PowerShell 4.0 Language Reference

Because PowerShell is a dynamic language, sometimes you don’t know if a command will return an array or a scalar. PowerShell solves this problem with the @( ) notation. An expression evaluated this way will always be an array. If the expression is already an array, it will simple be returned. If it wasn’t an array, a new … ................
................

In order to avoid copyright disputes, this page is only a partial summary.