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Isiah Meadows [email protected] www.isiahmeadows.com On Wed, Nov 21, 2018 at 7:16 PM Gbadebo Bello <[email protected]> wrote: > > Yh, i felt the same way about the rest also but thought it would be nice to > atleast get feedback before concluding. > > On Wed, Nov 21, 2018, 06:08 Isiah Meadows <[email protected]> wrote: >> >> Not sure these belong in the standard library itself. I could see max and >> min being there (these are very broadly useful), but the others, not so >> much. I'd also like both max and min accept an optional comparison callback >> of `(a, b) => a < b`. But the rest seem too narrowly useful IMHO. >> On Tue, Nov 20, 2018 at 21:38 Gbadebo Bello <[email protected]> >> wrote: >>> >>> The array object has no method for finding the minimum value of an array of >>> numbers and the Math.min() method doesn't work on Arrays right out of the >>> box. I'll have similar issues if i wanted to return the maximum number, the >>> mean, mode, median or standard deviations in any array of numbers. >>> >>> This is a bit tasky and can be done in just a line of code if there where >>> Array.prototype.{method}() for it. >>> >>> My proposal is, Arrays should have the following prototypes >>> >>> Array.prorotype.min() >>> Array.prorotype.max() >>> Array.prorotype.mean() >>> Array.prorotype.median() >>> Array.prorotype.mode() >>> Array.prototype.stdev() >>> >>> The mean, median and mode would be very useful when visuali >>> Here's is a polyfill of what i'll love to propose. >>> >>> //Array.prototype.min() >>> Array.prototype.min = function(){ >>> let arrayVal = this; >>> let checkNonNumbers = this.some(element => { >>> if(typeof(element) !== typeof(Math.random())){ >>> throw new Error("This Array.prorotype.min() takes only array of numbers as >>> arguments"); >>> } >>> else{ >>> return true; >>> } >>> }); >>> function findMin(validated){ >>> if(validated == true){ >>> return Math.min.apply( Math, arrayVal ); >>> } >>> } >>> return findMin(checkNonNumbers); >>> } >>> >>> Similarly, Array.prototype.max() can be implemented as above. >>> >>> >>> >>> //Array.prototype.median() >>> Array.prototype.median = function(){ >>> let values = this; >>> function median(values){ >>> values.sort(function(a,b){ >>> return a-b; >>> }); >>> if(values.length ===0) return 0 >>> var half = Math.floor(values.length / 2); >>> if (values.length % 2) >>> return values[half]; >>> else >>> return (values[half - 1] + values[half]) / 2.0; >>> } >>> return median(numbers) >>> } >>> _______________________________________________ >>> es-discuss mailing list >>> [email protected] >>> https://mail.mozilla.org/listinfo/es-discuss _______________________________________________ es-discuss mailing list [email protected] https://mail.mozilla.org/listinfo/es-discuss
