cel-spec
edn
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cel-spec
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Apple releases Pkl – onfiguration as code language
My employer uses a combination of Protocol Buffers (for the config schema definition) and Bazel/Starlark (for concrete instantiations). Configs are validated at build time and runtime using CEL (https://github.com/google/cel-spec).
- SQL as API
- AWS Creates New Policy-Based Access Control Language Cedar
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CEL for admission controller with ValidatingAdmissionPolicy in K8s 1.26
The Common Expression Language (CEL) implements common semantics for expression evaluation, enabling different applications to more easily interoperate. https://github.com/google/cel-spec
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Pure Ruby implementation of Google Common Expression Language
Looks like Google invented a specification for a simple "expression language." -> https://github.com/google/cel-spec/blob/master/doc/langdef.md. Writing the expressions feels like writing Java, C++, Go, or TypeScript code. Google then released C++ and Go versions of this langauge as a library.
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A library for evaluating expressions like Google Common Expression Language but for Java
https://github.com/google/cel-spec unfortunately, it's in Go or C++. Of course I can write a binding to them. But is there any other similar that you would know of for Java? My other course of action would be to offload computation to another service using this library in Go, or Jsonnet or Open Policy Agent/Rego based evaluation, which I'd prefer not to. Executing JS in Java via Nashorn also an option but it'd be heavy weight.
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JsonLogic
Having a standard way to share expressions does seem quite useful, especially when it's multilingual.
[0]: https://github.com/google/cel-spec
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Google Cloud: IAM Conditions
There's more information about CEL and its specifications here
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Question about setting up multiple applications using nginx.
Especially when dealing with more complex match rules, I personally much prefer Caddy's matchers over building some weird-ass if constructs in Nginx. It also supports CEL for request matching, giving you access to extremely powerful logic, if you need it.
edn
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Apple releases Pkl – onfiguration as code language
> was utterly surprised how no one ever apparently has thought to create a configuration/templating system that's basically a fancy library on top of Scheme.
There's Clojure's extensible data notation: https://github.com/edn-format/edn
- Why the fuck are we templating YAML? (2019)
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I made a basic python client and ORM for XTDB
A thin language layer around edn/datalog, the query language
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What Is Wrong with TOML?
EDN (Extensible Data Notation) is a subset of Clojure: https://github.com/edn-format/edn
It is:
- Streamable
- Extensible
- Whitespace-insensitive, but there are formatting conventions for readability
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The real reason JSON has no comments
To begin with, EDN is somewhat like the JSON of Clojure. And regarding the code is data/data is code nature of Clojure, it is Clojure. It doesn't have some of the vagaries of JSON, and it is also extensible.
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Ron: Rusty Object Notation
Alien is not a reason something is bad, just that's it's unusual. JSON was a bit alien when it first arrived as well, as everyone was used to XML at the time.
`{num 5, val 4}` looks fine to me, but we can do even better! We already know objects/maps are always in pairs, so we don't really need that comma either. Just do `{num 5 val 4}` and we save yet another unnecessary characters.
Of course, I didn't come up with this format myself, what I actually want JSON to be is EDN (https://github.com/edn-format/edn) which is a standalone format but also directly used in Clojure, so it already exists inside a programming language and works very well. There keys are strings though, so you example would end up being `{"num" 5 "val" 5 "person" var}`, where commas are optional.
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JSON vs. XML with Douglas Crockford
I just checked out the spec, and it gets pretty ugly in the Table section. A lot of the json examples are both shorter and IMO more precise. Stuff that’s not allowed with [table] is allowed with [[table]], and it’s confusing to understand what level of depth I’m at.
I’ll take edn over any of “em. https://github.com/edn-format/edn
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Taming the Time: how to install & develop with XTDB
As XT is written in Clojure and it natively supports Clojure’s data types, we were not satisfied with available JSON types and decided to give EDN a try - that way we would have way more supported types:
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Design patterns are a solution to the problem OOP itself creates
Compare the nightmare that is pickling with how simple it is to serialize pure data with edn in clojure. What ends up happening is people passing around JSONs or whatever and writing parsing/encoding code at each end, which makes things unnecessarily more complex, and dangerous, and error prone, and boring, etc...
- The YAML Document from Hell
What are some alternatives?
jsonlogic - Go Lang implementation of JsonLogic
json - JSON for Modern C++
json-logic-js - Build complex rules, serialize them as JSON, and execute them in JavaScript
EPOE-Forked - Github repository for EPOE-Forked
json-logic-rs - JSONLogic implementation in Rust, accessible via Python and JS
jq - Command-line JSON processor [Moved to: https://github.com/jqlang/jq]
jaspr - Modern web framework for building websites in Dart. Supports SPAs and SSR.
yamllint - A linter for YAML files.
secure-json-logic - Use logic-objects from uncertain sources and run them locally without breaking the own system
dhall-lang - Maintainable configuration files
jsedn - javascript implementation of edn
json - A tested JSON parser / serializer