Scala has a lot of 'sugar':
f(...) becomes f.apply(...)
matching calls unapply with some various binding.
Some parenthesis are optional: Some(1,2,3) is Some((1,2,3))
optional . so a + b is a.+(b)
colon changes associativity, so a +: b is b.+:(a)
for expressions become, map, flatMap, filter, withFilter and forEach, according to various rules.
def f[A: B]() adds an implicit parameter of type B[A]
I'm sure there's more but that's the top of my head. Of course it's not actually a long list, but none of that is obvious for a newcomer.
f(...) becomes f.apply(...)
matching calls unapply with some various binding.
Some parenthesis are optional: Some(1,2,3) is Some((1,2,3))
optional . so a + b is a.+(b)
colon changes associativity, so a +: b is b.+:(a)
for expressions become, map, flatMap, filter, withFilter and forEach, according to various rules.
def f[A: B]() adds an implicit parameter of type B[A]
I'm sure there's more but that's the top of my head. Of course it's not actually a long list, but none of that is obvious for a newcomer.