RustConf 2023 - How Powerful is Const

Unlock the power of const in Rust with this in-depth conference talk, covering its uses in type parameters, assertions, generics, unions, and more.

Key takeaways

Const values are immutable.
Const can be used as a parameter to a type.
Contrasting const and static values.
Using const to represent U size 64.
Const generics.
Const assertions.
Using const with slices.
Converting enums to integers.
Thinking about conditional typing with const.
Creating a wrapper struct for bytes.
Using const with strings, including UTF-16 and UTF-8.
Providing data by taking the string’s pointer.
Using const with unions.
Impulse crate.
Contrepr crate.
Transcoding strings from UTF-8 to UTF-16.
Creating a loop to handle concatenation.
Using const with loops.
Const can also be used as a compile-time evaluation.
Const can be used to perform lossless conversion.
Const can be used in unions.
Const can be used to make C happy.
Const can be used to work with tuples.
Const can be used to create a generic type.
Const can be used to make a type implement a given set of traits.
Const can be used to conditionally evaluate a type.
Const can be used to concatenate null bytes.
Using const with size specifically.
Using const with unsigned integers.
Const can be used with enum variants.
Using const with associative constants on types.
Using const with traits.
Const can be used with compile-time assertions.
Const can be used to check if an assertion passes.
Const can be used with panic.
Const can be used to make a type alias.
Const can be used to wrap logic.
Using const with proxies.
Const can be used with integers.
Using const with U size 64.
Const can be used to create a generic type.
Const can be used to perform conditional typing.
Const can be used to make C happy.
Const can be used to work with arrays.
Const can be used to concatenate slices.
Const can be used to create a loop to handle concatenation.
Const can be used to make C happy.
Const can be used to work with strings.
Const can be used with UTF-16 and UTF-8.
Providing data by taking the string’s pointer.
Using const with unions and enums.
Impulse crate.
Contrepr crate.
Better align to handle array representation.
Making C happy.

RustConf 2023 - How Powerful is Const

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