Jeremias Serafim Araujo jeremiasdsa

jeremiasdsa / Dictionary.Value+RangeReplaceableCollection.swift

Created August 9, 2018 01:39 — forked from asmallteapot/Dictionary.Value+RangeReplaceableCollection.swift

Swift: Append an element to an array in a dictionary value, creating the array/value if needed

	import Foundation

	extension Dictionary where Value: RangeReplaceableCollection {
	public mutating func append(element: Value.Iterator.Element, toValueOfKey key: Key) -> Value? {
	var value: Value = self[key] ?? Value()
	value.append(element)
	self[key] = value
	return value
	}
	}