Files
wren/test/language/setter/associativity.wren
Bob Nystrom 58e4d26648 "IO" -> "System".
Get rid of the separate opt-in IO class and replace it with a core
System class.

- Remove wren_io.c, wren_io.h, and io.wren.
- Remove the flags that disable it.
- Remove the overloads for print() with different arity. (It was an
  experiment, but I don't think it's that useful.)
- Remove IO.read(). That will reappear using libuv in the CLI at some
  point.
- Remove IO.time. Doesn't seem to have been used.
- Update all of the tests, docs, etc.

I'm sorry for all the breakage this causes, but I think "System" is a
better name for this class (it makes it natural to add things like
"System.gc()") and frees up "IO" for referring to the CLI's IO module.
2015-09-15 07:46:09 -07:00

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class Foo {
construct new(value) { _value = value }
toString { _value }
bar=(value) {
_value = value
return value
}
}
var a = Foo.new("a")
var b = Foo.new("b")
var c = Foo.new("c")
// Assignment is right-associative.
a.bar = b.bar = c.bar = "d"
System.print(a.toString) // expect: d
System.print(b.toString) // expect: d
System.print(c.toString) // expect: d