let _ = require('lodash/fp')
let F = require('futil')
let data = [
{timePeriod: 'asdf', a: 1, b:2},
{a: 2}
]
let columnStats = _.curry((f, data) =>
_.flow(
_.head,
F.mapValuesIndexed((val, key) => f(key, data))
)(data)
)
let compactMean = _.flow(F.compactMap, _.mean)
let getCohortsAverage = _.flow(
columnStats(compactMean),
_.omit('timePeriod')
)
getCohortsAverage(data)
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