HNHacker News
TopNewBestAskShowJobs

pratk

110 karma · joined July 7, 2022

submissionscomments
pratk··on Everything I wish I knew when learning C
Well C does allow "copying" an array if it's wrapped inside a struct, which does not make it O(1). gcc generates calls to memcpy in assembly for copying the array.
pratk··on Everything I wish I knew when learning C
One C idiom that I found pretty useful is Xmacros [1]. For instance, it's used extensively in GCC code-base (.def files).

[1] https://www.drdobbs.com/the-new-c-x-macros/184401387

pratk··on We secretly love meetings (2010)
I work at a company that has been operating remotely since a decade. In our weekly syncs (or 1:1 with manager), there's little to no small talk, and the meeting gets called off if there's not much agenda. For socials, we have a monthly sync, that is voluntary. Both don't get mixed.
pratk··on Erg: a statically typed language that is Python compatible
-fwrapv forces the compiler to handle signed overflow with 2's complement. UB essentially means the compiler is free to do anything, and with the option it chooses the wrapping behavior. See https://stackoverflow.com/questions/47232954/what-does-fwrap...
pratk··on Erg: a statically typed language that is Python compatible
Also, the UB can be mitigated with -fwrapv (if desired) to handle overflowing integers with 2's complement
pratk··on Erg: a statically typed language that is Python compatible
Well, we have defect reports in language specs too: https://www.open-std.org/jtc1/sc22/wg14/www/docs/summary.htm
pratk··on Show HN: C3 – A C alternative that looks like C
Looks interesting, thanks! Just curious, any plans for supporting SIMD, similar to gcc's vector extensions ?