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"...written in Java, Python or JavaScript. That means the code is not cross-platform..." [1] wat. I need an explanation how these implementations are not "cros

"...written in Java, Python or JavaScript. That means the code is not cross-platform..." [1] wat. I need an explanation how these implementations are not "cross-platform" yet his Go implementation is. 1 - from the author's blog post at https://divan.github.io/posts/animatedqr/ https://divan.github.io/posts/animatedqr/

shittyadmin 8y ago
I can only suggest his definition of cross platform may actually mean "works on iOS in compliance with Apple policies". While those all will work well on major PC OSes and for the most part on Android devices, Apple's policies are quite strict about running compilers and interpreters on device last I checked. Meaning you need compiled code in some way, shape or form.
- JeremyBanks 8y ago
  Apple removed the blank ban on interpreters more than five years ago. The restriction now only applies to interpreters running user-provided/dynamic code. If you're bundling it with the application, as you would here, it's allowed -- and many popular games rely on this.
  - jayd16 8y ago
    This isn't true at all. You still can't run Unity outside of AOT mode, for example.
    - noobiemcfoob 8y ago
      Somehow Kivy applications are allowed permitting a bundled python interpreter... I've never looked into the rules but know of examples in the app store.
    - pjmlp 8y ago
      But you can surely run AOT compiled Java on iOS. In fact, there at least 3 Java AOT compilers that support it.
divan 8y ago
> I need an explanation how these implementations are not "cross-platform" yet his Go implementation is. OP here. I agree the wording is a bit unfortunate here, as all languages mentioned were designed to be cross-platform. I was referring rather to the practical complexity of using the code in different environments - native desktop, mobile (Android/iOS) and Web (JS/WASM). With Go you can take normal Go code and build it for iOS/Android/Web in a few seconds with a minimal effort. I personally don't know if this even possible for Java/Python/JS, let alone with such an ease.

shittyadmin 8y ago

I can only suggest his definition of cross platform may actually mean "works on iOS in compliance with Apple policies". While those all will work well on major PC OSes and for the most part on Android devices, Apple's policies are quite strict about running compilers and interpreters on device last I checked. Meaning you need compiled code in some way, shape or form.

JeremyBanks 8y ago
Apple removed the blank ban on interpreters more than five years ago. The restriction now only applies to interpreters running user-provided/dynamic code. If you're bundling it with the application, as you would here, it's allowed -- and many popular games rely on this.
- jayd16 8y ago
  This isn't true at all. You still can't run Unity outside of AOT mode, for example.
  - noobiemcfoob 8y ago
    Somehow Kivy applications are allowed permitting a bundled python interpreter... I've never looked into the rules but know of examples in the app store.
  - pjmlp 8y ago
    But you can surely run AOT compiled Java on iOS. In fact, there at least 3 Java AOT compilers that support it.

divan 8y ago

> I need an explanation how these implementations are not "cross-platform" yet his Go implementation is. OP here. I agree the wording is a bit unfortunate here, as all languages mentioned were designed to be cross-platform. I was referring rather to the practical complexity of using the code in different environments - native desktop, mobile (Android/iOS) and Web (JS/WASM). With Go you can take normal Go code and build it for iOS/Android/Web in a few seconds with a minimal effort. I personally don't know if this even possible for Java/Python/JS, let alone with such an ease.