Understanding infix method call and cons operator(::) in Scala

Question

I\'m quite new to Scala programming language, and was trying something out stucked in my mind while I was following the lecture notes at here.

I think I couldn\'t really

Answer 1

It's about precedence not execution order. + has higher precedence than ::, so a + b :: c parses as (a + b) :: c. However infix method calls with regular names have lower precedence, so a foo b c parses as a foo (b c).

See this question for a list of operators ordered by their precedence in scala.