End of Life Ruby 3.0 has reached end of life and gets no more fixes. Switch to Ruby 4.0 →
instance method
DBM#each_key
dbm.each_key {|key| block} → self
ext/dbm/dbm.c
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static VALUE
fdbm_each_key(VALUE obj)
{
datum key;
struct dbmdata *dbmp;
DBM *dbm;
RETURN_ENUMERATOR(obj, 0, 0);
GetDBM2(obj, dbmp, dbm);
for (key = dbm_firstkey(dbm); key.dptr; key = dbm_nextkey(dbm)) {
rb_yield(rb_str_new(key.dptr, key.dsize));
GetDBM2(obj, dbmp, dbm);
}
return obj;
}
Calls the block once for each key string in the database. Returns self.