Brackets at the end of a function

PowerShell Help
1

This is a little script from the brilliant Bruce Payette,

Function tillXmas ()
{
    $now = [datetime]::Now
    [datetime] ( [string] $now.year + "-12-25") - $Now
}

On the function, why has Bruce add () at the end of ‘tillXmas’ ?

2

Habits of a .NET developer, I imagine. :slight_smile: It’s just an empty parameter list, and it’s optional. (If you use a param() block inside the function, such as for advanced functions, then you can’t have the parentheses after the name; they’re exclusive.)

3

Thanks Dave. :relaxed:

4

It’s used as an indicator for us to tell that the script was copied off the internet:-)

5

I am going to assume Bruce did it because it’s faster. In my testing, you save an average 0.0008 milliseconds at runtime if you include the otherwise superfluous parentheses. : )

6

Jokes aside… I do a lot of forms based scripts and I regularly use the parens after function names where I’m not taking params from user input.

Use param() inside the function if you need to set validation, switch, pipeline etc. settings.