In PowerShell, determining if an array is empty is a fundamental task often encountered in scripting. An "empty" array here refers to one that
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...
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。 如果陣列是 $null,則計數是 0。PowerShell 複製 if ( $array.Count -gt 0 ) { "Array isn't empty" } ...
When no data type is specified, PowerShell creates each array as an object array (System.Object[]). To determine the data type of an array, use the GetType() method. For example:PowerShell Copy $A.GetType() To create a strongly typed array, that is, an array that can contain only...
array and array list with custom object Array Contains String not comparing. Array Counts Array Dropdown set to a variable Array to string and spaces Array to string using newlines possible? Asset Inventory - Assistance with Powershell Script ASSIGN AN HTML BLOCK TO A VARIABLE Assigning a timeou...
例如,以下示例中的foreach循环显示$letterArray数组中的值。 PowerShell $letterArray='a','b','c','d'foreach($letterin$letterArray) {Write-Host$letter} 在此示例中,$letterArray包含字符串值a、b、c和d。 第一次运行foreach语句时,它将$letter变量设置为等于$letterArray中的第一项 (a)。 然后,它...
PowerShell Bonus: Getting an Array of Day/Month Names To tell you the truth this has nothing to do with the Get-Date cmdlet, but we decided to tack this on to this week’s tip because we found in interesting. The .NET Framework class System.Globalization.DateTimeFormatInfo is designed to...
Of course, we still have one minor problem: the items in our array aren’t in alphabetical order. Sorting an array in VBScript is an … interesting … experience, to say the least. Here’s how you can sort an array in Windows PowerShell:...
Return Array.Empty instead of collection [] (#25137) (Thanks @ArmaanMcleod!) Tools Check GH token availability for Get-Changelog (#25133) Tests Add XUnit test for HandleDoubleAndSingleQuote in CompletionHelpers class (#25181) (Thanks @ArmaanMcleod!) Build and Packaging Improvements Switch to...
Return Array.Empty instead of collection [] (#25137) (Thanks @ArmaanMcleod!) Tools Check GH token availability for Get-Changelog (#25133) Tests Add XUnit test for HandleDoubleAndSingleQuote in CompletionHelpers class (#25181) (Thanks @ArmaanMcleod!) Build and Packaging Improvements Switch to...