flatmap versus <- in Scala

Question

Possible Duplicate:
Scala “<-” for comprehension

Could someone please explain how the <- operator in Scala works, or at least point me to a link. Someone tweeted a Scala tip: use <- instead of flatmap. Cool but how?

It's called a [for-comprehension](http://en.wikipedia.org/wiki/List_comprehension#Scala). — hammar, Feb 15 '12 at 14:02

score 5 · Accepted Answer · answered Feb 15 '12 at 14:11

for-comprehension (<-) is just a syntactic sugar for composition of multiple collection-like operations (foreach, map, flatMap, filter etc.)

This is a good article that explains what for-comprehensions translate into:

http://docs.scala-lang.org/tutorials/FAQ/yield.html

flatmap versus <- in Scala

1 Answers1