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...
$array = @('blue','red','purple','pink') $array2 = @('blue','red','blue','yellow','blue','blue','a','d') $array | ForEach-Object { if ($array2 -match $_) { $matchingCount++ } } #Write-Host "Number of matching values: $matchingCount" If ($matchingCount -eq "0")...
To create a strongly typed array, that is, an array that can contain only values of a particular type, cast the variable as an array type, such as string[], long[], or int32[]. To cast an array, precede the variable name with an array type enclosed in brackets. For example:Power...
XNodeArray.Count Property Reference Feedback Definition Namespace: Microsoft.Azure.PowerShell.Cmdlets.DataBox.Runtime.Json Assembly: Az.DataBox.private.dll C# publicoverrideintCount {get; } Property Value Int32 Implements Count Applies to ПродуктВерсії ...
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 timeout to invoke-command Assigning Multiple Values to One Variable Assigning permiss...
Right-hand values are always treated as singleton instances, even when they're collections. The comparison operators can't effectively compare collections to collections. If there are no matches in the collection, comparison operators return an empty array. For example: PowerShell Copy $a =...
One of my favorite tricks is to create an array of numbers by using the Get-Random cmdlet. To do this, I use Count to specify the number of values to select, and I use a range operator to create an array of numbers from which to choose. I then write the random values to a variab...
Incidentally, you can determine the number of items in an array simply by echoing back the value of theCountproperty, like so: $a.Count Oh, one more thing: what if you to get rid ofallthe items in the array? Here’s one thought; call theClearmethod: ...
You bet we do: because this is an array, we can use theCountproperty to determine the number of items in the array. And, if you look closely at the code, you’ll see that this is exactly what we do with Where-Object: {$_.GetFiles().Count -eq 0} ...
This values will always be evaluated, if possible. Keep in mind that the variables entered as a watch may not be available in all scopes. BREAKPOINTS Besides setting line breakpoints, the PowerShell debugger allows you to set function breakpoints, conditional breakpoints, and tracepoints. ...