add a few accessors to Graph
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@ -119,11 +119,21 @@ impl<N:Debug,E:Debug> Graph<N,E> {
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&self.nodes
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}
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#[inline]
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pub fn len_nodes(&self) -> usize {
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self.nodes.len()
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}
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#[inline]
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pub fn all_edges<'a>(&'a self) -> &'a [Edge<E>] {
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&self.edges
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}
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#[inline]
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pub fn len_edges(&self) -> usize {
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self.edges.len()
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}
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///////////////////////////////////////////////////////////////////////////
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// Node construction
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