Or maybe you mean something else; if so, please share!
The current proposal is more about matching and extracting the first
arguments
It is really about matching *the whole array*. Pattern matching is
about destructuring. Arrays are part of the language. They have
structure. We give people a way to make arrays by specifying all the
elements; pattern matching deconstructs the array by matching all the
elements.
than matching/extracting the last arguments or the rest are also
useful IMO.
By example, if i want to parse command line arguments composed of
options and a filename, i may want to write something like
case [String... options, String filename] -> ...
case [String...] -> help()
Just because something is useful doesn't mean it has an equal claim to
be a language feature. (Arrays are a language feature; inserting into
the middle of a sequence is useful, but arrays don't offer that -- we
have lists for that. That doesn't make arrays broken. Lists are a
different feature.)
