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s3cur3/key-transform.swift

Forked from christianselig/milkshake.swift
Last active March 20, 2021 12:13
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Generic versions of transforming Dictionary keys and values, inspired by https://twitter.com/ChristianSelig/status/1372961695346352130
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key-transform.swift
extension Dictionary {
func mapKeys<NewKey>(_ transform: (Key) -> NewKey) -> [NewKey: Value] {
reduce(into: [NewKey: Value]()) { result, item in
result[transform(item.key)] = item.value
}
}
}
/// 🥤
extension Dictionary where Key: RawRepresentable {
func rawConversion<NewKey>() -> [NewKey: Value] where NewKey == Key.RawValue {
mapKeys(\.rawValue)
}
}
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s3cur3 commented Mar 20, 2021

Updated to match the naming scheme of the existing Dictionary.mapValues.

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