"Eric Niebler" <eric@boost-consulting.com> wrote in message news:413BF440.20505@boost-consulting.com...
Jonathan Turkanis wrote:
"Eric Niebler" <eric@boost-consulting.com> wrote:
2) s1 kind of looks like $1, which is the perl equivalent.
I didn't think of 2). Did you put in in the docs?
No. Guess I should.
FWIW, capital 'S' looks more like '$' to me. E.g.,
'<' >> (S1= +_w) >> '>' >> -*_ >> "</" >> S1 >> '>'
This is true, but it runs contrary to Boost's naming conventions. ALL CAPS is for macros.
I was thinking of vecS .. I forgot that 1 is a capital. :-)
That said, I'm open to suggestions for avoiding the name conflicts. I would consider switching back to _1 _2 _3 if the technical problems were overcome and if people liked it better.
May I assume you have considered reusing the placeholders from boost::bind? There doesn't seem to be much operator overloading involving boost::arg<>.
I thought of that. Trouble is, xpressive's placeholders need to have an operator=, which must be a member. Besides, I rely on ADL to find xpressive's operators, and bind's placeholders are not in the correct namespace for my purposes.
This class of placeholders is a big problem. Jonathan