hashtable是一个类似于数组的数据结构,除了你使用键来存储一个值(或者对象),它是一个基本的键/值对存储.首先,我们来创建一个空的hashtable $ageList= @{} 注意这里用的是花括号,而上面定义数组用的是小括号. 然后我们使得键来添加一些值: $key='Kevin'$value= 36$ageList.add($key,$value)$ageList.add...
Hashtable 和字典属性 哈希表和有序字典共享多个属性。$hash请考虑前面示例中定义的变量和$dictionary变量。 PowerShell $hash|Get-Member-MemberTypeProperties, ParameterizedProperty Output TypeName: System.Collections.Hashtable Name MemberType Definition --- --- --- Item ParameterizedProperty System.Object Item...
Import-CSV$Path|Group-Object-AsHashtable-Propertyemail 这会将每一行都添加到哈希表中,并使用指定的属性作为键来访问它。 复制哈希表 需要注意的一个重要事项是哈希表是对象。 每个变量只是对对象的引用。 这意味着,生成哈希表的有效副本需要完成更多的工作。
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The value of theExpressioncan be a script block instead of a hashtable. For more information, see theNotessection. Name/Label- Specifies the name of the property being created. You can useNameor its alias,Label, interchangeably. Expression- A string or script block used to calculate the va...
Set-Location"SQLSERVER:\SQL\MyComputer\MainInstance"PS SQLSERVER:\SQL\MyComputer\MainInstance>Invoke-Sqlcmd-Query"SELECT SERVERPROPERTY('MachineName') AS ComputerName"-ServerInstance(Get-Item.) ComputerName --- MyComputer 此命令會使用 Set-Location 來巡覽至 SQL Database Engine 實例的 SQL ServerWin...
$Date= (Get-Date).AddDays(-2)Get-WinEvent-FilterHashtable@{ LogName='Application'; StartTime=$Date; Id='1003'} Get-Datecmdlet 使用AddDays方法获取当前日期前两天的日期。 日期对象存储在$Date变量中。 Get-WinEventcmdlet 获取日志信息。FilterHashtable参数用于筛选输出。LogName键将值指定为应用程序日志...
## Compare-Property.ps1 ## ## From Windows PowerShell Cookbook (O’Reilly) ## by Lee Holmes (http://www.leeholmes.com/guide) ## ## Compare the property you provide against the input supplied to the script. ## This provides the functionality of simple Where-Object comparisons without ...
Add tooltips for hashtable key completions (#17864) (Thanks @MartinGC94!) Fix type inference of parameters in classic functions (#25172) (Thanks @MartinGC94!) Improve assignment type inference (#21143) (Thanks @MartinGC94!) Fix TypeName.GetReflectionType() to work when the TypeName instance...
By default,Select-Objectuses theScriptBlockstring as the name of the property. Using aHashtable, you can label the output of yourScriptBlockas a custom property added to each object. You can add multiple calculated properties to each object passed toSelect-Object. ...