Why do not have `0o` prefix for octal numbers?
monarch_dodra
monarchdodra at gmail.com
Wed Sep 19 09:15:19 PDT 2012
On Wednesday, 19 September 2012 at 16:02:41 UTC, Hauleth wrote:
> Some time ago I've asked on SO why most languages have `0`
> prefix for octal numbers. My opinion is the same as D designers
> that it cause a lot of bugs, but why octal numbers are avaible
> only by using `std.conv.octal`?
AFAIK: It is experimental. "The $(D octal) facility is intended
as an experimental facility to replace _octal literals starting
with $(D '0'), which many find confusing."
The reason for deprecating "0" prefix was indeed because of bugs.
Then it was noticed that a library solution was available, and as
a rule of thumb, if the library can do it, it is moved from the
language to the library.
You'll see a lot of threads talking about "scope", which went the
same way (which is now a library feature, not a language feature).
IMO, deprecating "0765" was a good move. Personally, I'd rather
have had "0o765" instead of "octal!765" (if only for
highlighting). But I don't think it is a big deal.
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