OT Signature quote [was Re: Unrecognized escape sequences in string literals]
davea at ieee.org
Sat Aug 15 04:25:18 CEST 2009
Benjamin Kaplan wrote:
> On Fri, Aug 14, 2009 at 12:42 PM, Douglas Alan <darkwater42 at gmail.com>wrote:
>> P.S. Overloading "left shift" to mean "output" does indeed seem a bit
>> sketchy, but in 15 years of C++ programming, I've never seen it cause
>> any confusion or bugs.
> The only reason it hasn't is because people use it in "Hello World". I bet
> some newbie C++ programmers get confused the first time they see << used to
Actually, I've seen it cause confusion, because of operator precedence.
The logical shift operators have a fairly high level priority, so
sometimes you need parentheses that aren't obvious. Fortunately, most
of those cases make compile errors.
C++ has about 17 levels of precedence, plus some confusing associative
rules. And operator overloading does *NOT* change precedence.
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