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] <mailto:[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] <mailto:[email protected]> https://mail.mozilla.org/listinfo/rust-dev
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