如何使正则表达式宏工作?
How to make regex macros work?
我关注了this tutorial。但是,尝试编译示例:
#![feature(plugin)]
#[plugin] #[no_link]
extern crate regex_macros;
extern crate regex;
fn main() {
let re = regex!(r"^\d{4}-\d{2}-\d{2}$");
assert_eq!(re.is_match("2014-01-01"), true);
}
失败并出现以下错误:
src/main.rs:3:1: 3:27 error: can't find crate for `regex_macros`
src/main.rs:3 extern crate regex_macros;
^~~~~~~~~~~~~~~~~~~~~~~~~~
error: aborting due to previous error
Could not compile `upm`.
我加了
[dependencies]
regex = "0.1.8"
给我的 Cargo.toml
.
该文档似乎已被弃用。
我之前更新过 Rust:
$ rustc --version
rustc 1.0.0-nightly (74b874071 2015-02-08 00:24:03 +0000)
我现在必须遵循哪些步骤?
宏分发为 their own crate。您需要将它们添加为依赖项,在 Cargo.toml
:
上的 regex
板条箱旁边
[dependencies]
regex = "0.1.8"
regex_macros = "0.1.8"
也许您可以向适当的项目提供拉取请求以加强文档!
我关注了this tutorial。但是,尝试编译示例:
#![feature(plugin)]
#[plugin] #[no_link]
extern crate regex_macros;
extern crate regex;
fn main() {
let re = regex!(r"^\d{4}-\d{2}-\d{2}$");
assert_eq!(re.is_match("2014-01-01"), true);
}
失败并出现以下错误:
src/main.rs:3:1: 3:27 error: can't find crate for `regex_macros`
src/main.rs:3 extern crate regex_macros;
^~~~~~~~~~~~~~~~~~~~~~~~~~
error: aborting due to previous error
Could not compile `upm`.
我加了
[dependencies]
regex = "0.1.8"
给我的 Cargo.toml
.
该文档似乎已被弃用。
我之前更新过 Rust:
$ rustc --version
rustc 1.0.0-nightly (74b874071 2015-02-08 00:24:03 +0000)
我现在必须遵循哪些步骤?
宏分发为 their own crate。您需要将它们添加为依赖项,在 Cargo.toml
:
regex
板条箱旁边
[dependencies]
regex = "0.1.8"
regex_macros = "0.1.8"
也许您可以向适当的项目提供拉取请求以加强文档!