Re: [PATCH] pass constants as first argument to st_mult()
- From
Junio C Hamano <gitster@pobox.com>
- Date
- Aug 3, 2016, 19:58 UTC
- Message-ID
- <xmqqh9b18w0e.fsf@gitster.mtv.corp.google.com>
- In-Reply-To
- <20160803194913.cz6xiai3g5r3sghq@sigill.intra.peff.net>
Jeff King <peff@peff.net> writes:
Show 24 quoted lines
> On Wed, Aug 03, 2016 at 12:41:30PM -0700, Junio C Hamano wrote: > >> On Wed, Aug 3, 2016 at 12:13 PM, Jeff King <peff@peff.net> wrote: >> > On Mon, Aug 01, 2016 at 03:31:45PM -0700, Junio C Hamano wrote: >> > >> > I think in my head I rewrite any multiplication like "N of M" as having >> > "N" as the smaller number. I.e., it is conceptually simpler to me to >> > count five 30's, then 30 five's (even though I do not implement it in my >> > head as a sequence of additions, of course; I'd probably do that >> > particular case as "half of ten 30's"). >> > >> > I have no idea if that's cultural or not, though. >> >> Now, when you say "count five 30's", which one do you have >> in mind? 5x30, or 30x5? >> >> If you meant the former, I think that _is_ cultural. I am pretty >> sure that I was taught in school(s) to read 5x30 as adding 5 >> thirty times. > > I think I would say "30x5" in that case. But I'm not sure where that > comes from, and I'm not even 100% sure that I would say that (after > thinking about it, it's hard for me to figure out what I would have done > if I _hadn't_ just thought about it).
By the way, reading "30x5" as "count five 30's" disagrees with calloc(nmemb=5, size=30), which wants to add 30-byte necessary for each member 5 times to allocate 150 bytes.
Anyway, this tangent is long enough ;-)