Sha256: 567704b8ced354ea3944507dc946b53fe877091d01752411c9b0ed34e34f9da9
Contents?: true
Size: 600 Bytes
Versions: 31
Compression:
Stored size: 600 Bytes
Contents
module TogoStanza::Stanza
module Grouping
module_function
def grouping(rows, *keys)
normalized_keys = keys.inject([]) {|acc, key|
acc + (key.is_a?(Hash) ? key.to_a : [[key, key]])
}
_grouping(rows, *normalized_keys)
end
def _grouping(rows, *keys)
(k1, a1), (k2, a2) = keys
return rows.map {|row| row[k1] } if keys.size == 1
rows.group_by {|row|
k1.is_a?(Array) ? row.values_at(*k1) : row[k1]
}.map {|vs, rs|
{
a1 => vs,
a2 => _grouping(rs, *keys.drop(1))
}
}
end
end
end
Version data entries
31 entries across 31 versions & 1 rubygems