var implicitInteger = 70
implicitInteger = 70.0
let explicitDouble: Double = 70
println("constant double value: \(explicitDouble)")
println("variable integer value: "+String(implicitInteger))
var implicitInteger = 70
implicitIntegvar implicitInteger = 70
implicitInteger = 70.0
let explicitDouble: Double = 70
println("constant double value: \(explicitDouble)")
println("variable integer value: "+String(implicitInteger))
var implicitInteger = 70
implicitInteg