ios8 - Set collection type swift -

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i learning swift through apple's documentation , on collection types chapter , in sets section. 1 of examples this

var letters = set<character>()

but when go enter following error.

error: use of unresolved identifier 'set'  var letters = set<character>()

there revision on sets according documentation, nothing helping me there.

native set available since swift 1.2. everthing points you're using lower version.

swift 1.2 , xcode 6.3 beta

new native set data structure — unordered collection of unique elements bridges nsset , provides value semantics array , dictionary.


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