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  1. docker

    访问容器

    docker exec -it <CONTAINER ID> /bin/bash

    拷贝容器文件至本地

    docker cp <IMAGE>:<容器路径> <本地路径>

    拷贝本地文件至容器

    docker cp <本地文件> <IMAGE>:<容器路 …

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  4. 解决Cannot find module '../lib/completion'

    // package.json
{
    "scripts": {
        "build": "gulp build"
    }
}

    错误：

    Error: Cannot find module '../lib/completion'
    at Function.Module._resolveFilename (module.js:469:15)
    at Function.Module._load (module.js:417:25)
    at Module.require (module.js:497:17)
    at require (internal/module.js:20:19)
    at Object.<anonymous> (/staticDisk/repository/jenkins …
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  5. element-ui + element-theme + vue-cli + postcss-px2rem

    • element-ui: 1.4.2
    • vue-cli: 2.8.2
    // utils.j
exports.cssLoaders = function (options) {
    ...
    return {
        css: generateLoaders('postcss', {
            plugins() {
                return [require('postcss-px2rem')({ remUnit: 75 })]
            }
        }),
        ...
    }
}

    // vue-loader.conf.js
module.exports = {
    ...
    postcss: [require('postcss-px2rem')({ remUnit: 75 })],
    ...
}
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  7. 查看Swift代码执行时间

    func measure(title: String!, call: () -> Void) {
    let startTime = CACurrentMediaTime()
    call()
    let endTime = CACurrentMediaTime()
    if let title = title {
        print("\(title): ")
    }
    print("Time - \(endTime - startTime)")
 }

    func doSomeWork() {
  measure("Array") {
  var ar = [String]()
  for i in 0...10000 {
  ar.append("New elem \(i)")
  }
  }
  measure("Image") {
  let url = NSURL(string: "http://lorempixel.com/1920 …
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