Topological Order (Dependency-first order)

Topological order ¹⁾ is a tree order algorithm.

Topologically is the mathematical term for dependency-first order.

For the following tree,

           h
        /  |  \
      /    |   \
    d      e    g
   /|\          |
  / | \         f
 a  b  c

• a Topological order would be h d e g a b c f