One thing to be aware of with PowerShell is that null strings passed to a commandlet or function don't stay null. They get converted to empty ... ... <看更多>

Notice that the empty string value doesn't match $null but $null matches both $null and an empty string. Testing reveals that the case for an ... ... <看更多>

Try the below code which will get the files and then get each file name without extension: $LibraryName = "Documents" $LibraryItems ... ... <看更多>

Ed Wilson, the Microsoft Scripting Guy talks about using static string methods to determine if a string is null or if it is empty. ... <看更多>

When given a JSON object (aka dictionary or hash) as input, it produces the value at the key "foo", or null if there's none present. A filter of the form .foo. ... <看更多>