[Lemon-user] Multi-source Dijkstra search

[Meir Goldenberg]

Hello,

I am making my first steps with Lemon and currently have two questions:

1. Is there a way to initialize Dijkstra search with multiple
roots/sources? (I find it difficult to believe that there isn't, but the
documentation seems to talk only about single-source).

2. ListDigraph provides an iterator to explore the outgoing arcs of a node.
Sometimes however, I need to quickly get an array of all such arcs (or,
better yet, an array of adjacent nodes). Can I get this array without using
the iterator? (using the iterator seems to be a terribly inefficient way to
go about the task...)

Thanks! Meir
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