slides/master-header.tex at master · hkntutoring/slides · GitHub

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\documentclass{beamer}

\usetheme{metropolis}

\usepackage{xparse}
\usepackage{xfrac}
\usepackage{xcolor}
\usepackage{cancel}
\usepackage{amssymb}
\usepackage{amsmath}
\usepackage{graphicx}
\usepackage{spalign}
\usepackage{multirow}
\usetikzlibrary{automata, shapes, arrows, positioning}

\definecolor{links}{HTML}{2A1B81}
\hypersetup{colorlinks,linkcolor=,urlcolor=links}

% https://tex.stackexchange.com/questions/2233/whats-the-best-way-make-an-augmented-coefficient-matrix
\makeatletter
\renewcommand*\env@matrix[1][*\c@MaxMatrixCols c]{%
  \hskip -\arraycolsep
  \let\@ifnextchar\new@ifnextchar
  \array{#1}}
\makeatother


% https://tex.stackexchange.com/questions/102069/make-a-heading-in-beamer
\newcommand\makeheader[1]{%
  \par\bigskip
  {\large\bfseries#1}\par\smallskip}


\ExplSyntaxOn
\NewDocumentCommand{\mat}{ O{b} m }
 {
  \strategy_matlabmatrix:nn { #1 } { #2 }
 }

\seq_new:N \l_strategy_rows_seq
\seq_new:N \l_strategy_a_row_seq
\tl_new:N \l_strategy_matrix_tl

\cs_new_protected:Npn \strategy_matlabmatrix:nn #1 #2
 {
  \tl_clear:N \l_strategy_matrix_tl
  \seq_set_split:Nnn \l_strategy_rows_seq { ; } { #2 }
  \seq_map_inline:Nn \l_strategy_rows_seq
   {
    \seq_set_split:Nnn \l_strategy_a_row_seq { ~ } { ##1 }
    \tl_put_right:Nx \l_strategy_matrix_tl { \seq_use:Nn \l_strategy_a_row_seq { & } }
    \tl_put_right:Nn \l_strategy_matrix_tl { \\ }
   }
  \begin{#1matrix}
  \tl_use:N \l_strategy_matrix_tl
  \end{#1matrix}
 }
\ExplSyntaxOff

\newenvironment{blueenv}{\only{\setbeamercolor{local structure}{fg=blue}}}{}