Use this if you are using igraph from R
Concatenate edge sequences
## S3 method for class 'igraph.es' c(..., recursive = FALSE)
The edge sequences to concatenate. They must all refer to the same graph.
Ignored, included for S3 compatibility with the
An edge sequence, the input sequences concatenated.
Other vertex and edge sequence operations:
g <- make_(ring(10), with_vertex_(name = LETTERS[1:10])) c(E(g), E(g)['A|B'], E(g)[1:4])