def rec_join(key, r1, r2, jointype='inner', r1postfix='1', r2postfix='2',
defaults=None):
"""
Join arrays `r1` and `r2` on keys.
Alternative to join_by, that always returns a np.recarray.
See Also
--------
join_by : equivalent function
"""
kwargs = dict(jointype=jointype, r1postfix=r1postfix, r2postfix=r2postfix,
defaults=defaults, usemask=False, asrecarray=True)
return join_by(key, r1, r2, **kwargs)
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