Performance

• Pointing aliasing can slow you down ~30% compared to FORTRAN

• Operator overloading can cause severe performance degradation

  • temporaries creation/destruction, memory allocations, …
  • inefficient use of registers
  • Can be overcome by “template metaprogramming” techniques, but requires modern compilers

• Good OO practice usually has more function calls

  • Generally not an issue - the small function calls can be inlined or don’t take much aggregate time

• Virtual function vs. function calls is a non-issue

  • it’s very cheap, and if you are using virtual functions you have to do the if somewhere anyway

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