<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> <html> <head> <meta name="robots" content="index,nofollow"> <title>MLtonRandom - MLton Standard ML Compiler (SML Compiler)</title> <link rel="stylesheet" type="text/css" charset="iso-8859-1" media="all" href="common.css"> <link rel="stylesheet" type="text/css" charset="iso-8859-1" media="screen" href="screen.css"> <link rel="stylesheet" type="text/css" charset="iso-8859-1" media="print" href="print.css"> <link rel="Start" href="Home"> </head> <body lang="en" dir="ltr"> <script src="http://www.google-analytics.com/urchin.js" type="text/javascript"> </script> <script type="text/javascript"> _uacct = "UA-833377-1"; urchinTracker(); </script> <table bgcolor = lightblue cellspacing = 0 style = "border: 0px;" width = 100%> <tr> <td style = " border: 0px; color: darkblue; font-size: 150%; text-align: left;"> <a class = mltona href="Home">MLton MLTONWIKIVERSION</a> <td style = " border: 0px; font-size: 150%; text-align: center; width: 50%;"> MLtonRandom <td style = " border: 0px; text-align: right;"> <table cellspacing = 0 style = "border: 0px"> <tr style = "vertical-align: middle;"> </table> <tr style = "background-color: white;"> <td colspan = 3 style = " border: 0px; font-size:70%; text-align: right;"> <a href = "Home">Home</a> <a href = "TitleIndex">Index</a> </table> <div id="content" lang="en" dir="ltr"> <pre class=code> <B><FONT COLOR="#0000FF">signature</FONT></B> MLTON_RANDOM = <B><FONT COLOR="#0000FF">sig</FONT></B> <B><FONT COLOR="#A020F0">val</FONT></B> alphaNumChar: unit -> char <B><FONT COLOR="#A020F0">val</FONT></B> alphaNumString: int -> string <B><FONT COLOR="#A020F0">val</FONT></B> rand: unit -> word <B><FONT COLOR="#A020F0">val</FONT></B> seed: unit -> word option <B><FONT COLOR="#A020F0">val</FONT></B> srand: word -> unit <B><FONT COLOR="#A020F0">val</FONT></B> useed: unit -> word option <B><FONT COLOR="#0000FF">end</FONT></B> </PRE> <p> </p> <ul> <li> <p> <tt>alphaNumChar ()</tt> <br> returns a random alphanumeric character. </p> </li> <li class="gap"> <p> <tt>alphaNumString n</tt> <br> returns a string of length <tt>n</tt> of random alphanumeric characters. </p> </li> <li class="gap"> <p> <tt>rand ()</tt> <br> returns the next pseudo-random number. </p> </li> <li class="gap"> <p> <tt>seed ()</tt> <br> returns a random word from <tt>/dev/random</tt>. Useful as an arg to <tt>srand</tt>. If <tt>/dev/random</tt> can not be read from, <tt>seed ()</tt> returns <tt>NONE</tt>. A call to <tt>seed</tt> may block until enough random bits are available. </p> </li> <li class="gap"> <p> <tt>srand w</tt> <br> sets the seed used by <tt>rand</tt> to <tt>w</tt>. </p> </li> <li class="gap"> <p> <tt>useed ()</tt> <br> returns a random word from <tt>/dev/urandom</tt>. Useful as an arg to <tt>srand</tt>. If <tt>/dev/urandom</tt> can not be read from, <tt>useed ()</tt> returns <tt>NONE</tt>. A call to <tt>useed</tt> will never block -- it will instead return lower quality random bits. </p> </li> </ul> </div> <p> <hr> Last edited on 2007-08-23 03:45:02 by <span title="c-71-57-91-146.hsd1.il.comcast.net"><a href="MatthewFluet">MatthewFluet</a></span>. </body></html>