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 <[email protected]> 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, <[email protected]> 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 <[email protected]> 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 <[email protected]> >>> wrote: >>> >>>> >>>> >>>> ---------- Forwarded message --------- >>>> From: guest271314 <[email protected]> >>>> 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: <[email protected]> >>>> >>>> >>>> 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(a[0]) == 0 || Math.abs(a[0]) == -0) >>>> && a.length == 1) >>>> >>>>
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