  \bcp_get_data:nn { #1 } { #2 }
 }

\cs_new_protected:Npn \bcp_store_data:nn #1 #2
 {
  % create the sequence if it doesn't exist or clear it if it exists
  \seq_if_exist:cTF { l_bcp_data_#1_seq }
   { \seq_new:c { l_bcp_data_#1_seq } }
   { \seq_clear:c { l_bcp_data_#1_seq } }
  % append the items
  \__bcp_append_data:nn { #1 } { #2 }
 }

\cs_new_protected:Npn \bcp_append_data:nn #1 #2
 {
  % create the sequence if it doesn't exist, do nothing if it exists
  \seq_if_exist:cF { l_bcp_data_#1_seq }
   { \seq_new:c { l_bcp_data_#1_seq } }
  % append the items
  \__bcp_append_data:nn { #1 } { #2 }
 }

\cs_new_protected:Npn \__bcp_append_data:nn #1 #2
 {
  % append items one at a time
  \tl_map_inline:nn { #2 }
   {
    \seq_put_right:cn { l_bcp_data_#1_seq } { ##1 }
   }
 }

\cs_new:Npn \bcp_get_data:nn #1 #2
 {
  % retrieve the requested item
  \seq_item:cn { l_bcp_data_#2_seq } { #1 }
 }
\ExplSyntaxOff

\begin{document}
\section{Exercices}

\begin{exercise}
Factoring next expression:
\end{exercise}

\begin{enumerate}
\item $a^{2}-b^{2}$
\item $x^{2}-2x+1$ 
\item $3x+3y+3z$
\item $3x+3y-6z$
\end{enumerate}
% save in list exe:1
\appenddata{exe:1}{{$\left(a-b\right)\left(a+b\right)$}}
\appenddata{exe:1}{{$\left(x-1\right)^{2}$}}
\appenddata{exe:1}{{$3x+3y+3z$}}
\appenddata{exe:1}{{$3\left(x+y-2z\right)$}}

\begin{exercise}
Solve:
\end{exercise}
\begin{enumerate}
\item $2x+3=5$
\item $5x-2=7$
\item $4-3x=5$
\end{enumerate}

% save in list exe:2
\appenddata{exe:2}{{$1$}}
\appenddata{exe:2}{{$\dfrac{9}{5}$}}
\appenddata{exe:2}{{$-\dfrac{1}{3}$}}

\section{Answer}
% #1 : pass to tcolorbox
% #2 : name
% #3 : list
% #4 : maxvalue
% #5 : columns
\DeclareTotalTColorBox{\answer}{O{} m m m O{4}}
{ colback=white,size=small,top=0mm,bottom=1.5mm, left=0mm,width=\columnwidth,title filled,%
  fontupper=\small,fonttitle=\small\sffamily,%
    adjusted title={#2},center title,#1}
  {% 
  \begin{enumerate}[columns=#5,leftmargin=15pt,labelsep=3pt,font=\footnotesize,nosep,widest=25,]%
  \small
  \setlength{\columnsep}{0pt} 
   \foreach \x in {1,...,#4} {
    \item \getdata[\x]{#3}%
    }
  \end{enumerate}
  }%
\answer{Exercise 1}{exe:1}{4}
\answer{Exercise 2}{exe:2}{3}[3]
\end{document}

現在我的問題來了，我從中取得的宏在命令中儲存字串數組僅適用於本機模式，如果將其寫入環境內，則它僅存在於該環境中而不存在於環境之外，也就是說，我將無法在環境之外存取它。例如：

% save list in enumerate 
\begin{enumerate}
\item $a^{2}-b^{2}$ \appenddata{exe:1}{{$\left(a-b\right)\left(a+b\right)$}}
\item $x^{2}-2x+1$ \appenddata{exe:1}{{$\left(x-1\right)^{2}$}}
\item $3x+3y+3z$ \appenddata{exe:1}{{$3x+3y+3z$}}
\item $3x+3y-6z$ \appenddata{exe:1}{{$3\left(x+y-2z\right)$}}
\end{enumerate}

我的想法是它在枚舉環境中工作，然後訪問它們之外的值。我已經嘗試過這個：

% !file: test.tex
% arara: pdflatex
\documentclass{article}%
\usepackage{amsmath}
\usepackage{multicol}
\usepackage{enumitem}
\usepackage{tcolorbox}
\tcbuselibrary{many}
\usepackage{pgffor}

% Set key for multicols in enumitem
\SetEnumitemKey{columns}{before=\begin{multicols}{#1},after=\end{multicols}}%

% Some definition
\newtheorem{theorem}{Theorem}
\newtheorem{exercise}[theorem]{Exercise}

% from https://tex.stackexchange.com/a/215571/7832
\ExplSyntaxOn
\NewDocumentCommand{\storedata}{mm}
  {
   \bcp_store_data:nn { #1 } { #2 }
  }

\NewDocumentCommand{\appenddata}{mm}
 {
  \bcp_append_data:nn { #1 } { #2 }
 }

\DeclareExpandableDocumentCommand{\getdata}{O{1}m}
 {
  \bcp_get_data:nn { #1 } { #2 }
 }

\cs_new_protected:Npn \bcp_store_data:nn #1 #2
 {
  % create the sequence if it doesn't exist or clear it if it exists
  \seq_if_exist:cTF { l_bcp_data_#1_seq }
   { \seq_new:c { l_bcp_data_#1_seq } }
   { \seq_clear:c { l_bcp_data_#1_seq } }
  % append the items
  \__bcp_append_data:nn { #1 } { #2 }
 }

\cs_new_protected:Npn \bcp_append_data:nn #1 #2
 {
  % create the sequence if it doesn't exist, do nothing if it exists
  \seq_if_exist:cF { l_bcp_data_#1_seq }
   { \seq_new:c { l_bcp_data_#1_seq } }
  % append the items
  \__bcp_append_data:nn { #1 } { #2 }
 }

\cs_new_protected:Npn \__bcp_append_data:nn #1 #2
 {
  % append items one at a time
  \tl_map_inline:nn { #2 }
   {
    \seq_put_right:cn { l_bcp_data_#1_seq } { ##1 }
   }
 }

\cs_new:Npn \bcp_get_data:nn #1 #2
 {
  % retrieve the requested item
  \seq_item:cn { l_bcp_data_#2_seq } { #1 }
 }
\ExplSyntaxOff

% Create a environment to encapsulate answer
\NewDocumentEnvironment{myenumerate}{m}{%
% Command to save answer
\NewDocumentCommand\sol{m}{%
    \appenddata{#1}{{##1}}% 
    }% close \sol
}%
{}% close myenumerate
\begin{document}
\section{Exercices}

\begin{exercise}
Factoring next expression:
\end{exercise}

\begin{myenumerate}{exe:1}
\begin{enumerate}
\item $a^{2}-b^{2}$ \sol{$\left(a-b\right)\left(a+b\right)$}
\item $x^{2}-2x+1$  \sol{$\left(x-1\right)^{2}$}
\item $3x+3y+3z$    \sol{$3x+3y+3z$}
\item $3x+3y-6z$    \sol{$3\left(x+y-2z\right)$}
\end{enumerate}
\end{myenumerate}

\begin{exercise}
Solve:
\end{exercise}

\begin{myenumerate}{exe:2}
\begin{enumerate}
\item $2x+3=5$ \sol{$1$}
\item $5x-2=7$ \sol{$\dfrac{9}{5}$}
\item $4-3x=5$ \sol{$-\dfrac{1}{3}$}
\end{enumerate}
\end{myenumerate}

\section{Answer}
% #1 : pass to tcolorbox
% #2 : name
% #3 : list
% #4 : maxvalue default: lenght of list
% #5 : columns
\DeclareTotalTColorBox{\answer}{O{} m m m O{4}}
{ colback=white,size=small,top=0mm,bottom=1.5mm, left=0mm,width=\columnwidth,title filled,%
  fontupper=\small,fonttitle=\small\sffamily,%
    adjusted title={#2},center title,#1}
  {% 
  \begin{enumerate}[columns=#5,leftmargin=15pt,labelsep=3pt,font=\footnotesize,nosep,widest=25,]%
  \small
  \setlength{\columnsep}{0pt} 
   \foreach \x in {1,...,#4} {
    \item \getdata[\x]{#3}%
    }
  \end{enumerate}
  }%
\answer{Exercise 1}{exe:1}{4}
\answer{Exercise 2}{exe:2}{3}[3]
\end{document}

也盡量加入一個key來enumitem避免寫新的環境

\SetEnumitemKey{reflist}{before=\storedata{#1}{}}%

但我嘗試過的選項都沒有成功，所以，這裡出現了一個大問題：如何修改\appendata|\storedata以使它們在全球範圍內工作？ \appendata會像\label和\getdata會一樣\ref，當然只有值和無.aux檔案（或兩次運行）。

答案1

為了全域儲存數據，\seq_gput_right:Nn必須應用（及其變體），否則在enumerate環境形成的群組結束後，本地保存最終會遺失。

\seq_put_right:Nn但僅在組內有效。

\documentclass{article}%
\usepackage{amsmath}
\usepackage{multicol}
\usepackage{enumitem}
\usepackage{tcolorbox}
\tcbuselibrary{many}
\usepackage{pgffor}

% Set key for multicols in enumitem
\SetEnumitemKey{columns}{before=\begin{multicols}{#1},after=\end{multicols}}%

% Some definition
\newtheorem{theorem}{Theorem}
\newtheorem{exercise}[theorem]{Exercise}

% from https://tex.stackexchange.com/a/215571/7832
\ExplSyntaxOn

% Reporter macro, is expandable
\cs_new:Npn \reportnumberofseqitems #1{%
 \seq_count:c {l_bcp_data_#1_seq}%
}


\NewDocumentCommand{\storedata}{mm}
  {
   \bcp_store_data:nn { #1 } { #2 }
  }

\NewDocumentCommand{\appenddata}{mm}
 {
  \bcp_append_data:nn { #1 } { #2 }
 }

\DeclareExpandableDocumentCommand{\getdata}{O{1}m}
 {
  \bcp_get_data:nn { #1 } { #2 }
 }

\cs_new_protected:Npn \bcp_store_data:nn #1 #2
 {
  % create the sequence if it doesn't exist or clear it if it exists
  \seq_if_exist:cTF { l_bcp_data_#1_seq }
   { \seq_new:c { l_bcp_data_#1_seq } }
   { \seq_gclear:c { l_bcp_data_#1_seq } }
  % append the items
  \__bcp_append_data:nn { #1 } { #2 }
 }

\cs_new_protected:Npn \bcp_append_data:nn #1 #2
 {
  % create the sequence if it doesn't exist, do nothing if it exists
  \seq_if_exist:cF { l_bcp_data_#1_seq }
   { \seq_new:c { l_bcp_data_#1_seq } }
  % append the items
  \__bcp_append_data:nn { #1 } { #2 }
 }

\cs_new_protected:Npn \__bcp_append_data:nn #1 #2
 {
  % append items one at a time
  \tl_map_inline:nn { #2 }
   {
    \seq_gput_right:cn { l_bcp_data_#1_seq } { ##1 }
   }
 }

\cs_new:Npn \bcp_get_data:nn #1 #2
 {
  % retrieve the requested item
  \seq_item:cn { l_bcp_data_#2_seq } { #1 }
 }
\ExplSyntaxOff

% Create a environment to encapsulate answer
\NewDocumentEnvironment{myenumerate}{m}{%
% Command to save answer
\NewDocumentCommand\sol{m}{%
    \appenddata{#1}{{##1}}% 
    }% close \sol
}%
{}% close myenumerate
\begin{document}
\section{Exercices}

\begin{exercise}
Factoring next expression:
\end{exercise}

\begin{myenumerate}{exe:1}
\begin{enumerate}
\item $a^{2}-b^{2}$ \sol{$\left(a-b\right)\left(a+b\right)$}
\item $x^{2}-2x+1$  \sol{$\left(x-1\right)^{2}$}
\item $3x+3y+3z$    \sol{$3x+3y+3z$}
\item $3x+3y-6z$    \sol{$3\left(x+y-2z\right)$}
\end{enumerate}
\end{myenumerate}

\begin{exercise}
Solve:
\end{exercise}

\begin{myenumerate}{exe:2}
\begin{enumerate}
\item $2x+3=5$ \sol{$1$}
\item $5x-2=7$ \sol{$\dfrac{9}{5}$}
\item $4-3x=5$ \sol{$-\dfrac{1}{3}$}
\end{enumerate}
\end{myenumerate}

There are \reportnumberofseqitems{exe:1} items in exe:1 and     \reportnumberofseqitems{exe:2} items in exe:2

\section{Answer}
% #1 : pass to tcolorbox
% #2 : name
% #3 : list
% #4 : maxvalue default: lenght of list
% #5 : columns
\DeclareTotalTColorBox{\answer}{O{} m m m O{4}}
{ colback=white,size=small,top=0mm,bottom=1.5mm, left=0mm,width=\columnwidth,title filled,%
  fontupper=\small,fonttitle=\small\sffamily,%
    adjusted title={#2},center title,#1}
  {% 
  \begin{enumerate}[columns=#5,leftmargin=15pt,labelsep=3pt,font=\footnotesize,nosep,widest=25,]%
  \small
  \setlength{\columnsep}{0pt} 
   \foreach \x in {1,...,#4} {
    \item \getdata[\x]{#3}%
    }
  \end{enumerate}
  }%
\answer{Exercise 1}{exe:1}{4}
\answer{Exercise 2}{exe:2}{3}[3]
\end{document}

在此輸入影像描述

相關內容