igraph_ptr: cpp11-powered class for igraph objects

igraph_ptr is a subclass of external pointer to C++ IGraph objects. The IGraph class is a thin wrapper of igraph_t in C igraph library.

Usage

is_igraph(x)

Source

https://github.com/igraph/igraph/blob/master/include/igraph_datatype.h

Arguments

x

An object to be tested.

Value

A logical, TRUE if x is of class igraph_ptr, FALSE otherwise.

See also

as_igraph() and as.data.frame.igraph_ptr() for conversion from and to R objects.

Examples

v = seq_len(6L)
is_igraph(v)
#> [1] FALSE

g = graph_create(v)
is_igraph(g)
#> [1] TRUE

print(g)
#> $V  tibble [6 × 0] (S3: tbl_df/tbl/data.frame)
#>  Named list()
#> # A tibble: 3 × 2
#>    from    to
#>   <int> <int>
#> 1     1     2
#> 2     3     4
#> 3     5     6