[英]Powershell string does not contain
I have some code that takes in a string, 我有一些代码接受一个字符串,
Foreach($user in $allUsers){
if($user.DisplayName.ToLower().Contains("example.com") -or $user.DisplayName.ToLower()) {
} else {
$output3 = $externalUsers.Rows.Add($user.DisplayName)
}
}
Part of the if
right after the -or
I need to check if the string does not contain an @ sign. -or
之后的部分if
-or
我需要检查字符串是否包含@符号。 How can I check to see if the @ sign is missing? 如何检查@符号是否丢失?
There are a million ways to do it, I would probably go for the following due to readability: 有一百万种方法可以做到,由于可读性,我可能会选择以下方法:
$user.DisplayName -inotmatch "@"
The -match
operator does a regex match on the the left-hand operand using the pattern on the right-hand side. -match
运算符使用右侧的模式对左侧操作数执行正则表达式匹配。
Prefixing it with i
make it explicitly case- i nsensitive, and the not
prefix negates the expression 它的前缀与i
使其明确区分我 nsensitive,而not
前缀否定表达
You could also do: 你也可以这样做:
-not($user.DisplayName.ToLower().Contains("@"))
or
!$user.DisplayName.ToLower().Contains("@")
For simple wildcard text-matching (maybe you hate regex, what do I know?): 对于简单的通配符文本匹配(也许你讨厌正则表达式,我知道什么?):
$user.DisplayName -notlike "*@*"
Or alternatively look for the substring with IndexOf; 或者用IndexOf查找子字符串;
$user.DisplayName.IndexOf("@") -eq (-1)
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