[Bug 186] New: 'and' and 'or' as alternatives for && and ||

[d-bugmail at puremagic.com]

http://d.puremagic.com/bugzilla/show_bug.cgi?id=186

           Summary: 'and' and 'or' as alternatives for && and ||
           Product: D
           Version: 0.157
          Platform: Macintosh
        OS/Version: Mac OS X
            Status: NEW
          Severity: enhancement
          Priority: P5
         Component: DMD
        AssignedTo: bugzilla at digitalmars.com
        ReportedBy: barnaby at daltonsgate.com


example:

if("aardvark" < "zebra" and "C" < "D")
    writefln("all is right in the world");

I've found this is a small change that really helps. Especially when it has
lower precedence than &&, ||.
For example:

while(obj = getobj() && good(obj)) { ... }

actually means:

while(obj = (getobj() && good(obj)) { ... }

with the C precedence. This doesn't compile (unless obj is a boolean).
With lower precedence, the extra brackets would not be needed for this
to give the natural interpretation. I find this pattern comes up commonly,
and I miss it from higher level languages like Ruby.


--