ListExists

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×V4.0Ø

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Syntax -

If ListExists <ListName>

Description:

This command is used inside of an IF statement to determine if the List specified exists. This command is useful in discovery of existing lists, which will help eliminate errors/extra code relating to:

•	Trying to create a list that already exists which will result in an error.

•	Using a variable to set a flag that list exists is extra code that is no longer needed.

•	Disposing and re-creating a list is extra code than can potentially lose needed info from original list.

Note: This command was introduced in EMUE V4 and will not work with previous versions.

Sample 1:

The following IF statement will look for the existence of a List named "Name_Of_List", if found it will proceed with the rest of the script, if not found it will go into debug mode.

If ListExists Name_Of_List Then

LogLine "List found, it does exist. Proceeding to ListFound"

Call ListFound

Else

LogLine "List not found, it does not exist. Please advise."

Debug

EndIf

Sample 2:

The following IF statement will look for the existence of a List named "Name_Of_List", if found it will GoTo Label ListFound then proceed with the rest of the script, if not found it will go onto the next line of code.

If ListExists Name_Of_List GoTo ListFound

Sample 3:

If ListExists Name_Of_List Then

If EndOfList Name_Of_List Then

GetListCount Count_In_List

Else

GoTo

EndIf

Esle

EndIf