4 ms·

Self-inlining anonymous closures in C++

• omnigoat 16y ago
  Sorry, I can't see how this is an improvement over Boost::Phoenix: http://www.boost.org/doc/libs/1_44_0/libs/spirit/phoenix/doc/html/phoenix/introduction.html http://www.boost.org/doc/libs/1_44_0/libs/spirit/phoenix/doc...
  • util 16y ago
    Thanks for the pointer!
    • jrockway 16y ago
      Now you get to run yourself in Valgrind to see if your guess about who's supposed to free it is correct.
  • mattmight 16y ago
    It isn't meant to be an improvement or a replacement. It's just a tutorial on how such things are done. :)
• jongraehl 16y ago
  $ in C++ identifiers is a nonstandard extension that gcc allows on some platforms - cool (and not portable).
  • gjm11 16y ago
    You could use, say, "ARG_" instead and it would work just the same. (Phoenix uses "arg".)
• shin_lao 16y ago
  A lot of people will read this and think "damn C++ is such an ugly language, it should never allow the programmer to do this!". The reality is that that kind of technique allows to produce extremely fast code because the compiler has got so much "certain" information at compile time that it can optimize very aggressively. It's more powerful than vanilla C macros because it works with the compiler, not the pre-processor.
  • andymorris 16y ago
    C++ is the highest-level language that I can accurately guess the assembly that will be actually run by the processor. YMMV whether that's a blessing or a curse, though!