One-based or zero-based indexing

[szhorvat]

igraph's high-level interfaces follow the zero-based / one-based indexing convention of their host languages. The C library and the Python interface use zero-based indexing. The R and Mathematica interfaces use one-based indexing.

How is this handled here? Julia is one-based. Are indexes shifted accordingly before passing them to the igraph C library?

[Krastanov]

The C interface in IGraphs.LibIGraph is undisturbed, just wrapped directly, and remains 0-based.

The Julia API for the wrapper struct IGraphs.IGraph which implements the Graphs.jl interface is 1-based.