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I have a map that has SomeClass -> Double I want to get the SomeClass associated with the smallest value. How do I go about doing this? Ties do not matter and can be broken arbitrarily if that is an issue.
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To get the min and max values in a Map:Use the values() method to get an iterator object of the Map's values. Using spread syntax, pass the iterator to the Math. min() and Math. max() methods.
A Map is an Iterable consisting of pairs of keys and values (also named mappings or associations). Scala's Predef object offers an implicit conversion that lets you write key -> value as an alternate syntax for the pair (key, value) .
Use minBy:
Map("a" -> 3.0, "b" -> 1.0, "c" -> 2.0).minBy(_._2)._1
This gives "b" as expected.
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