空列表环境

Question

我为简历字段创建了命令。这是所需结果的简化示例：

目前，我必须创建两个单独的命令来执行此操作，一个带有\begin{itemize}，另一个不带有，否则我会收到错误：

! LaTeX Error: Something's wrong--perhaps a missing \item.

这是因为\begin{itemize}第二部分中的环境是空的。

\begin{itemize}问题：是否有允许环境为空的包或使用方法？例如：

\begin{itemize}
    % This environment is empty.
\end{itemize}

梅威瑟：

\documentclass[pdftex, 10pt, letterpaper, oneside]{memoir}

\usepackage{color}
\usepackage[table]{xcolor}
\usepackage{enumitem}

\newcommand{\narrowColumn}[0]{0.25\textwidth}
\newcommand{\wideColumn}[0]{0.75\textwidth}
\newcommand{\tabularEndSpacing}[0]{0.375 cm}

% I would like something like this for everything.
\newcommand{\withItemize}[5]{
    \begin{tabular}{r | l}
        \begin{minipage}[c]{\narrowColumn}
            #1
        \end{minipage}
        &
        \begin{minipage}[c]{\wideColumn}
            {\bfseries\scshape#2}, {\itshape#3}\\
            #4
            \begin{itemize}[nosep]
                #5
            \end{itemize}
        \end{minipage}
    \end{tabular}\\[\tabularEndSpacing]
}

% However, I am forced to create a second command that does not use itemize.
\newcommand{\withoutItemize}[5]{
    \begin{tabular}{r | l}
        \begin{minipage}[c]{\narrowColumn}
            #1
        \end{minipage}
        &
        \begin{minipage}[c]{\wideColumn}
            {\bfseries\scshape#2}, {\itshape#3}\\
            #4
            #5
        \end{minipage}
    \end{tabular}\\[\tabularEndSpacing]
}

\begin{document}
\thispagestyle{empty}

% This works fine.
\withItemize{Jun 2013---Present}{Company Name}{Company Location}{Position at Company}{
    \item Comment 1
    \item Comment 2
    \item Comment 3
}

% This does not work.
%\withItemize{Jun 2013---Present}{School Name}{School Location}{Degree}{}

% Using the second command: This works fine.
\withoutItemize{Jun 2013---Present}{School Name}{School Location}{Degree}{}


\end{document}

Answer 1

测试是否#5为空。如果是，则不执行任何操作，否则打印itemize环境。

\newcommand{\myentry}[5]{%
  \begin{tabular}{r | l}
  \begin{minipage}[c]{\narrowColumn}
  #1
  \end{minipage}
  &
  \begin{minipage}[c]{\wideColumn}
  \textbf{#2}, \textit{#3}\\
  #4
  \if\relax\detokenize{#5}\relax\else
    \begin{itemize}[nosep]
    #5
    \end{itemize}
  \fi
  \end{minipage}
  \end{tabular}\\[\tabularEndSpacing]%
}

我已经删除了\scshape因为字体通常没有粗体小写变体。使用一强调的属性：粗体或​​小型大写。