The relevant issue for this is https://github.com/mozilla/rust/issues/4334.
-Kevin On Jan 15, 2014, at 7:26 AM, Michael Neumann <[email protected]> wrote: > > Am 15.01.2014 16:23, schrieb Evan G: >> I'm not weighing in on whether this is something rust should do or not, but >> we could mimic the 16i, 10u numeric literal system to achieve this in >> syntax. An ascii literal would have a suffix, for example 'x'a or 'x'u to >> explicitly specify unicode (which would still be the default). This could >> probably work for string literals too. > > Something like 'x'a would be very nice to have! > > Regards, > > Michael > >> >> >> On Wed, Jan 15, 2014 at 8:37 AM, Michael Neumann <[email protected]> wrote: >> Hi, >> >> There are lots of protocols based on ASCII character representation. In >> Rust, the natural way to represent them is >> by an u8 literal (optionally wrapped within std::ascii::Ascii). >> What I am missing is a simple way to represent those literals in code. What >> I am doing most of the time is: >> >> fn read_char() -> Option<char> { >> match io.read_byte() { >> Some(b) => Some(b as char), >> None => None >> } >> } >> >> And then use character literals in pattern matching. What I'd highly prefer >> is a way to directly repesent ASCII characters >> in the code, like: >> >> match io.read_byte().unwrap { >> 'c'_ascii => .... >> .... >> } >> >> If macros would work in patterns, something like: >> >> match ... { >> ascii!('a') => ... >> } >> >> would work for me too. Ideally that would work with range patterns as well, >> but of course an ascii_range!() macro would >> do the same. >> >> Is this useful to anyone? >> >> Regards, >> >> Michael >> _______________________________________________ >> Rust-dev mailing list >> [email protected] >> https://mail.mozilla.org/listinfo/rust-dev >> > > _______________________________________________ > Rust-dev mailing list > [email protected] > https://mail.mozilla.org/listinfo/rust-dev
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