下列範例示範實作System.IEquatable<T>且具有兩個屬性 File和Size的MyFileInfoSet類別部分實作。 如果兩個MyFileInfoSet物件的 File 和 Size 屬性相同,此方法Equals()會傳回True。 PowerShell複製 class MyFileInfoSet : System.IEquatable[Object] { [String]$File[Int64]$Size[bool] Equals([Object]$obj)...
正確使用大小寫的「PowerShell」等於小寫的「powershell」,這是使用 equals 比較運算子比較得出的結果。 PowerShell 複製 'PowerShell' -eq 'powershell' Output 複製 True 使用區分大小寫的相等比較運算子時,結果不是相等的。 PowerShell 複製 'PowerShell' -ceq 'powershell' Output 複製 False ...
function quicksort([ref]$L, $left, $right) { if($left -ge $right) { return } $i = $left $j = $right $pivot = $L.Value[$left] while($i -lt $j) { while(($i -lt $j) -and ($L.Value[$j] -ge $pivot)) { $j-- } if($i -lt $j) { $L.Value[$i] = $L.Val...
return $Value -eq $null -or [System.DBNull]::Value.Equals($Value) } # Example usage: $myVar = $null # This could be $null or a result from a database query if (IsNullOrDbNull -Value $myVar) { Write-Host "Variable is null or DB null" } else { Write-Host "Variable has a ...
Set-Variable -name intDriveType -value 3 -option constant #常量定义 常量:intDriveType 值:3 foreach ($strComputer in $aryComputers) #循环遍历数组对象 {"Hard drives on: " + $strComputer #获取wmi对象 分类:win32_logicaldisk 电脑名称:$strComputer 源自数组对象 电脑过滤条件:drivetype = 3 ,驱动器...
PowerShell 可以看做是弱类型语言。所谓弱类型语言可以是指不用区分数据类型,不用对数据类型进行转型,数据类型根据赋予它的值确定。 1.变量的命名规范: $ + 其他字符 2.常量的命名规范:Set-Variable 来申明常量,-name 参数用于申明常量名,-value 参数用于申明常量值
] [-ErrorAction <ActionPreference>] [-ErrorVariable <String>] [-OutVariable <String>] [-OutBuffer <Int32>] [-WhatIf] [-Confirm]若要创建新的 Windows PowerShell 驱动器,您必须提供三个参数: 驱动器的名称(可以使用任何有效的 Windows PowerShell 名称)...
false -InputObject <ServiceController[]> Specifies ServiceController objects that represent the services to stop. Enter a variable that contains the objects, or type a command or expression that gets the objects. Required? true Position? 0 Default value None Accept pipeline input? True (ByValue) ...
If a variable value contains single quotation marks, you need to identify (escape) the single quotation marks to expand the variable correctly. For example, instead of '$User', use '$($User -Replace "'","''")'. Don't enclose integers or system values in quotation marks (for example,...
For example, the following statement assigns the value PowerShell to the $MyShell variable: PowerShell Afrita $MyShell = "PowerShell" When you assign a value to a variable in PowerShell, the variable is created if it didn't already exist. For example, the first of the following two ...