$Lstr: Difference between revisions
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==Syntax== | ==Syntax== | ||
<p class="syntax">%longstr = $Lstr(longstring) | <p class="syntax"><span class="term">%longstr</span> = <span class="literal">$Lstr</span>(longstring) | ||
</p> | </p> | ||
Revision as of 23:39, 12 April 2013
Treat a string as longstring
Most Sirius $functions have been deprecated in favor of Object Oriented methods. There is no OO equivalent for the $Lstr function.
This function takes a String or Longstring input and produces a Longstring output.
Syntax
%longstr = $Lstr(longstring)
%longstr is a copy of longstring.
The longstring argument is an arbitrary string or longstring.
Usage notes
- The main utility of the $Lstr function is to force a STRING WITH expression that is its argument to be upgraded to a LONGSTRING WITH expression.
For example,
IF %COMEDIANS EQ (%WHO WITH ' Costello')
truncates
%WHO WITH 'Costello'at 255 bytes before the comparison, even if%COMEDIANSis a LONGSTRING %variable. However, this statement does not:IF %COMEDIANS EQ $Lstr(%WHO WITH ' Costello')