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 FUNCTIONNAL SYMBOL ****),
U+2336 to U+237A since Unicode 1.1 and U+2395 since Unicode 3.0
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