collections - Java: how to transform from List to Map without iterating - Stack Overflow



collections - Java: how to transform from List to Map without iterating - Stack Overflow

Guava has Maps.uniqueIndex(Iterable values, Function keyFunction) and Multimaps.index(Iterable values, Function keyFunction), but they don't transform the values. There are some requests to add utility methods that do what you want, but for now, you'll have to roll it yourself using Multimaps.index() and Multimaps.transformValues():


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