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Last active July 2, 2020 18:16
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agg.cr
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agg.cr
n = NamedTuple.new(
foo: [1, 2, 34, 4],
bar: [32,4, 2, 1, 4],
)
macro agg(nt, **fns)
NamedTuple.new(
{% for k, v in fns %}
{{k}}: {{nt}}[{{k.symbolize}}].{{v.id}},
{% end %}
)
end
f = agg(n, foo: :max, bar: :sum)
puts f
# {foo: 34, bar: 43}
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