17/07/02 10:23:22.94 PPQhv25G0.net
>>5
//Kotlin
val a = generateSequence(0){it+1}
println( a.map{it*10}.filter{50<it}.take(5).toList() ) //正常動作
//Swift
extension Sequence { var array:[Iterator.Element] {get{return map{$0}}} }
let a = sequence(first:0){$0+1}.lazy
print( a.map{$0*10}.filter{50<$0}.prefix(5).array ) //実行時エラー