$ListDel: Difference between revisions
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<span class="pageSubtitle">Release CCATEMP storage used for $list</span> | <span class="pageSubtitle">Release CCATEMP storage used for $list</span> | ||
<p class=" | <p class="warn"><b>Note: </b>Many $functions have been deprecated in favor of Object Oriented methods. There is no OO equivalent for the $ListDel function, but stringlists can be emptied of content with the <var>[[Empty (Stringlist subroutine)|Empty]]</var> subroutine.</p> | ||
This function releases CCATEMP storage containing $list items, which helps reduce CCATEMP usage and possibly reduce disk I/O. The information contained in the $list is lost after a $ListDel. | This function releases CCATEMP storage containing $list items, which helps reduce CCATEMP usage and possibly reduce disk I/O. The information contained in the $list is lost after a <var>$ListDel</var>. | ||
Note that while it is not strictly necessary to $ListDel any $list since they are cleaned up at the termination of the current procedure, the processing for $ListDel is considerably more efficient than end of evaluation cleanup and can actually reduce CCATEMP I/O. | Note that while it is not strictly necessary to <var>$ListDel</var> any $list since they are cleaned up at the termination of the current procedure, the processing for <var>$ListDel</var> is considerably more efficient than end of evaluation cleanup and can actually reduce CCATEMP I/O. | ||
The $ListDel function accepts one argument and returns a numeric result. It is a | The <var>$ListDel</var> function accepts one argument and returns a numeric result. It is a [[Calling Sirius Mods $functions|callable]] $function. | ||
The only argument is the identifier of the $list that is to be deleted. | The only argument is the identifier of the $list that is to be deleted. | ||
==Syntax== | ==Syntax== | ||
<p class="syntax" | <p class="syntax">[%RESULT =] $ListDel(list_identifier) | ||
</p> | </p> | ||
<p class="code"> | <p><var class="term">%result</var> is zero, or it is a negative error code if an error has occurred.</p> | ||
===Error codes=== | |||
<p class="code">-5 - Required argument not specified | |||
-6 - $List identifier invalid | |||
</p> | </p> | ||
==Products authorizing {{PAGENAMEE}}== | |||
<ul class="smallAndTightList"> | <ul class="smallAndTightList"> | ||
<li>[[Sirius functions]]</li> | <li>[[List of $functions|Sirius functions]]</li> | ||
<li>[[Fast/Unload User Language Interface]]</li> | <li>[[Fast/Unload User Language Interface]]</li> | ||
<li>[[Janus Open Client]]</li> | <li>[[Media:JoclrNew.pdf|Janus Open Client]]</li> | ||
<li>[[Janus Open Server]]</li> | <li>[[Media:JosrvrNew.pdf|Janus Open Server]]</li> | ||
<li>[[Janus Sockets]]</li> | <li>[[Janus Sockets]]</li> | ||
<li>[[Janus Web Server]]</li> | <li>[[Janus Web Server]]</li> | ||
<li> | <li>Japanese functions</li> | ||
<li>[[Sir2000 Field Migration Facility]]</li> | <li>[[Media:SirfieldNew.pdf|Sir2000 Field Migration Facility]]</li> | ||
</ul> | </ul> | ||
[[Category:$Functions|$ListDel]] | [[Category:$Functions|$ListDel]] | ||
Latest revision as of 22:51, 20 September 2018
Release CCATEMP storage used for $list
Note: Many $functions have been deprecated in favor of Object Oriented methods. There is no OO equivalent for the $ListDel function, but stringlists can be emptied of content with the Empty subroutine.
This function releases CCATEMP storage containing $list items, which helps reduce CCATEMP usage and possibly reduce disk I/O. The information contained in the $list is lost after a $ListDel.
Note that while it is not strictly necessary to $ListDel any $list since they are cleaned up at the termination of the current procedure, the processing for $ListDel is considerably more efficient than end of evaluation cleanup and can actually reduce CCATEMP I/O.
The $ListDel function accepts one argument and returns a numeric result. It is a callable $function.
The only argument is the identifier of the $list that is to be deleted.
Syntax
[%RESULT =] $ListDel(list_identifier)
%result is zero, or it is a negative error code if an error has occurred.
Error codes
-5 - Required argument not specified -6 - $List identifier invalid