$Lstr: Difference between revisions
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==Syntax== | ==Syntax== | ||
<p class="syntax"><section begin="syntax" />% | <p class="syntax"><section begin="syntax" />%longstr = $Lstr(longstring) | ||
<section end="syntax" /></p> | <section end="syntax" /></p> | ||
<p>% | <p>%longstr is a copy of <var class="term">longstring</var>.</p> | ||
The argument is an arbitrary string or longstring. | The argument is an arbitrary string or longstring. | ||
Revision as of 21:32, 30 October 2012
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.
The $Lstr function accepts one argument and returns a longstring result.
Syntax
<section begin="syntax" />%longstr = $Lstr(longstring) <section end="syntax" />
%longstr is a copy of longstring.
The 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')