The boost spirit library allows for direct translation of a BNF grammar into C++ code which generates a parser at compile time. The following example, from http://spirit.sourceforge.net/distrib/spirit_1_8_3/libs/spirit/doc/introduction.html truly does this concept more justice than I could: BNF Example:
It’s been now more than a year since we got back from our trip to Ireland, and sometimes I just think about going back there. I don’t know really how to describe it, but I feel like the country is a part of me now. I’ve been to most of western Europe but Ireland, and particularly the Donegal region, has affected me than any other country I have been to. You can read about our trip here, if you want to.
Just a few days ago I spent way too long looking at the boost libraries to see if there was a way of adapting a std::fstream to an iterator type. I didn’t find what I was looking for and did what I wanted a completely different way.
boost contains a preprocessor metaprogramming libary. What this means, simply, is that it is possible to write code which generates code. The full docs are here.
Let’s say I’m doing some cryptography work. I’ve just received a signed message from another machine and I want to validate the signature. I have a few options:
I went to BoostCon two weeks ago and as such have a ton on my mind and a lot to blog about. Most notable are the Boost Spirit and Metaprogramming libraries. I also have been learning better how to put templates to use in the real world. I’ll start with an entry about templates, then move forward with reviewing my boost notes and blogging about them as I can.
Today I will be covering all 4 of the C++ cast operators.
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The const qualifier defines an object as being constant. There are several uses for const:
The class keyword is used when declaring or defining a class or a templated class. For instance:
