在表中创建日期序列

Question

我想创建一个以周为增量的日期序列，该序列应显示在表格环境中。

我一直在摆弄这个论坛上发布的代码片段（在 LaTeX 中生成日期序列) 使用 advdate 来实现此目的。但是，当您在表环境中使用这些命令时，日期不再递增。

这里你可以看到一个显示问题的最小工作示例。提前致谢！

\documentclass{article}
\usepackage{advdate}

\newif\iffirst
\newcommand{\pnext}{%
  \AdvanceDate[7]% Step 3 days ahead...
  \iffirst
    \AdvanceDate\global\firstfalse% ...maybe 4
  \else
    \global\firsttrue
  \fi
  \today
}

\begin{document}

\ThisYear{2015}\ThisMonth{3}\ThisDay{30}

%The output of the following sequence is correct:
\today\par
\pnext\par
\pnext\par
\pnext\par
\pnext\par
\pnext

%However, it no longer works when the date is used in a table environment.
\begin{table}[hbtp]
\centering
  \begin{tabular}{ll}
\today\\
\pnext\\
\pnext\\
\pnext\\
\pnext\\
  \end{tabular}
\end{table}

\end{document}

Answer 1

使用本质上相同的代码，但通过datenumber包，可以在表格中和表格外部正常工作。

\documentclass{article}
\usepackage{datenumber}
\newif\iffirst
\newcommand{\pnext}{%
    \addtocounter{datenumber}{3}%
    \iffirst
        \addtocounter{datenumber}{1}%
        \global\firstfalse
    \else
        \global\firsttrue
    \fi
    \setdatebynumber{\thedatenumber}%
    \datedate
}

\begin{document}

\setdatenumber{2015}{3}{30}
%The output of the following sequence is correct:
\datedate\par
\pnext\par
\pnext\par
\pnext\par
\pnext\par
\pnext\par


%And it’s also correct in a table
\setdatenumber{2015}{3}{30}
\firstfalse
\begin{table}[hbtp]
\centering
\begin{tabular}{l}
\datedate\\
\pnext\\
\pnext\\
\pnext\\
\pnext\\
\pnext
\end{tabular}
\end{table}

\end{document}