has_key?(p1)
public
Returns true if the database contains the given key.
static VALUE
fsdbm_has_key(VALUE obj, VALUE keystr)
{
datum key, val;
struct dbmdata *dbmp;
DBM *dbm;
ExportStringValue(keystr);
key.dptr = RSTRING_PTR(keystr);
key.dsize = RSTRING_LENINT(keystr);
GetDBM2(obj, dbmp, dbm);
val = sdbm_fetch(dbm, key);
if (val.dptr) return Qtrue;
return Qfalse;
}