Advanced Functions

[andydude]

There are several features that make it impossible to write advanced functions in Pash, such as functions that process records like other Cmdlets can. Among these features are the language features:

• attributes
• DynamicParam {...}
• Begin {...}
• Process {...}
• End {...}

For reference, these features are documented by the following PowerShell articles:

• Functions_Advanced
• Functions_Advanced_Methods
• Functions_Advanced_Parameters
• Functions_CmdletBindingAttribute
• Functions_OutputTypeAttribute

An example of a currently failing test case is:

Function Clear-Host
{
    Begin
    {
        [System.Console]::Clear()
    }
}

which currently fails with the error Command 'Begin' not found. It currently works perfectly without the Begin block, but that's not the point. The point is that more advanced features, like Process require these blocks to separate each section of the function.