id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc	revision
250	Extensions for the interface of paths	Peter Kovacs	Alpar Juttner	" 1. Path structures have a function `nth(int n)` for getting the ''n'' th arc of the path. I suggest `operator[]` as an alias for this function.

 2. It would be nice to have `source()` and `target()` functions for paths. But it raise questions.
   - Is it necessary that all the arcs in a path are directed in the same direction? Or we could store oppositely directed arc in a path as well? How should we define the source/target? Would the source node be equal to `gr.source(path.front())` and the target to `gr.target(path.back())`? 
   - Should paths store source and target nodes explicitly? It would make it possible to handle paths of zero length (with a specified starting node).
"	enhancement	new	major	LEMON 1.1 release	core	hg main