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maybe more efficient #114

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5 changes: 3 additions & 2 deletions xdeps/table.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1131,8 +1131,9 @@ def match_not(self, regexp ,col=None):
"""Get a mask of rows not matching the regular expression on the column (default is index)."""
col=self.table._index if col is None else col
indices=self.table._get_col_regexp_indices(regexp, col)
indices = np.setdiff1d(np.arange(len(self.table)), indices)
return self.table._select_rows(indices)
full_mask = np.ones(len(self.table), dtype=bool)
full_mask[indices] = False
return self.table._select_rows(full_mask)


class _ColView:
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