added string manipulation examples

strings/manipulation.scala

@@ -0,0 +1,26 @@
+import scala.util._
+
+val name = "Matt Aimonetti"
+val email = "matt.aimonetti@email.com"
+println("#head retreives the first character")
+println(name.head)
+println("The same thing can be achieved with #take(1) (from StringOps)")
+println(name.take(1))
+println("To print the last character we can use #takeRight")
+println(name.takeRight(1))
+println("Of course, we could have also used #substring")
+println(name.substring(0,1))
+println(name.substring(name.length-1, name.length))
+println("On the oter hand, #drop & #dropRight can be used to 'removed' characters")
+println(name.drop(1))
+println(name.drop(5))
+println(name.dropRight(10))
+println("We could also split the string using the white space")
+println(name.split(" ")(0))
+println(name.split(" ")(1))
+println("Split takes a string that gets converted in a regexp so you need to be careful, here is an example:")
+println("array size after splitting on '.': " + "matt.aimonetti@email.com".split(".").length)
+println("in this case, you want to escape the string")
+println("array size after splitting on '\\.': " + email.split("\\.").length)
+// Or you can quote the entire string, which makes sense in long strings
+println("array size after splitting on '\\Q.\\E': "+ email.split("\\Q.\\E").length)