yarn上的MATCH
时间: 2024-03-19 12:38:24 浏览: 15
在Yarn上,MATCH是一个用于模式匹配的函数它可以用于查找字符串中是否存在指定的模式,并返回匹配的结果。MATCH函数的语法如下:
MATCH(pattern, string, [flags])
其中,pattern是要匹配的模式,可以是一个字符串或正则表达式;string是要进行匹配的字符串;flags是可选参数,用于指定匹配的标志。
MATCH函数返回一个数组,包含所有匹配到的结果。如果没有找到匹配的结果,则返回null。
例如,假设我们有一个字符串"Hello, world!",我们可以使用MATCH函数来查找其中是否包含"world"这个单词:
```
MATCH("world", "Hello, world!") // 返回 [ "world" ]
```
如果我们想要不区分大小写地进行匹配,可以使用标志"i":
```
MATCH("WORLD", "Hello, world!", "i") // 返回 [ "world" ]
```
如果没有找到匹配的结果,MATCH函数会返回null:
```
MATCH("foo", "Hello, world!") // 返回 null
```
相关问题
run "yarn install" to update the lockfile
To update the lockfile using Yarn on Windows, follow these steps:
1. Open the command prompt or PowerShell and navigate to the directory where your project is located.
2. Run the following command to update the lockfile:
```
yarn install
```
This command will update the lockfile (`yarn.lock`) based on the dependencies specified in your `package.json` file.
3. Yarn will fetch the latest versions of the dependencies and update the lockfile accordingly. It will also ensure that the installed dependencies match the versions specified in the lockfile.
4. Once the command completes successfully, your lockfile will be updated, and you can continue working with your project.
Remember to run `yarn install` whenever you add, remove, or modify dependencies in your project to keep the lockfile up to date and ensure consistent installations across different environments.
error Command failed. Exit code: 128 Command: git Arguments: fetch --tags Directory: C:\Users\Administrator\AppData\Local\Yarn\Cache\v6\.tmp\c8a1082f4d0cf2d24e10ae2d0b9c32e3 Output: error: RPC failed; curl 28 Recv failure: Connection was reset fatal: expected flush after ref listing info Visit https://yarnpkg.com/en/docs/cli/add for documentation about this command. Error: Couldn't find match for "91431fa" in "refs/heads/main" for "https://github.com/oscario2/wp5-cra-polyfill.git". at MessageError.ExtendableBuiltin (C:\Users\Administrator\AppData\Roaming\npm\node_modules\yarn\lib\cli.js:721:66) at new MessageError (C:\Users\Administrator\AppData\Roaming\npm\node_modules\yarn\lib\cli.js:750:123) at Git.<anonymous> (C:\Users\Administrator\AppData\Roaming\npm\node_modules\yarn\lib\cli.js:51246:15) at Generator.next (<anonymous>) at step (C:\Users\Administrator\AppData\Roaming\npm\node_modules\yarn\lib\cli.js:310:30) at C:\Users\Administrator\AppData\Roaming\npm\node_modules\yarn\lib\cli.js:321:13
这个错误看起来是一个 Git 操作失败了。可能是由于网络连接问题,导致 Git 无法从远程仓库获取最新的代码。你可以尝试运行以下命令来解决这个问题:
```
git config --global http.postBuffer 524288000
```
这会将 Git 的缓冲区大小增加到 500 MB,以避免出现类似上述错误的问题。如果这个命令不起作用,你可以尝试删除 Yarn 缓存并重新运行 Yarn 命令:
```
yarn cache clean
yarn install
```
这将清除 Yarn 的本地缓存并重新安装项目的依赖项。希望这些方法能够帮助你解决问题。