[英]How do you enable a Rust "crate feature"?
I'm trying to userand::SmallRng
.我正在尝试使用rand::SmallRng
。 The documentation says文件说
This PRNG is feature-gated : to use, you must enable the crate feature
small_rng
.此 PRNG 是功能门控:要使用,您必须启用板条箱功能small_rng
。
I've been searching and can't figure out how to enable "crate features".我一直在搜索,无法弄清楚如何启用“板条箱功能”。 The phrase isn't even used anywhere in the Rust docs. Rust 文档中的任何地方都没有使用该短语。 This is the best I could come up with:这是我能想到的最好的:
[features]
default = ["small_rng"]
But I get:但我得到:
Feature
default
includessmall_rng
which is neither a dependency nor another feature功能default
包括small_rng
,它既不是依赖项也不是其他功能
Are the docs wrong, or is there something I'm missing?文档是错误的,还是我遗漏了什么?
Specify the dependencies in Cargo.toml like so:在 Cargo.toml 中指定依赖项,如下所示:
[dependencies]
rand = { version = "0.7.2", features = ["small_rng"] }
Alternatively:或者:
[dependencies.rand]
version = "0.7.2"
features = ["small_rng"]
Both work.两者都有效。
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