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 <gbahdeybohbe...@gmail.com>
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
>
> 1. Array.prorotype.min()
> 2. Array.prorotype.max()
> 3. Array.prorotype.mean()
> 4. Array.prorotype.median()
> 5. Array.prorotype.mode()
> 6. 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)
> }
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