Sort using 4th element?

[ludesroc]

Hi,

Is there a way to sort a list using the 4th element? 

sort(iList, :Ascending, key := :first)

sort(iList, :Ascending, key := :second)

sort(iList, :Ascending, key := :third)

sort(iList, :Ascending, key := :fourth)

Regards,

Luc

[Anonymous · Accepted solution]

The key parameter takes any function.  So to sort the fourth you need to create a function that gets the fourth element.

For example:

sort(iList, :Ascending, key := :fourth)

Function fourth(inList As List) As Any
    Return nth(4, inList)
End Function

This will also work in other functions, such as Find

Find(myValue, iList, key:=:fourth)

[ludesroc]

Thanks Farren! That's exactly was I was looking for! 

Now, I can I get this new function to remain in the functions list permanently? 

Regards,

Luc

[Anonymous · Accepted solution]

You're welcome.

To make the function system wide, place it in "C:\Program Files\Autodesk\Inventor ETO Components 2012\Library\UserLib" (adjust for your version of eto)

Also, if you found my solution helpful I would appreciate any kudos you would like to give (Accept as Solution is great too).  The two of these are used as a part of the formula to determine a users' "Ranking" and I'd like to increase mine 😛

http://forums.autodesk.com/t5/FAQ-How-To-Using-Autodesk/Kudos-New-April-18/m-p/2993368/highlight/tru...

http://forums.autodesk.com/t5/Autodesk-Discussion-Groups/How-Postings-Kudos-and-correct-answers-Equa...

[ludesroc]

Great! Thanks again!

Maybe one day I'll be a mentor as well 

Luc

[ebachrach]

Farren's answer is correct.

Keep in mind though that the fourth function he wrote , using nth(4, mylist) does not work in the same way that first,second and third do, nth(4,{3,2,1}) returns 1 (i.e. the last element of the list), thirst({3,2}) returns novalue.  No difference if your lists have the correct number of entities of course.

Elly

[Anonymous]

The function below will cause it to work the same as :first, :second, and :third.

Function fourth(inList As List) As Any

    If length(inlist) < 4 then

         Return NoValue

    Else
        Return nth(4, inList)

    End If
End Function