Negative indexes

# Lich (9 years ago)

It would be great if we could use negative indexes, -1 being the index of the last element of an Array or of an Array-like object . Also, an alias for console.log would be more than welcome.

Hi! It would be great if we could use negative indexes, -1 being the index
of the last element of an Array or of an Array-like object . Also, an alias
for console.log would be more than welcome.
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# Jeremy Martin (9 years ago)

A similar proposal was recently brought up - please check out esdiscuss.org/topic/javascript-language-feature-idea to browse the existing conversation on it.

A similar proposal was recently brought up - please check out
https://esdiscuss.org/topic/javascript-language-feature-idea to browse the
existing conversation on it.

On Mon, Feb 1, 2016 at 2:35 PM, Lich <6pozmo at gmail.com> wrote:

> Hi! It would be great if we could use negative indexes, -1 being the index
> of the last element of an Array or of an Array-like object . Also, an alias
> for console.log would be more than welcome.
>
> _______________________________________________
> es-discuss mailing list
> es-discuss at mozilla.org
> https://mail.mozilla.org/listinfo/es-discuss
>
>


-- 
Jeremy Martin
661.312.3853
http://devsmash.com
@jmar777
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# C. Scott Ananian (9 years ago)

arr.slice(-1)[0] does what you want, I think. --scott

`arr.slice(-1)[0]` does what you want, I think.
 --scott

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# Felipe Nascimento de Moura (9 years ago)

Yes, that would do what he wants...but I like the idea of using arr[-1], though!! It just makes sense, to me! Specially if you want to use reversed loops, for example.

Yes, that would do what he wants...but I like the idea of using
```arr[-1]```, though!!
It just makes sense, to me!
Specially if you want to use reversed loops, for example.

On Mon, Feb 1, 2016 at 5:46 PM C. Scott Ananian <ecmascript at cscott.net>
wrote:

> `arr.slice(-1)[0]` does what you want, I think.
>  --scott
> 
> _______________________________________________
> es-discuss mailing list
> es-discuss at mozilla.org
> https://mail.mozilla.org/listinfo/es-discuss
>
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# Logan Smyth (9 years ago)

Felipe, this has been discussed in the other thread that was just linked: esdiscuss.org/topic/javascript-language-feature-idea. arr[-1] is not a workable solution because it could break existing code.

Felipe, this has been discussed in the other thread that was just linked:
https://esdiscuss.org/topic/javascript-language-feature-idea. `arr[-1]` is
not a workable solution because it could break existing code.

On Mon, Feb 1, 2016 at 4:43 PM, Felipe Nascimento de Moura <
felipenmoura at gmail.com> wrote:

> Yes, that would do what he wants...but I like the idea of using
> ```arr[-1]```, though!!
> It just makes sense, to me!
> Specially if you want to use reversed loops, for example.
>
>
>
> On Mon, Feb 1, 2016 at 5:46 PM C. Scott Ananian <ecmascript at cscott.net>
> wrote:
>
>> `arr.slice(-1)[0]` does what you want, I think.
>>  --scott
>> 
>> _______________________________________________
>> es-discuss mailing list
>> es-discuss at mozilla.org
>> https://mail.mozilla.org/listinfo/es-discuss
>>
>
> _______________________________________________
> es-discuss mailing list
> es-discuss at mozilla.org
> https://mail.mozilla.org/listinfo/es-discuss
>
>
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# Felipe Nascimento de Moura (9 years ago)

hm...yep...you are right!

hm...yep...you are right!

On Mon, Feb 1, 2016 at 10:51 PM Logan Smyth <loganfsmyth at gmail.com> wrote:

> Felipe, this has been discussed in the other thread that was just linked:
> https://esdiscuss.org/topic/javascript-language-feature-idea. `arr[-1]`
> is not a workable solution because it could break existing code.
>
> On Mon, Feb 1, 2016 at 4:43 PM, Felipe Nascimento de Moura <
> felipenmoura at gmail.com> wrote:
>
>> Yes, that would do what he wants...but I like the idea of using
>> ```arr[-1]```, though!!
>> It just makes sense, to me!
>> Specially if you want to use reversed loops, for example.
>>
>>
>>
>> On Mon, Feb 1, 2016 at 5:46 PM C. Scott Ananian <ecmascript at cscott.net>
>> wrote:
>>
>>> `arr.slice(-1)[0]` does what you want, I think.
>>>  --scott
>>> 
>>> _______________________________________________
>>> es-discuss mailing list
>>> es-discuss at mozilla.org
>>> https://mail.mozilla.org/listinfo/es-discuss
>>>
>>
>> _______________________________________________
>> es-discuss mailing list
>> es-discuss at mozilla.org
>> https://mail.mozilla.org/listinfo/es-discuss
>>
>>
>
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