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To group an array according to some criteria in Swift
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| // https://medium.com/@milanpanchal24/how-to-group-array-using-dictionary-in-swift-6d185c8c79c | |
| let fruits = ["Apple", "Apricot", "Avocado", | |
| "Banana", "Boysenberry", "Blueberry", "Bing Cherry", | |
| "Clementine", "Cucumber", | |
| "Dates", "Dewberries", "Dragon Fruit"] | |
| let groupedByAlphabet = Dictionary(grouping: fruits) { $0.first! } | |
| print(groupedByAlphabet) | |
| // Prints following output: | |
| // ["B": ["Banana", "Boysenberry", "Blueberry", "Bing Cherry"], "A": ["Apple", "Apricot", "Avocado"], "D": ["Dates", "Dewberries", "Dragon Fruit"], "C": ["Clementine", "Cucumber"]] |
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