infix operator += { associativity right precedence 90 assignment } Declarations func +=(inout: Double, rhs: Double) Declaration func +=(inout lhs: Double, rhs: Double) func +=(inout: Float, rhs: Float) Declaration func +=(inout lhs: Float, rhs: Float) func +=(inout: Float80, rhs: Float80) Declaration func +=(inout lhs: Float80, rhs: Float80) func +=(inout: Int, rhs: Int) Declaration func +=(inout lhs: Int, rhs: Int) func +=(inout: Int8, rhs: Int8) Declaration func +=(inout lhs: Int8, rhs: Int8) func +=(inout: Int16, rhs: Int16) Declaration func +=(inout lhs: Int16, rhs: Int16) func +=(inout: Int32, rhs: Int32) Declaration func +=(inout lhs: Int32, rhs: Int32) func +=(inout: Int64, rhs: Int64) Declaration func +=(inout lhs: Int64, rhs: Int64) func +=(inout: String, rhs: String) Declaration func +=(inout lhs: String, rhs: String) func +=(inout: UInt, rhs: UInt) Declaration func +=(inout lhs: UInt, rhs: UInt) func +=(inout: UInt8, rhs: UInt8) Declaration func +=(inout lhs: UInt8, rhs: UInt8) func +=(inout: UInt16, rhs: UInt16) Declaration func +=(inout lhs: UInt16, rhs: UInt16) func +=(inout: UInt32, rhs: UInt32) Declaration func +=(inout lhs: UInt32, rhs: UInt32) func +=(inout: UInt64, rhs: UInt64) Declaration func +=(inout lhs: UInt64, rhs: UInt64) func += <T : _IntegerArithmeticType>(inout: T, rhs: T) add lhs and rhs and store the result in lhs, trapping in case of arithmetic overflow (except in -Ounchecked builds). Declaration func +=<T : _IntegerArithmeticType>(inout lhs: T, rhs: T) func += <T : _UnsignedIntegerType>(inout: T, rhs: T._DisallowMixedSignArithmetic) Declaration func +=<T : _UnsignedIntegerType>(inout lhs: T, rhs: T._DisallowMixedSignArithmetic) func += <T : Strideable>(inout: T, rhs: T.Stride) Declaration func +=<T : Strideable>(inout lhs: T, rhs: T.Stride) func += <T, C : CollectionType where T == T>(inout: [T], rhs: C) Extend lhs with the elements of rhs Declaration func +=<T, C : CollectionType where T == T>(inout lhs: [T], rhs: C) func += <T, C : CollectionType where T == T>(inout: _ContiguousArrayBuffer<T>, rhs: C) Append the elements of rhs to lhs Declaration func +=<T, C : CollectionType where T == T>(inout lhs: _ContiguousArrayBuffer<T>, rhs: C) func += <T, C : CollectionType where T == T>(inout: _UnitTestArray<T>, rhs: C) Extend lhs with the elements of rhs Declaration func +=<T, C : CollectionType where T == T>(inout lhs: _UnitTestArray<T>, rhs: C) func += <T, C : CollectionType where T == T>(inout: _UnitTestArrayBuffer<T>, rhs: C) Append the elements of rhs to lhs Declaration func +=<T, C : CollectionType where T == T>(inout lhs: _UnitTestArrayBuffer<T>, rhs: C) func += <T, C : CollectionType where T == T>(inout: ArraySlice<T>, rhs: C) Extend lhs with the elements of rhs Declaration func +=<T, C : CollectionType where T == T>(inout lhs: ArraySlice<T>, rhs: C) func += <T, C : CollectionType where T == T>(inout: ContiguousArray<T>, rhs: C) Extend lhs with the elements of rhs Declaration func +=<T, C : CollectionType where T == T>(inout lhs: ContiguousArray<T>, rhs: C) func += <T, S : SequenceType where T == T>(inout: [T], rhs: S) Extend lhs with the elements of rhs Declaration func +=<T, S : SequenceType where T == T>(inout lhs: [T], rhs: S) func += <T, S : SequenceType where T == T>(inout: _UnitTestArray<T>, rhs: S) Extend lhs with the elements of rhs Declaration func +=<T, S : SequenceType where T == T>(inout lhs: _UnitTestArray<T>, rhs: S) func += <T, S : SequenceType where T == T>(inout: ArraySlice<T>, rhs: S) Extend lhs with the elements of rhs Declaration func +=<T, S : SequenceType where T == T>(inout lhs: ArraySlice<T>, rhs: S) func += <T, S : SequenceType where T == T>(inout: ContiguousArray<T>, rhs: S) Extend lhs with the elements of rhs Declaration func +=<T, S : SequenceType where T == T>(inout lhs: ContiguousArray<T>, rhs: S) func += <T>(inout: _UnitTestArrayBuffer<T>, rhs: T) Append rhs to lhs Declaration func +=<T>(inout lhs: _UnitTestArrayBuffer<T>, rhs: T) func += <T>(inout: UnsafeMutablePointer<T>, rhs: Int) Declaration func +=<T>(inout lhs: UnsafeMutablePointer<T>, rhs: Int) func += <T>(inout: UnsafePointer<T>, rhs: Int) Declaration func +=<T>(inout lhs: UnsafePointer<T>, rhs: Int)