v4 schemas

[GreenArrow18]

What is the equivalent of schemas in v4? Is it union? Or select? What's the difference?

Also, there used to be:
encode(schema_name, data)

How to do this in v4 now?

Thanks.

[mike-git374]

I created new repository with new user here https://github.com/PackBytes/pack

selectOne is the old schemas
selectMany is the new union

schema = selectOne({ field1: bool, field2: bool })

const { encode, decode } = PackBytes(schema)

data = { field1: true }

encode(data)

[GreenArrow18]

This new repository appears to be missing now. Can this be merged to main, if there were changes? Thanks!

[mike-git374]

The new repo had good updates I believe. I ended up deciding manually coding the encoding and decoding was the best option so I removed the repo. I can look for the repo and merge into this repo when I'm back at computer

[GreenArrow18]

Hi. Looking at it now, it seems the exports have been changed.

I can only access the Pack object, but not the individual types? (e.g. bool, bits etc)

[mike-git374]

Did you check the readme, you deconstruct the exported object. This was done to simplify the code in pack.mjs, it allows removing a couple lines. Aiming for maximum simplicity and least amount of code

[GreenArrow18]

Hello. It's some Typescript error that I did not encounter in the old version.

Got everything working now. Thanks!

[GreenArrow18]

Hello again.

In the old version, the following schema was possible:
schema = string([ 'str1', 'str2', .. ]) // any of specific strings, auto-maps to integer

This saves significant space, since the strings are known already. What's the equivalent in the new repo?

Above still works, but it looks like it doesn't auto-map to integers anymore?

[mike-git374]

You can use SelectOne but I agree string('1', '2') is more convenient, I will add this back and it will be a shortcut for selectOne

[GreenArrow18]

I used to be able to pass an array of string, like in your stock exchange example

exchange: string([ 'KRAKEN', 'NASDAQ', 'NYSE', 'OMXSTO', 'CBOE', 'AMEX', 'TVC', 'FX' ])

This is quite useful, as it saves a lot of space. Still works now as is, but I noticed they don't seem to be auto-mapped to integers anymore.

I can't quite grasp how to use selectOne for this, so I'll just wait for your update 😃

[mike-git374]

Ok should be good, tests passing 4027e35

[GreenArrow18]

All good now. Thanks!