It's entirely possible that I'm being thick here, but can you expand on the use case?
- The initial link that you posted results in a code challenge that was voted down to a negative score as a result of ambiguity in the challenge description, and... - the two expressions you provided are already valid JavaScript. - I'm also confused as to why we'd want `1.074` to convert to `[1.0, 7, 4]`. How is that different from, say, `1.74` also converting to `[1, 7, 4]` (given that `1 == 1.0`)? Going back to our request for a "real world" use case, we're asking you to provide an example of something that you'd want to do that has value external to the proposal itself. That is, if I proposed a `toX()` method that always converted the receiver to the character "X", I would need to provide a real world justification beyond "it's easier to convert things into the letter X". So, again, what is a real world utility of this transformation? On Thu, Mar 7, 2019 at 5:22 PM guest271314 <guest271...@gmail.com> wrote: > Have you read the proposal, and the first response to your inquiry? It is > simpler to have the ability to add, subtract, divide, or otherwise > manipulate individual nth indexes of an integer or decimal represented as > an array of integers potentially containing one decimal than trying to > perform the same mathematical operations on a number in JavaScript > (essentially broken in JavaScript due to the floating-point number issues). > > Will re-post a use case, again > ~~(128.625*9*1.074)//1243 > ~~(128.625*9*1.144)//1324 where if the requirement is to increment the > decimal portion of 1.074 or 1.144 if the decimal is first converted to an > array, we can use array methods to tests the matches we are looking for. > For example, [1.0, 7, 4] > > representation of 1.074 allows each of the portions of the number to be > adjusted independently. Since we have previously defined a .toNumber() > Array method we know we can get the value of the array as a JavaScript > number. > > On Thu, Mar 7, 2019 at 10:12 PM Jeremy Martin <jmar...@gmail.com> wrote: > >> By "real world" we mean somewhere outside of a code challenge or >> similarly low utility program context. >> >> You mentioned statistics, for example. Can you reference a specific >> example from that domain where these methods would offer an advantage? >> >> On Thu, Mar 7, 2019, 5:05 PM guest271314 <guest271...@gmail.com> wrote: >> >>> Not sure what you mean by "real world" use case. Described at least one >>> use case at the proposal. Statistics; graphs; number and integer >>> manipulation using indexes of arrays with ability to convert manipulated >>> array back to number. >>> >>> On Thu, Mar 7, 2019 at 9:56 PM Naveen Chawla <naveen.c...@gmail.com> >>> wrote: >>> >>>> What is the real world use case, presuming it's not just an academic >>>> exercise >>>> >>>> On Thu, 7 Mar 2019, 9:08 pm guest271314, <guest271...@gmail.com> wrote: >>>> >>>>> Ability to adjust *nth* digit of an integer or decimal by adjusting >>>>> decimal or integer at *nth* index of array, to try to solve OEIS >>>>> A217626 oeis.org/A217626 directly, for example >>>>> ~~(128.625*9*1.074)//1243 >>>>> ~~(128.625*9*1.144)//1324 >>>>> where the decimal portion can be manipulated by referencing the index >>>>> of an array, then converting the array back to a number. >>>>> >>>>> On Thu, Mar 7, 2019 at 8:55 PM Jeremy Martin <jmar...@gmail.com> >>>>> wrote: >>>>> >>>>>> Can you explain the motivation for this proposal? >>>>>> >>>>>> At first blush, this seems like an incredibly arbitrary pair of value >>>>>> conversion utilities. Are there real world applications for this? >>>>>> >>>>>> On Thu, Mar 7, 2019 at 3:43 PM guest271314 <guest271...@gmail.com> >>>>>> wrote: >>>>>> >>>>>>> >>>>>>> >>>>>>> ---------- Forwarded message --------- >>>>>>> From: guest271314 <guest271...@gmail.com> >>>>>>> Date: Thu, Mar 7, 2019 at 8:35 PM >>>>>>> Subject: Proposal: 1) Number (integer or decimal) to Array 2) Array >>>>>>> to Number (integer or decimal) >>>>>>> To: <es-discuss@mozilla.org> >>>>>>> >>>>>>> >>>>>>> Original concept: Integer or decimal to array and array to decimal >>>>>>> or integer https://codegolf.meta.stackexchange.com/a/17223 >>>>>>> >>>>>>> Proof of concept (with bugs) >>>>>>> >>>>>>> function numberToArray(n) { >>>>>>> >>>>>>> if (Math.abs(n) == 0 || Math.abs(n) == -0) { >>>>>>> return [n] >>>>>>> } >>>>>>> >>>>>>> const r = []; >>>>>>> >>>>>>> let [ >>>>>>> a, int = Number.isInteger(a), d = g = [], e = i = 0 >>>>>>> ] = [ n || this.valueOf()]; >>>>>>> >>>>>>> if (!int) { >>>>>>> let e = ~~a; >>>>>>> d = a - e; >>>>>>> do { >>>>>>> if (d < 1) ++i; >>>>>>> d *= 10; >>>>>>> } while (!Number.isInteger(d)); >>>>>>> } >>>>>>> >>>>>>> for (; ~~a; r.unshift(~~(a % 10)), a /= 10); >>>>>>> >>>>>>> if (!int) { >>>>>>> for (; ~~d; g.unshift(~~(d % 10)), d /= 10); >>>>>>> g[0] = g[0] * (1 * (10 ** -i)) >>>>>>> r.push(...g); >>>>>>> } >>>>>>> >>>>>>> return r; >>>>>>> } >>>>>>> function arrayToNumber(a) { >>>>>>> if ((Math.abs<span >>>>>>> class="gmail-m_2662878951066317968m_7497912379499730396gmail-m_-49591865513921258gmail-m_191674293613409874m_-1290191079188355796gmail-pun" >>>>>>> >>>>>>> style="margin:0px;padding:0px;border:0px;font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;line-height:inherit;font-family:inherit; >>>>>>> >>>>>>> -- Jeremy Martin 661.312.3853 @jmar777 <https://twitter.com/jmar777> / @j <https://stream.live/j>
_______________________________________________ es-discuss mailing list es-discuss@mozilla.org https://mail.mozilla.org/listinfo/es-discuss
