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Cargo.toml
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Cargo.toml
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[package]
name = "once_cell"
version = "1.14.0"
authors = ["Aleksey Kladov <aleksey.kladov@gmail.com>"]
license = "MIT OR Apache-2.0"
edition = "2018"
description = "Single assignment cells and lazy values."
readme = "README.md"
documentation = "https://docs.rs/once_cell"
repository = "https://github.com/matklad/once_cell"
keywords = ["lazy", "static"]
categories = ["rust-patterns", "memory-management"]
exclude = ["*.png", "*.svg", "/Cargo.lock.msrv", "rustfmt.toml"]
[workspace]
members = ["xtask"]
[dependencies]
# Uses parking_lot to implement once_cell::sync::OnceCell.
# This makes no speed difference, but makes each OnceCell<T>
# up to 16 bytes smaller, depending on the size of the T.
parking_lot_core = { version = "0.9.3", optional = true, default_features = false }
# To be used in order to enable the race feature on targets
# that do not have atomics
# *Warning:* This can be unsound. Please read the README of
# [atomic-polyfill](https://github.com/embassy-rs/atomic-polyfill)
# and make sure you understand all the implications
atomic-polyfill = { version = "1", optional = true }
# Uses `critical-section` to implement `once_cell::sync::OnceCell`.
critical-section = { version = "1.1", optional = true }
[dev-dependencies]
lazy_static = "1.0.0"
crossbeam-utils = "0.8.7"
regex = "1.2.0"
critical-section = { version = "1.1", features = ["std"] }
[features]
default = ["std"]
# Enables `once_cell::sync` module.
std = ["alloc", "sync"]
# Enables `once_cell::race::OnceBox` type.
alloc = ["race"]
# Enables `once_cell::race` module.
race = []
# Enables semver-exempt APIs of this crate.
# At the moment, this feature is unused.
unstable = []
sync = []
parking_lot = ["parking_lot_core"]
critical-section = ["dep:critical-section", "sync"]
[[example]]
name = "bench"
required-features = ["std"]
[[example]]
name = "bench_acquire"
required-features = ["std"]
[[example]]
name = "bench_vs_lazy_static"
required-features = ["std"]
[[example]]
name = "lazy_static"
required-features = ["std"]
[[example]]
name = "reentrant_init_deadlocks"
required-features = ["std"]
[[example]]
name = "regex"
required-features = ["std"]
[[example]]
name = "test_synchronization"
required-features = ["std"]
[package.metadata.docs.rs]
all-features = true