I asked already a few months ago how to count the elements of a Stream. My new approach is:
int count = stream.mapToInt(element -> 1).sum();
What is the most elegant solution in your opinion?
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principal-ideal-domain
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6`stream.count()` – Eran Dec 10 '15 at 11:38
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@Eran Why didn't tell me anybody seven months ago? – principal-ideal-domain Dec 10 '15 at 11:40
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@principal-ideal-domain Be happy someone did now I guess – J. Murray Dec 10 '15 at 11:41
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You asked something else in the linked question. – Eran Dec 10 '15 at 11:42
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@J.Murray I'm very happy indeed, but surprised, too ;). – principal-ideal-domain Dec 10 '15 at 11:42
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@Eran Thanks for pointing that out. You're right. It was a different question. – principal-ideal-domain Dec 10 '15 at 11:43
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1You know that there is something called [API documentation](http://docs.oracle.com/javase/8/docs/api/?java/util/stream/Stream.html)? By the way, even without using it, IDEs suggest you available methods when proposing code completions… – Holger Dec 10 '15 at 11:58
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From Oracle's Documentation on Stream:
Reduction operations
A reduction operation (also called a fold) takes a sequence of input elements and combines them into a single summary result by repeated application of a combining operation, such as finding the sum or maximum of a set of numbers, or accumulating elements into a list. The streams classes have multiple forms of general reduction operations, called reduce() and collect(), as well as multiple specialized reduction forms such as sum(), max(), or count().
You were using one of the reduction operations from stream, there just happens to be others as well
J. Murray
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