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Original link: https://forum.crystal-lang.org/t/confusing-error-output-instance-variable-x-of-a-was-inferred-to-be-nil/5053
Following is code:
```crystal
class A
def initialize(x)
@x : …
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## reproduction steps
```scala
class C extends (Set[AnyRef] => Unit) { // error: class C needs to be abstract. Missing implementation for: def apply(v1: Set[_]): Unit // inherited from trait Funct…
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The same arguments apply to both `Tuple` and `NamedTuple`, but here only examples for the former are shown. The following code seems like it should work:
```crystal
def foo(x : T, y : U) forall T,…
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### What happened?
crashes when i hit play
### Loader
fabric
### Mod Version
1.20.1
### Minecraft Version
1.20
### Relevant log output
```Shell
---- Minecraft Crash Report ----
// You're m…
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The config system has historically been very brittle. We have had many config related issues over time:
* Old configs cause breakage because we didn't maintain backward compatibility with certain o…
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When i run some code on my local, i get following error message:
```
╰─ $ 1 cr run src/procodile.cr --error-trace
In src/procodile.cr:76:34
76 | ap = Procodile::AppDetermination.new(FileUti…
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Gitter discussion provided to save time and not misquote @oprypin .
@oprypin
> i see. well, maybe my main dissatisfaction comes from how rigid postinstall is. any tiniest problem and everything j…
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Avram builds arbitrarily long argument lists for setting database records - an argument for every field. Each of these fields is set optionally, and thus the argument type is always `Type | Avram::Not…
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`Process::Status` currently has no public constructor, so it's impossible to explicitly create an instance. Instances can only be acquired from `Process#wait`.
There is an undocumented internal const…
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## Summary
Similar issue to [the `items` one](https://github.com/themesberg/flowbite-svelte/issues/534).
There is 2 typings issues :
- one with `index` props from the `{#each ...}` svelte logi…