CN-CODEGOD

解释:
在代码中可能遇见一种情况需要向外一层层的解剖一个object,但是我们只能从根据内部推出外部.
实例:
我们需要通过一个xml表构建一个psobject
此时我们要构建这个psobject,我们试从xml一层层地剖析
```
([pscustomobject]@{roadcoordinate=@{
> roadcoordinte1=@{x=1
> y=1
> z=1

CN-CODEGOD

Import-xml 


using namespace system.xml.linq
class script {
    [scriptblock]$scriptblock
    [string]$name
#1.add hidden path
hidden [string]$path = "$PSScriptRoot\xml\script.xml"

CN-CODEGOD

1.Dynamic ValidateSet values using classes
Class SoundNames : System.Management.Automation.IValidateSetValuesGenerator {
    [string[]] GetValidValues() {
        $SoundPaths = '/System/Library/Sounds/',
                      '/Library/Sounds',
                      '~/Library/Sounds'
        $SoundNames = ForEach ($SoundPath in $SoundPaths) {
            If (Test-Path $SoundPath) {
                (Get-ChildItem $SoundPath).BaseName
            }

CN-CODEGOD

# 获取系统环境变量 PATH 并将其拆分为数组
$pathArray = $env:PATH -split ';'

# 输出数组内容
$pathArray

CN-CODEGOD

[Parameter(
   Position = 0,
   ValueFromPipeline = true,
   ValueFromPipelineByPropertyName = true)]
[ValidateNotNullOrEmpty]
public string[] Name
{
   get { return this.processNames; }
   set { this.processNames = value; }
}

CN-CODEGOD

1.The ValidateSet attribute specifies a set of valid values for a parameter or variable and enables tab completion. PowerShell generates an error if a parameter or variable value doesn't match a value in the set. In the following example, the value of the Fruit parameter can only be Apple, Banana, or Pear.


 [ValidateSet('Apple', 'Banana', 'Pear')]


2.You can use a Class to dynamically generate the values for ValidateSet at runtime. In the following example, the valid values for the variable $Sound are generated via a Class named SoundNames that checks three filesystem paths for available sound files:
Class SoundNames : System.Management.Automation.IValidateSetValuesGenerator {
    [string[]] GetValidValues() {
        $SoundPaths = '/System/Library/Sounds/',

CN-CODEGOD

1.via bat:
const { exec, spawn } = require('node:child_process');

exec('my.bat', (err, stdout, stderr) => {
  if (err) {
    console.error(err);
    return;
  }
  console.log(stdout);
});

CN-CODEGOD

windowS常见encoding:有 cp936,UTF-8
确保你和来源字体编码相同
powershell一般使用的是utf-8,确保你来源和终端encoding相同即可

如果来源JavaScript 可以用
iconv-lite 模组进行encoding 转码
实例:
cp936:utf-8
const { exec } = require('node:child_process');
const path = require('node:path');

CN-CODEGOD

1.parameterset

nction Measure-Lines {
    [CmdletBinding(DefaultParameterSetName = 'Path')]
    param (
        [Parameter(Mandatory, ParameterSetName = 'Path', Position = 0)]
        [Parameter(Mandatory, ParameterSetName = 'PathAll', Position = 0)]
        [string[]]$Path,

        [Parameter(Mandatory, ParameterSetName = 'LiteralPathAll', ValueFromPipeline)]

CN-CODEGOD

#获取环境变量
$pspath=[System.Environment]::GetEnvironmentVariable('psModulepath','machine')
#添加环境变量
$pspath+=";$home\modules"
#设置环境变量
[System.Environment]::SetEnvironmentVariable('psmodulepath',$pspath,'machine')
#系统环境变量和用户环境变量的区别

系统环境变量： 'machine'
当前用户环境变量：'User'