red/docs

Red-related user documentation repository

hiiamboris

@hiiamboris

Do we have some kind of equality rules matrix for all datatypes somewhere? ==/=? are somewhat trivial, but I'm interested in =.

GiuseppeChillemi

@GiuseppeChillemi

@hiiamboris Very interesting topic. I have in my (long) to-do list this and other tables.

Gregg Irwin

@greggirwin

@hiiamboris

I thought there was a matrix somewhere, but can't find it right now.

@meijeru has notes in his spec about comparison rules.

hiiamboris

@hiiamboris

First link is a comparison in the sense of "what's best for my case" though ;)

hiiamboris

@hiiamboris

Rudolf has gathered some good info :+1:. I didn't know about this for example:

>> 100% = 0:0:1
== true

Gregg Irwin

@greggirwin

True on aggregate comparison. Sorry for the false positive.

GiuseppeChillemi

@GiuseppeChillemi

I have found another difference worth documenting between Red and Rebol: the former is able to convert an object to block, the latter isn't. Do you confirm this?

Rebol

>> probe to-block context [a: 1 b: 2]
[make object! [
        a: 1
        b: 2
    ]]
== [make object! [
        a: 1
        b: 2
    ]]
>>

Red

>> probe to-block context [a: 1 b: 2]
[a: 1 b: 2]
== [a: 1 b: 2]

Could I enter it writing exactly:
Red to-block is able to convert objects but Rebol isn't
?

dsunanda

@dsunanda

Rebol can do it - but a different way:

 probe third context [a: 1 b: 2]
[a: 1 b: 2]

GiuseppeChillemi

@GiuseppeChillemi

Thanks, so it's worth documenting it but in a different way.

Oldes Huhuman

@Oldes

@GiuseppeChillemi have you noticed, that there is multiple Rebol versions? In Rebol3 it is possible:

>> to-block object [a: 1 b: 2]
== [
    a: 1
    b: 2
]

also:

>> body-of object [a: 1 b: 2]
== [
    a: 1
    b: 2
]

GiuseppeChillemi

@GiuseppeChillemi

Yes, I have noticed. It's Rebol2 which can't handle object to do in to-block

Rudolf Meijer

@meijeru

Inspired by this I tried to-path <object> and it worked (should not, in my opinion). I have raised issue #4420 for this.

GiuseppeChillemi

@GiuseppeChillemi

Page not found!

Rudolf Meijer

@meijeru

It is an issue in red/red repository, not in red/docs, so the link that github makes for free is not useful. Just go to the main repository.

hiiamboris

@hiiamboris

Found an undocumented feature: https://github.com/red/red/issues/4418#issuecomment-621183984
continue works on W7 for me, stop and done don't. Although View docs say:

Is this something unofficial/undecided or just missing in documentation?

Nenad Rakocevic

@dockimbel

@hiiamboris Changed several times, the version in the code is the right one for now. Still needs some extra work.

Toomas Vooglaid

@toomasv

done has worked for me on W10.

hiiamboris

@hiiamboris

Oh. You're right, done is working too. modal just hides the window after closing so probably didn't notice it was still in the taskbar :D

Rudolf Meijer

@meijeru

On ref! documentation: Doc just re-allowed / in ref! literals (commit 9fc4896) so this needs to be updated, I think.

Gregg Irwin

@greggirwin

Yes.

Maciej Łoziński

@loziniak

Hi! Is it just me or the the official Red docs are down?

ping doc.red-lang.org
ping: doc.red-lang.org: Temporary failure in name resolution

hiiamboris

@hiiamboris

just you

GiuseppeChillemi

@GiuseppeChillemi

Any help brings you to the wrong conclusion that if a value is not none or false than it is true (logic).

>> help any
USAGE:
     ANY conds

DESCRIPTION: 
     Evaluates, returning at the first that is true. 
     ANY is a native! value.

ARGUMENTS:
     conds        [block!] 

>> any [false 22 33]
== 22

...Evaluates, returning at the first that is true.

But in Redbol logic:

>> true = 22
== false
>>

I would suggest changing this help text.

Gregg Irwin

@greggirwin

Agreed. We can use the text from R2 unless someone has a better suggestion.

Evaluates and returns the first value that is not FALSE or NONE.

Please file a ticket for it @GiuseppeChillemi.

And include all in there.

Semseddin Moldibi

@endo64

any : Evaluates and returns the first value that is not FALSE or NONE, (returns) NONE otherwise
all : Evaluates and returns at the first FALSE or NONE, (returns the) last value otherwise

And better to note (did already )

>> all []
== none ; Red
== true ; R2 & R3

Gregg Irwin

@greggirwin

Man, the wording is a challenge here.

any : Evaluates and returns the first value that is not FALSE or NONE; otherwise NONE
all : Evaluates and returns at the first FALSE or NONE; otherwise returns the last value 

any : Evaluates and returns either NONE or the first value that is not FALSE or NONE
all : Evaluates and returns either NONE, at the first FALSE or NONE, or the last value

Beyond this "truthy" starts creeping in as a shortcut. :^\

Semseddin Moldibi

@endo64

any : Evaluates and returns the first non-falsy value (or NONE)
all : Evaluates and returns the last truthy value (or NONE)

I don't know if falsy and truthy are real words.
We can remove or NONE parts it is easy to guess it will return none if the explanation doesn't meet.

Gregg Irwin

@greggirwin

"returns at" is a little ambiguous, given at and series values. It's not terrible though, even the R2 strings. As you say, they aren't complex funcs and a quick test is a good learning exercise.

I also thought to remove "Shortcut AND/OR", even though help can use them. Any/all will get buried in all the other results.

GiuseppeChillemi

@GiuseppeChillemi

done: red/red#4469

hiiamboris

@hiiamboris

Later I had to add a certificate exception, which it issued to gitbooks, not for red-lang.org ;)

Toomas Vooglaid

@toomasv

hiiamboris

@hiiamboris

Yeah, similar thing

But for some small time I couldn't even ping it - no IP address for the DNS name

Toomas Vooglaid

@toomasv

Yeah, it has troubled me few days already. Curiously, in Chrome it works ok.

Maciej Łoziński

@loziniak

On ← doc.red-lang.org – I also cannot see it. Already mentioned that ↑ some time ago. @nedzadarek

Rudolf Meijer

@meijeru

Same here.

Gregg Irwin

@greggirwin

@x8x, can you look into this?

hiiamboris

@hiiamboris

Yeah, died again :/

https://downforeveryoneorjustme.com/doc.red-lang.org

FLuX LoOP

@x8x

From what i see, GitBook has issues resolving in some areas.

FLuX LoOP

@x8x

Google is their registrar, CloudFlare is their name server, which is pretty solid. They may be playing with configs, 10 minutes ago no NS records and a couple of origin servers where unreachable by IP. Now all seams to work from here.

hiiamboris

@hiiamboris

There was another mirror of Red docs on some site, but can anyone recall the address?

Found

https://red-language-documentation.readthedocs.io/en/latest/

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