...and...because that is how computers work so the understanding will itself be interesting and useful. It can be nice to see how things work "under the hood."
On Sat, Jul 22, 2017 at 9:40 PM, Egon <egonel...@gmail.com> wrote: > Generally when you ask that question you probably won't need to use them. > > The main reasons you would use them: > > 1. bitflags -- allows to easily specify a set of 8 to 64 elements easily ( > https://play.golang.org/p/DZj9FerK19) > 2. fast ways to compute something -- see https://graphics.stanford.edu/ > ~seander/bithacks.html, http://aggregate.org/MAGIC/ > 3. packing -- e.g. when you have seven 3 bit numbers then you can fit 21 > of them into a 64bit number; to pack and extract you would need to use bit > operations; similarly many packing algorithms use them for that reasons > 4. bit parallel operations - when you have several packed numbers you can > do some operations in bit parallel, e.g. you could add together 16 3bit > numbers together in two computer cycles using a 64bit number. > 5. There are also some algorithms that exploit bit operations, e.g. > shift-or search http://www-igm.univ-mlv.fr/~lecroq/string/node6.html > > + Egon > > On Saturday, 22 July 2017 20:36:14 UTC-7, Alexey Dvoretskiy wrote: >> >> Hello golang-nuts. >> >> I'm new to Go language and have no solid experience with C/C++. >> I was a database programmer with some Python and I was able to get around >> without bitwise operators easily. >> Of course, I ran into tons of issues with performance, deployment and >> other stuff. That is why I switched to Go. >> >> The question is what are practical applications of bitwise operations in >> Go and when I should use/learn them? >> >> Thanks >> Alex >> > -- > You received this message because you are subscribed to the Google Groups > "golang-nuts" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to golang-nuts+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/d/optout. > -- Michael T. Jones michael.jo...@gmail.com -- You received this message because you are subscribed to the Google Groups "golang-nuts" group. To unsubscribe from this group and stop receiving emails from it, send an email to golang-nuts+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
