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So that they aren't offered as an autocomplete suggestion:
implicit class Shouty(string: String) extends AnyVal {
def SHOUT_! = string.toUpperCase + "!"
}
"". // autocompletion offers `.string` here
The original incarnation of value classes didn't allow this
sort of encapsulation, so we either invented goofy names like
`__thingToAdd` or just picked `x` or `self`. But SI-7859 has
delivered us the freedom to keep the accessor private.
Should we keep any of these accessors around in a deprecated
form?
The implicit classes in Predef were added in 2.11.0-M2
(c26a8db067e4f), so they are okay.
I think we can make reason that these APIs were both accidental
and unlikely to be interpreted as public, so we can break them
immediately.
scala> Left(1).x
res0: scala.util.Either[Int,Int] = Left(1)
scala> import concurrent.duration._
import concurrent.duration._
scala> 1.n
res1: Int = 1
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Optimistically, this is preparation for a day when we don't
let numeric types drift with the winds. Even without the optimism
it's a good idea. It flushed out an undocumented change in
the math package object relative to the methods being forwarded (a
type is widened from what is returned in java) so I documented
the intentionality of it.
Managing type coercions manually is a bit tedious, no doubt,
but it's not tedious enough to warrant abandoning type safety
just because java did it.
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- added test for “span” and “fromNow” qualifiers
- make those actually work even when there is an expected type
- add ScalaDoc to them
- verify (and fix) conversion Deadline -> FiniteDuration
- also make Int * Duration => FiniteDuration work (and test it)
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More use of implicit classes and value classes; aliased units to
make importing TimeUnit and TimeUnit._ unnecessary; placed some
classes in their own files because "the unit of compilation is
the file" and we shouldn't bundle more than necessary; fixed some
examples.
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so that the full package can be imported naturally:
import scala.concurrent.duration._
will give you all the types (Duration, FiniteDuration, Deadline) and the
DSL for constructing these.
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