Function
findEdge
Finds an edge.
Include Headers
seqan/graph_types.h
Parameters
|  A graph. Types:  Graph | |
|  A vertex descriptor. Types:  VertexDescriptor | |
|  An edge label. Types:  Alphabet | |
|  A vertex descriptor. Types:  VertexDescriptor | 
Remarks
 In an automaton an edge is uniquely defined by a vertex and a label.
In all other graphs two adjacent vertices uniquely define an edge.
If there are multiple edges between two vertices the behaviour is undefined.
Return Values
 An edge descriptor or 0 if edge is not present.
Note: In automatons there is always a valid edge descriptor but the target may be nil.
Types:  EdgeDescriptor
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