$List_Global_Del and $List_Session_Del

From m204wiki
Jump to navigation Jump to search

$List_Global_Del and $List_Session_Del: Delete global/session $lists

Note: Many $functions have been deprecated in favor of Object Oriented methods. There is no OO equivalent for the $List_Global_Del and $List_Session_Del functions.

These functions delete one or more global or session $lists that were created with either $ListSav (or $ListSave), $List_Global, or $List_Session in the current or any previous SOUL program. It always returns a result of 1.

$List_Global_Del and $List_Session_Del accept one argument and return a numeric result. Both are callable $functions.

Syntax

[%RESULT =] $List_Global_Del(name)

[%RESULT =] $List_Session_Del(name)

Syntax terms

%result Always set to 1.
%result The name of the global or session $list or $lists to be deleted. If not specified, only a $list with a null name is deleted. This argument can contain wildcard characters, as described below.

Usage notes

  • The name specified for $List_Global_Del or $List_Session_Del can be an explicit name or it can contain the following wildcard characters:
    * Matches any number of characters including none
    ? Matches any single character
    " Indicates that the next character must be treated literally even if it is a wildcard character.

    For example, the following statement would delete only a global $list named TYRANNOSAURUS:

    %rc = $List_Global_Del('TYRANNOSAURUS')

    The following would delete globals $lists named STEG, STEGOSAURUS, and STEG.DATA, if they existed:

    %rc = $List_Global_Del('STEG*')

    The following would delete session $lists named STAN, STEP, and STUN.DATA, if they existed:

    %rc = $List_Session_Del('ST??')

    The following would delete globals $lists named *, *LOOK, and *ZAP.DATA, if they existed:

    %rc = $List_Global_Del('"**')

    The following would delete all session $lists:

    %rc = $List_Session_Del('*')

  • When a $List_Global_Del or $List_Session_Del is issued against a global or session $list that has a $list identifier associated with it, that $list identifier becomes invalid. For example, after issuing the following sequence, the $list identifier in %listc is no longer valid:

    %listc = $List_Global('VELOCIRAPTOR') %rc = $List_Global_Del('VEL*')

    $List_Global_Del does not distinguish among the manner in which a global $list was created; it will delete any $list created with $List_Global, $Listsave, or $Listsav, whether or not it has been referred to with any of these $functions in the current request. Since session $lists can only be created with $List_Session, $List_Session_Del will delete only $lists created by $List_Session.

  • A $List_Session_Del call when there is no session open causes a request cancellation.

Products authorizing $List_Global_Del and $List_Session_Del

Retrieved from "https://m204wiki.rocketsoftware.com/index.php?title=$List_Global_Del_and_$List_Session_Del&oldid=116851"