d039744a5b
In the dfs code, flip edges so that `parent` means `from` and `spec` means `to` in the direction of traversal. This makes it slightly easier to write generic/composable code. For example when using visitors where one visitor reverses direction, and another only cares about accepting particular edges or not depending on whether the target node is seen before, it would be good if the second visitor didn't have to know whether the order was changed or not. |
||
|---|---|---|
| .. | ||
| spack | ||