getSizeInRange
fun getSizeInRange(first: <Error class: unknown class>, last: <Error class: unknown class>): <Error class: unknown class>
Gets the number of values that are part of the set from @first to @last (inclusive).
Note that this function returns a guint64, because when all values are set, the return value is G_MAXUINT + 1. Unless you are sure this cannot happen (it can't with GListModel), be sure to use a 64bit type.
Return
The number of values in the set from @first to @last.
Parameters
first
the first element to include
last
the last element to include