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Serchinastico/filtermap.kt

Created September 17, 2018 15:49
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filter;map koan
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filtermap.kt
// Return the set of cities the customers are from
fun Shop.getCitiesCustomersAreFrom(): Set<City> = customers.map { it.city }.toSet()
// Return a list of the customers who live in the given city
fun Shop.getCustomersFrom(city: City): List<Customer> = customers.filter { it.city == city }
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