-1 On Wed, Jan 25, 2017 at 1:11 PM Joe Groff via swift-evolution < swift-evolution@swift.org> wrote:
> > > On Jan 25, 2017, at 9:47 AM, Jacob Bandes-Storch <jtban...@gmail.com> > wrote: > > > > Really? My observation from a quick test is that "a? = b" assigns b to a > if a already has a value, or does nothing if it's nil. This is sort of the > opposite of what's being proposed, which is that "a ?= b" should assign to > a only if it does NOT have a value. > > > My mistake, I misread the proposal. What Nichi appears to be suggesting is > an assignment that only happens when `b` has a value. I would hesitate to > spell that `?=` since that's so similar to '? =', but perhaps it's useful, > though there are many ways to spell that already. > > -Joe > > _______________________________________________ > swift-evolution mailing list > swift-evolution@swift.org > https://lists.swift.org/mailman/listinfo/swift-evolution >
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