Wait, it looks like String(byRepeatingString: aString, count: 3) only works on characters and was removed, replace it with aString + aString + aString.
On Fri, Jun 10, 2016 at 7:38 PM Saagar Jha <[email protected]> wrote: > Yes, that’s what I meant. Basically, I see stuff like this: > > func tripleForceUnwrapping(aString: String!) -> String { > return String(byRepeatingString: aString, count: 3) > } > > and later users get a crash with this: > > let possiblyNilString = someFunctionThatRetunsAnOptional() > tripleForceUnwrapping(possiblyNilString) > > even though it compiles fine. > > func tripleWithoutUnwrapping(aString: String?) -> String { > return String(byRepeatingString: aString, count: 3) > } > > let possiblyNilString = someFunctionThatRetunsAnOptional() > tripleWithoutUnwrapping(possiblyNilString) > > meanwhile, doesn’t compile and forces the user to think “huh, it’s not > compiling because there’s an Optional” and hopefully add a check > > > On Fri, Jun 10, 2016 at 7:18 PM Paul Cantrell via swift-evolution < > [email protected]> wrote: > >> >> > On Jun 10, 2016, at 7:43 PM, Dave Abrahams via swift-evolution < >> [email protected]> wrote: >> > >> > on Thu Jun 09 2016, Saagar Jha <[email protected]> wrote: >> > >> >> Yes, that’s exactly my point. Force unwrapping optionals adds >> >> confusion for new users; all too often I see newcomers ending up with >> >> the assumption that the force unwrapping takes care of the check for >> >> them. >> > >> > ...but, it *does*. >> >> I took Saagar to mean “the assumption that force unwrapping takes care of >> doing the right thing for them so they don’t ever have to think about nil >> at all.” Which is indeed quite common in beginner Swift code. >> >> Sadly, there is no compile-time check for mindfulness. >> >> Cheers, P >> >> _______________________________________________ >> swift-evolution mailing list >> [email protected] >> https://lists.swift.org/mailman/listinfo/swift-evolution >> > -- > -Saagar Jha > -- -Saagar Jha
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