Append ListBuffer with tuple

Question

I have several values that i am reading from simple Text file.

This is my data:

val data = new ListBuffer[(String, BigDecimal)]

Now i want to append items inside my ListBuffer:

data += ("bla bla", 12)

And then error received:

type mismatch; found : List[(String, scala.math.BigDecimal)] required: (String, BigDecimal) data += List(("bla bla", 12))

Answer 1

To append it as tuple you should enclose it in parenthesis like this:

data += (("bla bla", 12))

Or you could use append method.

Answer 2

You can use the append function to achive this, e.g.

scala> val data = new ListBuffer[(String, BigDecimal)]
data: scala.collection.mutable.ListBuffer[(String, BigDecimal)] = ListBuffer()

scala> data.append(("bla bla", 12))

scala> data
res11: scala.collection.mutable.ListBuffer[(String, BigDecimal)] = ListBuffer((bla bla,12))