fancyeq.sty

\ProvidesPackage{fancyeq}

\usepackage{amsmath}
%\usepackage{polytable}

\newcommand{\figrule}{\begin{center}\hrule\end{center}}

\newcommand{\lastexpr}[1]{&\quad #1}
\newcommand{\expr}[1]{\lastexpr{#1}\\}
\newcommand{\hinte}[2]{&#1\qquad\text{\{\quad\ #2 \quad\}}\\}
\newcommand{\hint}[1]{\hinte{=}{#1}}
\newcommand{\set}[1]{\{\,#1\,\}}
\newcommand{\betared}{\underset{\beta}{\Rightarrow}}
\newcommand{\betaeqv}{\underset{\beta}{\Leftrightarrow}}
  
\newcommand{\haskellCaption}{}
\newcommand{\haskellLabel}{}

\newenvironment{haskell}[2]
  {
    \renewcommand{\haskellCaption}{#1}
    \renewcommand{\haskellLabel}{#2}
    \begin{figure}[h]
    \figrule
    \[
    \begin{array}{ll}
  }
  {
    \end{array}
    \]
    \caption{\haskellCaption}
    \label{\haskellLabel}
    \figrule
    \end{figure}
  }
 
\newcommand{\fancyfigCaption}{}
\newcommand{\fancyfigLabel}{}  
  
\newenvironment{fancyeq}[3]
  {
    \renewcommand{\fancyfigCaption}{#1}
    \renewcommand{\fancyfigLabel}{#2}
    \begin{figure}[h]
    \figrule
    \[
    \begin{array}{#3}
  }
  {
    \end{array}
    \]
    \caption{\fancyfigCaption}
    \label{\fancyfigLabel}
    \figrule
    \end{figure}
  }
  
  
\newenvironment{fancyfig}[2]
  {
    \renewcommand{\fancyfigCaption}{#1}
    \renewcommand{\fancyfigLabel}{#2}
    \begin{figure}[!ht]
    \figrule
  }
  {
    \caption{\fancyfigCaption}
    \label{\fancyfigLabel}
    \figrule
    \end{figure}
  }
\newcommand{\hseq}[1]{\begin{array}{lcl}#1\end{array}}
\newcommand{\hsdef}[1]{\begin{array}{l}#1\end{array}}

  
\newcommand{\hslist}[1]{[\mskip1.5mu #1 \mskip1.5mu]}
\newcommand{\bind}{\gg\!\!=}
\newcommand{\mappend}{<\!>}
\newcommand{\append}{\makebox[15pt]{+\kern-0.5ex+}}
  
%\newenvironment{fancyfig}[2]
%{\begin{figure}[h]\vspace{5pt}
%\renewcommand{\fancyfigCaption}{#1}
%\renewcommand{\fancyfigLabel}{#2}}
%{\vspace{-17pt}\caption{\fancyfigCaption}\label{\fancyfigLabel}\end{figure}}