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I was unaware of the usefulness of JSON Schema until recently I was writing some Vega Lite json specs in VS Code. I don't have any relevant json extensions, bu

by RobinL 9y ago

I was unaware of the usefulness of JSON Schema until recently I was writing some Vega Lite json specs in VS Code. I don't have any relevant json extensions, but VS Code started auto-suggesting values for options (e.g. a drop down for whether the chart type is a 'bar', 'line', etc.) and pointing our mistakes like 'the size should be an integer not a percent'. This was the lightbulb moment for me - as if by magic, my code editor was double checking my json document was valid and helping me write it. Amazing, and super useful. It took me a while to work out how it was doing it, but all vega lite examples start with the magic: "$schema": "https://vega.github.io/schema/vega-lite/v2.json" https://vega.github.io/schema/vega-lite/v2.json".

malkia 9y ago
I'm trying to find time, among many blockers that I have to take a look at Vega Lite - as another alternative/addition to kibana or grafana, also last night found DejaVu - https://github.com/appbaseio/dejavu https://github.com/appbaseio/dejavu - and yes, JSON schema comes off often enough, since we moved a lot of our configuration there, and hated or not XML had the XSD sanity...
davidp 9y ago
This light bulb is exactly why many people prefer statically-typed programming languages, especially above a certain codebase size/complexity and team size. Make my tools do the grunt-work for me, thanks, so I can focus on the actual problem domain.
- vilmosi 9y ago
  But this is about application or user specific config. In my experience, those tend to be either json, yml or plain terminal args regardless of the fact that the language is typed or not. Am I missing something?
- HumanDrivenDev 9y ago
  > This light bulb is exactly why many people prefer statically-typed programming languages, especially above a certain codebase size/complexity and team size. I agree, with the caveat that sometimes you need an escape valve. Basically I want static typing 99% of the time and I don't want guff from the compiler (or fanboys) in that 1%.
  - runeks 9y ago
    That’s what (unchecked) exceptions are for. They’re supported by all general purpose programming languages because we — as developers — are smarter than the compiler.
    - nardi 9y ago
      1. GP is talking about type safety in general, not just exceptions. 2. Not “all general purpose programming languages” support exceptions. To name a few that don’t: C, Rust, Go.
      - bpp 9y ago
        Go has the empty interface, if you really need it.
        majewsky 9y ago
        The empty interface is not an unchecked exception, but panic() is. https://golang.org/pkg/builtin/#panic https://golang.org/pkg/builtin/#panic
        nardi 9y ago
        I don’t actually know Go, but can panic() be caught? If not, it’s not an exception.
        ovao 9y ago
        With recover(), yes.
  - manigandham 9y ago
    C# and Typescript are great at this, and a great combo together.
majewsky 9y ago
Working link: https://vega.github.io/schema/vega-lite/v2.json https://vega.github.io/schema/vega-lite/v2.json
bundle 9y ago
https://jsonschema.net https://jsonschema.net may help you get started without the pain of writing boilerplate code. Unfortunately it doesn't perform validation, nor implement all validation annotations - but it definitely helped me get started.

by RobinL 9y ago

malkia 9y ago

I'm trying to find time, among many blockers that I have to take a look at Vega Lite - as another alternative/addition to kibana or grafana, also last night found DejaVu - https://github.com/appbaseio/dejavu https://github.com/appbaseio/dejavu - and yes, JSON schema comes off often enough, since we moved a lot of our configuration there, and hated or not XML had the XSD sanity...

davidp 9y ago

This light bulb is exactly why many people prefer statically-typed programming languages, especially above a certain codebase size/complexity and team size. Make my tools do the grunt-work for me, thanks, so I can focus on the actual problem domain.

vilmosi 9y ago
But this is about application or user specific config. In my experience, those tend to be either json, yml or plain terminal args regardless of the fact that the language is typed or not. Am I missing something?
HumanDrivenDev 9y ago
> This light bulb is exactly why many people prefer statically-typed programming languages, especially above a certain codebase size/complexity and team size. I agree, with the caveat that sometimes you need an escape valve. Basically I want static typing 99% of the time and I don't want guff from the compiler (or fanboys) in that 1%.
- runeks 9y ago
  That’s what (unchecked) exceptions are for. They’re supported by all general purpose programming languages because we — as developers — are smarter than the compiler.
  - nardi 9y ago
    1. GP is talking about type safety in general, not just exceptions. 2. Not “all general purpose programming languages” support exceptions. To name a few that don’t: C, Rust, Go.
    - bpp 9y ago
      Go has the empty interface, if you really need it.
      - majewsky 9y ago
        The empty interface is not an unchecked exception, but panic() is. https://golang.org/pkg/builtin/#panic https://golang.org/pkg/builtin/#panic
        nardi 9y ago
        I don’t actually know Go, but can panic() be caught? If not, it’s not an exception.
        ovao 9y ago
        With recover(), yes.
- manigandham 9y ago
  C# and Typescript are great at this, and a great combo together.

majewsky 9y ago

Working link: https://vega.github.io/schema/vega-lite/v2.json https://vega.github.io/schema/vega-lite/v2.json

bundle 9y ago

https://jsonschema.net https://jsonschema.net may help you get started without the pain of writing boilerplate code. Unfortunately it doesn't perform validation, nor implement all validation annotations - but it definitely helped me get started.