arrayvec • 0.4.12A vector with fixed capacity, backed by an array (it can be stored on the stack too). Implements fixed capacity ArrayVec and ArrayString.
bitflags • 2.6.0A macro to generate structures which behave like bitflags.
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cfg-if • 1.0.0A macro to ergonomically define an item depending on a large number of #[cfg]
parameters. Structured like an if-else chain, the first matching branch is the
item that gets emitted.
parking_lot • 0.12.3More compact and efficient implementations of the standard synchronization primitives.
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proc-macro2 • 1.0.89A substitute implementation of the compiler's `proc_macro` API to decouple token-based libraries from the procedural macro use case.
scopeguard • 1.2.0A RAII scope guard that will run a given closure when it goes out of scope,
even if the code between panics (assuming unwinding panic).
Defines the macros `defer!`, `defer_on_unwind!`, `defer_on_success!` as
shorthands for guards with one of the implemented strategies.
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smallvec • 1.13.2'Small vector' optimization: store up to a small number of items on the stack