closed?()
Returns true if the database is closed, false otherwise.
static VALUE fdbm_closed(VALUE obj) { struct dbmdata *dbmp; TypedData_Get_Struct(obj, struct dbmdata, &dbm_type, dbmp); if (dbmp == 0) return Qtrue; if (dbmp->di_dbm == 0) return Qtrue; return Qfalse; }