CODEWITHSUNDEEP
scala
Alan
Alan

Reputation: 3

Apply math.round into scala language

Instead of using this approach:

a.map(100 * _.answer.toFloat).map(_.toInt + "%").getOrElse("")

How can I apply math.round approach in above code.

Thanks

Upvotes: 0

Views: 129

Answers (2)

Kevin Wright
Kevin Wright

Reputation: 49705

Arguably a comment, but I needed to include code...

Jesper's answer can be improved by collapsing the double-map, and extracting the method to calculate a percent string:

def percentStr(x: Float) = (100*x).round.toString + "%"

a.map(x => percentStr(x.answer.toFloat)).getOrElse("")

Upvotes: 1

Jesper
Jesper

Reputation: 206796

What exactly do you mean, you want to round instead of use toInt, which just cuts off the decimals? Then just use round instead of toInt:

a.map(100 * _.answer.toFloat).map(_.round + "%").getOrElse("")

Upvotes: 2

Related Questions