小编Mar*_*rov的帖子

我的工作我的第一锈箱，我想使我的API有点允许双方友好用户更foo(vec!["bar", "baz"])和foo(vec![String::from("foo"), String::from("baz")])。

到目前为止，我已经设法接受了两者String，&str但我正在努力为Vec<T>.

fn foo<S: Into<String>>(string: S) -> String {
    string.into()
}

fn foo_many<S: Into<String>>(strings: Vec<S>) -> Vec<String> {
    strings.iter().map(|s| s.into()).collect()
}

fn main() {
    println!("{}", foo(String::from("bar")));
    println!("{}", foo("baz"));

    for string in foo_many(vec!["foo", "bar"]) {
        println!("{}", string);
    }
}

我得到的编译器错误是：

error[E0277]: the trait bound `std::string::String: std::convert::From<&S>` is not satisfied
 --> src/main.rs:6:30
  |
6 |     strings.iter().map(|s| s.into()).collect()
  |                              ^^^^ the trait `std::convert::From<&S>` is not implemented for `std::string::String`
  |
  = help: …

我的 Angular 10.2.1 应用程序使用自定义 webpack 构建器在 .scss 文件中提供 PostCSS 支持，在 SPA 模式下工作得非常好。

角度.json

        "build": {\n          "builder": "@angular-builders/custom-webpack:browser",\n          "options": {\n            "customWebpackConfig": {\n              "path": "./webpack.config.js"\n            },\n

webpack.config.js

let plugins = [\n  require(\'postcss-import\'),\n  require(\'tailwindcss\'),\n  require(\'autoprefixer\'),\n]\n\nmodule.exports = {\n  module: {\n    rules: [\n      {\n        test: /\\.scss$/,\n        loader: \'postcss-loader\',\n        options: {\n          ident: \'postcss\',\n          syntax: \'postcss-scss\',\n          plugins: () => plugins\n        }\n      }\n    ]\n  }\n};\n

我决定按照官方文档添加 SSR 支持ng add @nguniversal/express-engine，但是当我尝试提供 SSR 版本时，出现错误：

ERROR in Module build failed (from ./node_modules/@angular-devkit/build-angular/node_modules/sass-loader/dist/cjs.js):\nSassError: expected …