# 定义要检查的字符串$myString="Hello123World"# 使用正则表达式匹配数字$containsNumber=$myString-match"\d"# 输出结果if($containsNumber){Write-Host"字符串包含数字"}else{Write-Host"字符串不包含数字"} 解释: 首先,我们定义了一个要检查的字符串$myString,这里假设
-contains運算子會檢查集合中是否包含您的值。 一旦找到匹配項目,就會傳回$true。 PowerShell $array=1..6if($array-contains3) {# do something} 這是查看集合是否包含您值的慣用方式。 每次使用Where-Object(或-eq)遍歷整個清單,速度會明顯變慢。
在另一篇名为使用正则表达式的多种方式的文章中,我详细介绍了 Select-String、-match 和$matches 变量。$null 或空测试$null 或空数组可能比较棘手。 下面是一些常见的数组陷阱。这个语句乍一看似乎可行。PowerShell 复制 if ( $array -eq $null) { 'Array is $null' } ...
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...
As a result, the $z array contains 1, 3, 5, and 9.To delete an array, assign a value of $null to the array. The following command deletes the array in the $a variable.$a = $nullYou can also use the Remove-Item cmdlet, but assigning a value of $null is faster, especially ...
Now, what if you’d like to know if the array $arrColors doesn’t contain the color purple. In that case, just use the –notcontains operator, an operator that returns True if the target value can’t be found in the array. In other words: Copy $arrColors -notcontains "violet" ...
default option. In this case, we wantYesto be the default option, so we pass PromptForChoice the value0; that’s becauseYesis the first item in our array of menu options. (And the first item in an array always has the index number 0.) What if we wantedNoto be the default option?
$array = 1,2,3,4 [string]$array Output Copy 1 2 3 4 To change the separator, add the $OFS variable by assigning a value to it. The variable must be named $OFS. PowerShell Copy $OFS = "+" [string]$array Output Copy 1+2+3+4 To restore the default behavior, ...
$error[0].Exception contains the original exception object as it was thrown to PowerShell. If we explore that object (also piped to get-member) we can see important items to pull up like stack trace, source, HResult, InnerException, etc.Diving...
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 ...