foreache:
Scala> Array(“hbase”,”hive”,”spark”,”hadoop “).foreach((a:String) => println(a))
省略参数的类型声明，Scala是能够进行类型推断的.
Scala> Array(“hbase”,”hive”,”spark”,”hadoop “).foreach(a => print(a + ’ ‘))
省略了参数:
**Scala>**Array(“hbase”,”hive”,”spark”,”hadoop “).foreach(print)
for
**Scala>**for (a<-Array(“hbase”,”hive”,”spark”,”hadoop “)) print(a)web