Issue #14399 has been updated by jzakiya (Jabari Zakiya).


I looked here https://ruby-doc.org/core-2.5.0/Enumerable.html and didn't see
that method, so I didn't know it existed. But `multiply` would also work.

Where in the docs is `product`?

The Ruby `product` then causes a conflict with the Crystal definition/use.

----------------------------------------
Feature #14399: Add Enumerable#product
https://bugs.ruby-lang.org/issues/14399#change-69802

* Author: jzakiya (Jabari Zakiya)
* Status: Open
* Priority: Normal
* Assignee: 
* Target version: 
----------------------------------------
For similar reasons for creating `Enumerable#sum` a companion method
`Enumerable#product` is also very useful. Taking the product of
numbers in arrays is a common operation in many numerical algorithms,
especially in number theory and cryptography, and its optimization in
Ruby will make it more conducive to math heavy algorithms and tasks.

This

```
> [2,3,5,7].reduce(:*) => 210
```

can be optimized to this

```
> [2,3,5,7].product => 210
```

It should also allow an initial value

```
> [2,3,5,7].product(2) => 420

> [2,3,5,7].product(0.5) => 105
```
Crystal already has this `method`.



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