IT Hare on Soft.ware
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Programming is a field where tips and tricks are abundant.

IT Hares proudly present their own bag of programming tips and tricks.

Tips & Tricks, page 4:

Random Number Generation

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Quote: “even if your RNG is statistically perfect, people will still complain 🙁 “
Another Quote: “On modern x86 CPUs, single core can generate 150M+ random bytes/second this way (and this is a Damn Lot).”
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Implementing Queues for Event-Driven Programs

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Quote: “full queues SHOULD NOT happen during normal operation”
Another Quote: “With queues-implemented-over-mutexes like the ones we’ve written above, the most annoying thing performance-wise is that there is a chance that the OS’s scheduler can force the preemptive context switch right when the thread-being-preempted-is-owning-our-mutex.”
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C++ Performance: Common Wisdoms and Common “Wisdoms”

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Quote: “over(ab)using C++ features is a different story, we’ll discuss these features below on case-by-case basis”
Another Quote: “Compiler will use all its Next-to-Divine Wisdom to show you that it is smarter than you are, and to ignore most of those inline specifications you carefully wrote.”
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C++ for Games: Performance. Allocations and Data Locality

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Abstract: “Allocations and related lack of spatial locality can be DAMN EXPENSIVE”
Quote: “During the times of Ancient Gamers (also known as times of Atari, ZX Spectrum, and Commodore64), CPUs were running at clock speed of a single-MHz (and one operation usually took several clocks). At the same time, memory run at about the speed comparable to that of CPUs.”
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Network Programming: Socket Peculiarities, Threads, and Testing

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Quote: “I am not saying that this architecture is the only viable one, but it does work for TCP for sure (and performs reasonably well too)”
Another Quote: “The whole task of optimizing performance beyond, say, 20-50K packets/second per box tends to be Quite Elaborated, and involves quite a few things which are platform- and hardware-dependent.”
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Client-Side. Graphics from “D&D of MMOG” upcoming book

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Quote: “Making 3D work is not easy to start with, but making it look good is a major challenge.”
Another Quote: “In such cases of dual visual interfaces, it is paramount to have Logic-to-Graphics layer as described above”
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