Thank you for your answer. I hope to see std.complex integrated in the next release of dmd. I am mainly interested in scientific (i.e. numerical) computations, so a good numerical library (GSL, Lapack etc.) would be welcome in D.
I like the std.algorithm, though. Eles PS Thanks to everybody for pointing me to Thunderbird and Opera. Both are nice. PS2 What does really means to use LLVM or GCC backends for dmd? Is a front-end somewhat like a parser (or bytecode compiler) and the back-end something like an assembler?