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...
string[] Split(char[] separator, int count) string[] Split(char[] separator, System.StringSplitOptions options) string[] Split(char[] separator, int count, System.StringSplitOptions options) string[] Split(string[] separator, System.StringSplitOptions options) string[] Split(string[] separator, int...
[int] 、[long]、[string] 、[char] 、[bool] 、[byte] 、[double] 、[decimal] 、[single] [array] :数组对象 [xml] :XML对象 [hashtable] :哈希表对象,类似于一个字典对象 二、常量 PowerShell常量的值永远不会变。常量不能被删除。 使用常量之前,需要通过Set-Variable来创建常量,且指定一些参数来使...
-match, -imatch, -cmatch - string matches regex pattern -notmatch, -inotmatch, -cnotmatch - string doesn't match regex pattern Replacement -replace, -ireplace, -creplace - replaces strings matching a regex pattern Containment -contains, -icontains, -ccontains - collection contains a value...
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 ...
$arr = ipconfig $arr $arr -is [array] \\ 判断是否是数组 You can't use 'macro parameter character #' in math mode arr=@() #创建空数组 $arr=1..10,"string",(get-date)#创建混合数组 PowerShell访问数组 $arr[0..2] PowerShell自定义函数及调用 代码语言:javascript 代码运行次数:0 运行 ...
We are given an array and element.Our goal is to check if array contains the element. For instance, given an array[PowerShell", "Java", "PHP"], we want to check if the string"Java"is an element of this array. This simple query opens up a range of important considerations such as ...
The value that follows the function name is assigned to the first position in the $args array, $args[0]. The following Get-Extension function adds the .txt filename extension to a filename that you supply: PowerShell Copy function Get-Extension { $name = $args[0] + ".txt" $name ...
Suppose we added Violet Beauregard (from the movie Willie Wonka and the Chocolate Factory) to our array. What do you think we’ll get back if we run this command:Copy $arrColors -contains "violet" That’s right; we’ll get back False. That’s because there’s no array item named ...
[int] 、[long]、[string] 、[char] 、[bool] 、[byte] 、[double] 、[decimal] 、[single] [array] :数组对象 [xml] :XML对象 [hashtable] :哈希表对象,类似于一个字典对象 二、常量 PowerShell常量的值永远不会变。常量不能被删除。 使用常量之前,需要通过Set-Variable来创建常量,且指定一些参数来使...