Scala code in one day (9) and scala code in one day

Scala code in one day (9) and scala code in one day
Scala code in one day (9)
To better control spark, I recently studied scala language features, mainly reading "quick learning scala" and writing down some codes that I think are useful.

Package examplesimport scala. io. sourceobject Example9 extends App {val source = Source. fromFile ("/home/linger/data/hive_data", "UTF-8") val lines = source. getLines () for (l <-lines) {println (l)} lines. toArray source. mkString source. close () // you can call some Java io libraries to process files. // The regular expression val wsnumws = "" \ s [0-9] + \ s + """. r // The original string format val wsnumws2 = "\ s [0-9] + \ s + ". r // equivalent to above, but need to be transferred // regular Extraction Machine val numitem = "([0-9] +) ([a-z] + )". r val numitem (num, item) = "99 bottle" println (num, item )}

Author: linger link: http://blog.csdn.net/lingerlanlan/article/details/43970979