PowerShell 複製 if ( $null -eq $array ) { 'Array actually is $null' } $null陣列與空陣列不同。 如果您知道您有陣列,請檢查其中的物件計數。 如果陣列為 $null,則計數為 0。PowerShell 複製 if ( $array.count -gt 0 ) { "Array isn't empty" } ...
PS> $empty = $null PS> $empty[0] Error: Cannot index into a null array. 因此,在尝试访问数组中的元素之前,请确保数组不是 $null。Count数组和其他集合具有计数属性,可告知数组中有多少项。PowerShell 复制 PS> $data.count 4 PowerShell 3.0 向大多数对象添加了计数属性。 你可以使用单个对象,它应该...
In PowerShell, arrays have three properties that indicate the number of items contained in the array.Count - This property is the most commonly used property to determine the number of items in any collection, not just an array. It's an [Int32] type value. In Windows PowerShell 5.1 (...
while (items != null && items.Count == 1) { // Increment the line number each time a line is // processed. lineNumber++; String message = String.Format("Testing line {0} : {1}", lineNumber, items[0]); WriteDebug(message); result = SelectString(items[0]); if (result !...
Incidentally, you can determine the number of items in an array simply by echoing back the value of theCountproperty, like so: $a.Count Oh, one more thing: what if you to get rid ofallthe items in the array? Here’s one thought; call theClearmethod: ...
Removing Items From Arrays The String’s the Thing Three Things You Might Not Know About Windows PowerShell Functions Using Windows PowerShell “Here-Strings” Using the Range Operator in Wildcard Queries What Is (and What Isn’t) in Our Array? Windows PowerShell Tip: Adding a Simple Menu ...
- --- --- --- True True Object[] System.Array PS>$list.Count20PS>$list= @(Get-Service|Where-ObjectStatus-EQStarting ) PS>$list.GetType() IsPublic IsSerial Name BaseType --- --- --- --- True True Object[] System.Array PS>$list.Count0 Hash table literal syntax@{} Similar to...
To increase the number of items listed, increase the value of $FormatEnumerationLimit to 1000. Use Get-Service and Group-Object to display the services. PowerShell Copy $FormatEnumerationLimit = 1000 Get-Service | Group-Object -Property Status Output Copy Count Name Group --- --- ...
[int] $count = 0; [string] $basic = "Basic"; [string] $basicTest = "Basic + Test Plans"; 接下来,使用此脚本查询所有授权,以识别不活动用户: # Send the REST API request and initialize the members array list. $response = Invoke-RestMethod -Uri $request_GetEntitlements -headers $headers ...
A set of PowerShell functions you might use to enhance your own functions and scripts or to facilitate working in the console. Most should work in both Windows PowerShell and PowerShell 7, even cross-platform. Any operating system limitations should be h