On Thursday 05 June 2014 06:10:42 Frédéric Grosshans wrote: > Le 05/06/2014 12:52, David Starner a écrit : > > On Thu, Jun 5, 2014 at 3:04 AM, J. Leslie Turriff > > > > <[email protected]> wrote: > >> What I find interesting is that (with the possible exception of > >> Ada) I don't think that any of the commonly used languages allow for the > >> use of Unicode characters for non- user-defined tokens (i.e. reserved > >> words, etc.). > > > > There is one non-ASCII character in the library, for Pi, and that > > caused some fuss, along with some eye-rolling, as writing the Unicode > > characters as ["03C0"] is permitted. Ada is a conservative language, > > and there's no real drive to make changes like these. (I was mistaken > > on the 20 years for Unicode identifiers; it was the Ada 2005 standard > > that permitted it, not Ada 95.) > > > > Scala is not really a commonly used language, but does use some > > Unicode arrows: ⇒ for =>, ←for <- and → for ->. Most people don't > > bother. > > > > ALGOL 60 and ALGOL 68 used non-ASCII characters like ×, ÷, ≤, ≥, ≠, ¬, > > ∨, ∧, ⊂, ≡, ␣ and ⏨, and had compiler defined spellings for keywords. > > And, of course, there is APL ( > https://en.wikipedia.org/wiki/APL_%28programming_language%29 ). Unicode > has 70 characters specially for its use (APL FUNCTIONAL SYMBOL ****), > U+2336 to U+237A since Unicode 1.1 and U+2395 since Unicode 3.0 All true; but do any languages allow for keywords (if, then, else, do, while, until, end, iterate, leave, call return, exit,...) to be expressed in the programmer's locale? -- "Disobedience is the true foundation of liberty. The obedient must be slaves." --Henry David Thoreau
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