<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN""http://www.w3.org/TR/html4/loose.dtd"> <HTML ><HEAD ><TITLE >length-string-unit-part</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.79"><LINK REL="HOME" TITLE="DSSSL Library Reference" HREF="index.html"><LINK REL="UP" TITLE="Miscellaneous" HREF="r300.htm"><LINK REL="PREVIOUS" TITLE="length-string-number-part" HREF="length-string-number-part.html"><LINK REL="NEXT" TITLE="normalize" HREF="normalize.html"></HEAD ><BODY CLASS="REFENTRY" BGCOLOR="#FFFFFF" TEXT="#000000" LINK="#0000FF" VLINK="#840084" ALINK="#0000FF" ><DIV CLASS="NAVHEADER" ><TABLE SUMMARY="Header navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="3" ALIGN="center" >DSSSL Library Reference: Part of the Modular DocBook Stylesheet distribution</TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A HREF="length-string-number-part.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="normalize.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="LENGTH-STRING-UNIT-PART" ></A >length-string-unit-part</H1 ><DIV CLASS="REFNAMEDIV" ><A NAME="AEN1800" ></A ><H2 >Name</H2 >length-string-unit-part -- Returns the unit part of a length string</DIV ><DIV CLASS="REFSYNOPSISDIV" ><A NAME="AEN1803" ></A ><H2 >Synopsis</H2 ><PRE CLASS="SYNOPSIS" >(length-string-unit-part lenstr)</PRE ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN1806" ></A ><H2 >Description</H2 ><P >Given a length as a string, return the units part.</P ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN1809" ></A ><H2 >Example</H2 ><P ><TT CLASS="LITERAL" >"100pt"</TT > returns <TT CLASS="LITERAL" >"pt"</TT >. <TT CLASS="LITERAL" >"30"</TT > returns <TT CLASS="LITERAL" >""</TT >. <TT CLASS="LITERAL" >"in"</TT > returns <TT CLASS="LITERAL" >"in"</TT >.</P ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN1818" ></A ><H2 >Author</H2 ><P >Norman Walsh, <ndw@nwalsh.com></P ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN1821" ></A ><H2 >Source Code</H2 ><PRE CLASS="PROGRAMLISTING" >(define (length-string-unit-part lenstr) ;; Returns the unit part of a length string (let ((number-part (length-string-number-part lenstr)) (strlen (string-length lenstr))) (if (equal? (string-length number-part) strlen) "" (substring lenstr (string-length number-part) strlen))))</PRE ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="length-string-number-part.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="index.html" ACCESSKEY="H" >Home</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="normalize.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >length-string-number-part</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="r300.htm" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >normalize</TD ></TR ></TABLE ></DIV ></BODY ></HTML >