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jpmcglone/NSDictionary+Additions.swift

Created May 28, 2019 19:43
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NSDictionary+Additions.swift
func highestKey<T, N: Comparable>(of dictionary: Dictionary<T, N>) -> T? {
var highestKey: T?
var highestValue: N?
for key in dictionary.keys {
let value = dictionary[key]
if highestValue == nil || value! > highestValue! {
highestKey = key
highestValue = value
}
}
return highestKey
}
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let dictionary = ["A" : 3, "Z": 6, "D": 7]
let key = highestKey(of: dictionary)
print(key ?? "n/a")

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