red/help

For help with your code, suggestions and ideas, and learning Red.

amreus

@amreus

@9214 Yes I think I've got it now. Thank you.

Greg T

@gltewalt

Is there a make/to matrix somewhere?

ne1uno

@ne1uno

https://github.com/toomasv/matrix

Toomas Vooglaid

@toomasv

@gltewalt Maybe not quite what you mean, but may be of help also: conversion-lab.red. Clicking on entries in last column converts values in table.

Greg T

@gltewalt

That will be handy, but scanning the source quickly, is it missing image! ?

lay: layout [button “Hi”]
to image! lay ==> A big ball of none ?

Toomas Vooglaid

@toomasv

Yeah, image was left out as it seemed to be not useful for conversions. What would you make of this e.g.:

>> p: to-lit-path draw 2x2 [box 0x0 1x1]
== 'make image! [2x2 #{303030303030101010101010}]
>> type? :p
== lit-path!
>> p
== 'make image! [2x2 #{303030303030101010101010}]

Greg T

@gltewalt

In R2 to-image is only for converting from a face object to image!. I can’t think of any other conversions that deal with images that make sense. (Right now, at least. Brain fog.)

Toomas Vooglaid

@toomasv

@gltewalt In your above example, it should be:

lay: layout [button "Hi"]
view/no-wait lay
to image! lay
;== make image! [136x76 #{
;    0000000000002B2B2B2B2B2B2B2B2B2B2B2B2B2B2B2B2B2B2B2B2B2B2B2B
;...

Greg T

@gltewalt

Ah, I see

Of course. 😁

nedzadarek

@nedzadarek

Can you turn off blurriness when scaling:

im: make image! [2x2]
im/1: red
im/2: blue
im/3: green
im/4: purple
view [base 400x400 draw [scale 80 80 image im]]

Or do I have to do it on my own (not a problem)?

Boleslav Březovský

@rebolek

@nedzadarek What about this?

nedzadarek

@nedzadarek

@rebolek doesn't work.

Boleslav Březovský

@rebolek

:-(

Toomas Vooglaid

@toomasv

@nedzadarek Vector graphics, alias Draw is the way, IMO:

view [base 400x400 draw [scale 80 80 [
    pen off 
    fill-pen red box 0x0 1x1 
    fill-pen blue box 1x0 2x1 
    fill-pen green box 0x1 1x2 
    fill-pen purple box 1x1 2x2
]]]

nedzadarek

@nedzadarek

@toomasv I would do this but I want to do some operations on image!.

hiiamboris

@hiiamboris

I would also like to see nearest-neighbor upscaling possible out of the box

Abdullah Yiğiterol

@abdllhygt

hey!

Boleslav Březovský

@rebolek

Hey @abdllhygt ! What's new?

Abdullah Yiğiterol

@abdllhygt

@rebolek i'm working about my programming language

and have a question

how can i change keywords? like true/false

Boleslav Březovský

@rebolek

there are no keywords, you can do jo: true ne: false and use jo and ne

Abdullah Yiğiterol

@abdllhygt

but that is like:

>> jo: true
== true
>> a: jo
== true

i want like that:

>> a: jo
== jo

Boleslav Březovský

@rebolek

How are you implementing your language?

Directly in Red or with parse?

Abdullah Yiğiterol

@abdllhygt

in Coz:

>> 5*5=25
== doğru
>> a: 5*5=25
== true

i parse codes and change to Red

Boleslav Březovský

@rebolek

if you are using it in parse then you can have whatever value for true there. But in Red, true's literal value is true and you can't do much about that without changing sources.

Vladimir Vasilyev

@9214

@abdllhygt wrong way: hack Red runtime and change this line. Correct way: extend lexer and runtime of your language to support any kind of literal logic values you want.

Abdullah Yiğiterol

@abdllhygt

Coz have a shell like Red and it return results. If result is a comparison, it will return true or false. I guess i find the answer now..

@9214 Is lexer "change to Red"?

I add if to result codes. If result is true or false, it changes them.

Thanks for helping @rebolek @9214

Boleslav Březovský

@rebolek

@abdllhygt you're welcome

@abdllhygt don't return true or false, but you're values and then map them to true/false when interacting with Red.

Abdullah Yiğiterol

@abdllhygt

yes!

Gregg Irwin

@greggirwin

On JSON, we'll have an official codec, and there are a number of tests for it, yes.

The main delay has been finalizing design on JSON null values and Red map! changes under discussion.

spTorin

@spTorin

Someone can help with parse? Have rule: [any alpha consonant "eri" consonant any alpha], where alpha - full alphabet, consonant is consonant. But any alpha matched all given word to end.

Boleslav Březovský

@rebolek

@spTorin any matches zero and more occurrences. Try some.

spTorin

@spTorin

But before first consonant can be zero letter.

Boleslav Březovský

@rebolek

If alpha contains whole alphabet, then it will match everything. You need some other charset that will have difference alpha consonant. Can there be zero or one letter, or even more? If only zero or one, opt is what you want.

spTorin

@spTorin

Just my bad english. I have token: [consonant "eri" consonant]. Need parse words for it. For example "aMERICan" and "VERIFy"

Boleslav Březovský

@rebolek

>> consonant: charset "bcdfghjklmnpqrstvwxz"
== make bitset! #{0000000000000000000000003BBEFBA0}
>> vowel: charset "aeiouy"
== make bitset! #{00000000000000000000000044410440}
>> alphabet: union consonant vowel
== make bitset! #{0000000000000000000000007FFFFFE0}
>> parse "american" [opt vowel consonant "eri" consonant any alphabet]
== true
>> parse "verify" [opt vowel consonant "eri" consonant any alphabet]
== true

spTorin

@spTorin

>> parse "ordering" [opt vowel consonant "eri" consonant any alphabet]
== false

Boleslav Březovský

@rebolek

ok, so there can be more consonants:

>> parse "ordering" [opt vowel some consonant "eri" consonant any alphabet]
== true

spTorin

@spTorin

>> parse "zooperist" [opt vowel some consonant "eri" consonant any alphabet]
== false

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