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This change is [](https://reviewable.io/reviews/starkware-libs/cairo/4516)

liorgold2

EthAddress type in l1_handler

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validate that the first argument of an l1_handler is of this type

ArielElp

Added panic! macro

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This change is [](https://reviewable.io/reviews/starkware-libs/cairo/4341)

yuvalsw

the `at` method on `Array` (and Span) returns `@T` while on `ByteArray` it returns `Option<T>`.

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I think that keeping a consistent interface between the three is important for a good developer experience. Proposal: - First, introduce a `get` method on `ByteArray` that returns `Option` (could...

enitrat

This change is [](https://reviewable.io/reviews/starkware-libs/cairo/4309)

yuvalsw

Resolves #4231 I added a function is_null function is the NullableTrait. When I was solving the Node Guardian quest : racing riverboats, I thought it could be useful to have...

chachaleo

This is a minimal feature request/suggestion to lessen the boilerplate of dealing with optionals. Consider this convoluted example ``` fn foo() -> Option { call_with_optional_result()?.into() } ``` instead of requiring...

sveamarcus

# Feature Request **Describe the Feature Request** - Implement the `Into` trait to convert a `Storage{Base}Address` into a `felt252` - Implement the `Into` trait to convert a `Storage{Base}Address` into a...

enitrat

bug(docs): reserved keywords are not reserved

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# Bug Report **Cairo version:** **Current behavior:** According to the [documentation](https://cairo-lang.org/docs/v1.0/language_constructs/keywords.html), the following keywords are reserved for future usages: ``` as assert do dyn extern let macro mod move ref...

enitrat

feat: Storage{Base}Address impls

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- Implements the `Into` trait to convert a `Storage{Base}Address` into a `felt252` - Implements the `Into` trait to convert a `Storage{Base}Address` into a `u256` - Implements `PartialEq` trait to allow...

enitrat