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anoopmaddasseri/KT_COLLECTION_SUM

Created October 4, 2020 06:25
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Kotlin: Find sum of all values produced by the selector function applied to each element in the collection
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KT_COLLECTION_SUM
val sumByDouble =
data.sumByDouble { serviceGroup: PackageDetails.ServiceGroup -> serviceGroup.serviceItems.price }
++++++++++++++++++++++++++++++++++++++++++
val nums = listOf(10, 20, 30)
println(nums.sum())
val totalQuantity: Int = products.map { it.quantity }.sum()
++++++++++++++++++++++++++++++++++++++++++
val nums = listOf(10, 20, 30)
println(nums.sumBy { it })
println(nums.sumBy { it * 2 })
val doubles = listOf(1.05, 2.05, 3.65)
println(doubles.sumBy { it.roundToInt() })
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