# Returns the number of eligible matches for the distance.

Source:`R/InfinitySparseMatrix.R`

`num_eligible_matches-methods.Rd`

This will return a list of the number of finite entries in a distance
matrix. If the distance has no subgroups, it will be a list of length 1. If
the distance has subgroups (i.e. `x`

is an
`BlockedInfinitySparseMatrix`

, it will be a named list.)