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Originally expected to remove this from v3.x due to the introduction of XHP attribute splat - announced with https://github.com/hhvm/xhp-lib/releases/tag/v2.6.0
This has some behavior behavior, e.g…
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- `x:composable_element` (aka `x:node` in #247) is extended by `x:primitive` and `x:element`
- both of these implement `XHPRoot`
- AIUI the XHP core framework needs to be aware of all subclasses, so…
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I know that Hack's generics are based on type erasure, so the type parameters are removed in the runtime version of the program, but I'm still wondering if there might be a way to accomplish the follo…
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The value for the `step` attribute on an input can be:
> [...] the string any or a positive floating point number ([source](https://developer.mozilla.org/en-US/docs/Web/HTML/Element/input#attr-step))…
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See the following console output. Any ideas?
hhvm docs appear to say the latest version of composer will auto-detect whether to run with php or hhvm, could that be broken?
```
abirchall-fb[abdev]…
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I'm getting an error on every startup. nvim 0.5 on WSL. Have a slightly locked down network at work, so it may be network related, but I need to know which file it's having issues with to be able to…
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## My perspective
- we're unlikely to add first-class typechecker support, as it has its’ own type system that is inconsistent with the rest of hack.
- we're unlikely to remove it as it does provi…
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With attribute validation turned on, the Hack array types fail to match `vec` with `HH\vec` (and similar for `dict`/`keyset`)
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Please complete the information below:
# Where is the problem?
http://staging.docs.hhvm.com/hack/source-code-fundamentals/names @ 1st paragraph
# What is the problem?
This page states that n…