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From: Vesa Karvonen (vesa.karvonen_at_[hidden])
Date: 2001-05-20 08:52:22

I have updated the CPP library demo.

Yes, admittedly line length limits might cause problems on some compilers.

TIP: If you insert a special symbol into the CPP code in places where there
should be a line break, you can easily make code readable after
preprocessing simply by using a search and replace tool.

The CPP library demo now includes a mini test file for testing compiler
limits. I'm happy to accept additional tests. I'm primarily interested in
getting code that would be used in actual production code, so if there is
interest, I'd like to see people making test implementations of some of
their repetitive stuff using the CPP library. Note that for testing the
preprocessor limits, the stuff doesn't have to actually compile properly -
it's only required to preprocess.

----- Original Message -----
From: "John Maddock" <John_Maddock_at_[hidden]>
To: <boost_at_[hidden]>
Sent: Sunday, May 20, 2001 14:21
Subject: [boost] Interest in CPP meta programming library?

> >I'm thinking of submitting a small CPP or C Pre Processor meta
> >library into Boost. For this reason I have uploaded a trivial demo subset
> of
> >the library into the Files section/Vault. You can find the files under
> >CPP folder. The rest of this message contains a motivated example of the
> use
> >of a particular feature of the library.
> I'm impressed, with one caveat: macros are very very hard to debug if the
> compiler decides to choke on something within them - even running the code
> through the preporcessor first doesn't alway help as the preproceesed code
> all ends up on one line (this is one reason why some compilers choke on
> complex preprocessed code BTW - they seem to have a line length limit).
> Even so I would like to see more of this, it could be very useful indeed,
> not least as the motivating example is in my code ! :-)
> - John Maddock

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