Preskoči na glavno vsebino

The boring List

If I want to make Rye example from the Emacs screenshot work (previous post), there is quite a list of boring stuff I need to do next. Things that weren't main language design questions so I was jumping over them so far, now have to be done.

One of them is concrete handling of JSON data. Rye is meant to be a practical language, and good at back-end / data exploration tasks. So handling of bigger JSON files should work and be efficient.

That is why we don't want to load, for example, a big JSON and convert it to all boxed Rye values until we really need to.

Rye has an associative datatype (like JavaScript's Object) in the form of Context. And the series datatype (like Array) in the form ob a Block. But rye also has 2 more native types, that are currently named Dict and List.

While context's keys are indexed words, Dict uses ordinary strings and not even Rye-s boxed strings, but unboxed Go-Lang strings. Same is for list, it's a Go slice of unboxed Go-Lang values.

But the API should be the same, as far as it makes sense, to their bulkier cousins.




Next I will need to upgrade the validation dialect to not only work on individual dicts but also lists of dicts. The exact handling of validation errors will also be interesting.

Komentarji

Objavite komentar

Priljubljene objave iz tega spletnega dnevnika

Less variables, more flows example vs Python

In the last blogpost ( Less variables, more flows ) I wrote a quick practical script I needed. It was an uncommon combination of CGI, two GET requests with Cookies and a POST request with Authorization header. I really like practical random/dirty problems, rather than ideal - made up problems to test the language. To get a sense of comparison I rewrote the example 2 times while removing specific Rye features. But that comparison is meaningless to a person that doesn't know Rye or at least Rebol already. So I went on fiverr and made a request for a Python script with these requirements. I got a nicely written Python script that uses functions for each step. To be more comparable, I rewrote the Rye code to a similar structure. Below is the result ... For a next step, it would be interesting, to extract a little simpler example out and add error handling. With Rye-s specific failure handling, I think the difference would become even greater. You can find Rye on github .
Objavite komentar
Preberite več

Ryelang - controlled file serving example and comparison to Python

This is as anecdotal as it gets, but basic HTTP serving functions in Rye seem to be working quite OK. They do directly use the extremely solid Go 's HTTP functions, so that should be somewhat expected. I made a ryelang.org web-server with few lines of Rye code 3 months ago and the process was running ever since and served more than 30.000 pages. If not else, it  seems there are no inherent memory leaks in Rye interpreter. Those would probably show up in a 3 month long running process? And now I got another simple project. I needed to make a HTTP API for some mobile app. API should accept a key, and return / download a binary file in response if the key is correct. Otherwise it should return a HTTP error. So I strapped in and created Rye code below. I think I only needed to add generic methods stat and size? , all other were already implemented, which is a good sign. Of course, we are in an age of ChatGPT, so I used it to generate the equivalent  Python code. It used the ele...
Objavite komentar
Preberite več

Receiving emails with Go's smtpd and Rye

This goes a while back. At some project for user support, we needed to receive emails and save them to appropriate databases. The best option back in the day seemed project Lamson . And it worked well ever since. It was written in Python by then quite known programmer Zed Shaw. It worked like a Python based SMTP server, that called your handlers when emails arrived. It was sort of Ruby on Rails for email. We were using this ever since. Now our system needs to be improved, there are still some emails or attachments that don't get parsed correctly. That isn't the problem of Lamson, but of our code that parses the emails. But Lamson development has been passive for more than 10 years. And I am already moving smaller utilities to Rye.  Rye uses Go, and Go has this nice library smtpd , which seems like made for this task. I integrated it and parsemail into Rye and tested it in the Rye console first. Interesting function here is enter-console , that can put you into Rye console any...
Objavite komentar
Preberite več