hmap/Sources/HeaderMapCore/extensions/DictionaryExtensions.swift

35 lines
1.5 KiB
Swift
Executable File

// MIT License
//
// Copyright (c) 2017 Milen Dzhumerov
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
import Foundation
extension Dictionary {
func dictionaryMap<NewKey: Hashable, NewValue>(_ mapper: ((Key, Value)) throws -> (NewKey, NewValue)) rethrows -> Dictionary<NewKey, NewValue> {
var dict = Dictionary<NewKey, NewValue>()
for keyValuePair in self {
let (newKey, newValue) = try mapper(keyValuePair)
dict[newKey] = newValue
}
return dict
}
}