保存箭头样式并重复使用

Question

假设我的tikzset定义包括：

  vector/.style={%
     decoration={markings, mark= at position 0.5 with {\arrow{Triangle[length=2.5mm, width=2mm]}}}, postaction={decorate}
  },

假设我需要在其他地方使用相同的箭头样式。我该如何定义一些箭头样式并在以后引用它？类似于（不起作用）：

\tikzset{%
myarrow/.style={
   \arrow{Triangle[length=2.5mm, width=2mm]}
},
vector/.style={%
     decoration={markings, mark= at position 0.5 with {myarrow}}, postaction={decorate}
  },
}

Answer 1

使用密钥处理程序/.tip：

\documentclass{standalone}
\usepackage{tikz}
\usetikzlibrary{arrows.meta,decorations.markings}
\tikzset{
  myarrow/.tip={Triangle[length=2.5mm, width=2mm]},
  vector/.style={
    decoration={markings, mark= at position 0.5 with {\arrow{myarrow}}}
  },
}
\begin{document}
\begin{tikzpicture}
  \draw[-myarrow](0,0)--(2,0);
  \draw[myarrow-{myarrow[red]}](0,-.25)--+(2,0);
  \draw[postaction={vector,decorate}](0,-.5)--+(2,0);
\end{tikzpicture}
\end{document}