public Vec replace(int col, Vec nv) {
assert col < _names.length;
Vec rv = vecs()[col];
assert rv.group().equals(nv.group());
_vecs[col] = nv;
_keys[col] = nv._key;
if (DKV.get(nv._key) == null) // If not already in KV, put it there
DKV.put(nv._key, nv);
return rv;
}
/** Appends a named column, keeping the last Vec as the response */
public void add(String name, Vec vec) {
assert _vecs.length == 0 || anyVec().group().equals(vec.group());
final int len = _names.length;
_names = Arrays.copyOf(_names, len + 1);
_vecs = Arrays.copyOf(_vecs, len + 1);
_keys = Arrays.copyOf(_keys, len + 1);
_names[len] = name;
_vecs[len] = vec;
_keys[len] = vec._key;
}
public Frame(String[] names, Vec[] vecs) {
// assert names==null || names.length == vecs.length : "Number of columns does not match to
// number of cols' names.";
_names = names;
_vecs = vecs;
_keys = new Key[vecs.length];
for (int i = 0; i < vecs.length; i++) {
Key k = _keys[i] = vecs[i]._key;
if (DKV.get(k) == null) // If not already in KV, put it there
DKV.put(k, vecs[i]);
}
Vec v0 = anyVec();
if (v0 == null) return;
VectorGroup grp = v0.group();
for (int i = 0; i < vecs.length; i++) assert grp.equals(vecs[i].group());
}