function - Error when using reduce() in Swift 2.0 -


note: applies swift 3.0

when attempt use reduce function, error saying:

reduce unavailable: call 'reduce()' method on sequence

i figured out how enumerate() function cannot seem solve issue. here line of code returning error: 

var hashvalue: int {     return reduce(blocks, 0) { $0.hashvalue ^ $1.hashvalue } }

you fix same way fixed problem enumerate(). in swift 2, reduce has been removed global function , has been added instance method on objects conform sequencetype protocol via protocol extension. usage follows.

var hashvalue: int {     return blocks.reduce(0) { $0.hashvalue ^ $1.hashvalue } }

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