List of Scala's "magic" functions

Where can I find a list of Scala's "magic" functions, such as apply, unapply, update, +=, etc.?

By magic-functions I mean functions which are used by some syntactic sugar of the compiler, for example

o.update(x,y) <=> o(x) = y

I googled for some combination of scala magic and synonyms of functions, but I didn't find anything.

I'm not interested with the usage of magic functions in the standard library, but in which magic functions exists.

Solution 1:

As far as I know:

Getters/setters related:

apply
update
identifier_=

Pattern matching:

unapply
unapplySeq

For-comprehensions:

map
flatMap
filter
withFilter
foreach

Prefixed operators:

unary_+
unary_-
unary_!
unary_~

Beyond that, any implicit from A to B. Scala will also convert A <op>= B into A = A <op> B, if the former operator isn't defined, "op" is not alphanumeric, and <op>= isn't !=, ==, <= or >=.

And I don't believe there's any single place where all of Scala's syntactic sugars are listed.

Solution 2:

In addition to update and apply, there are also a number of unary operators which (I believe) qualify as magical:

• unary_+
• unary_-
• unary_!
• unary_~

Add to that the regular infix/suffix operators (which can be almost anything) and you've got yourself the complete package.

You really should take a look at the Scala Language Specification. It is the only authoritative source on this stuff. It's not that hard to read (as long as you're comfortable with context-free grammars), and very easily searchable. The only thing it doesn't specify well is the XML support.