Help/Streams-Patterns-Events/Patterns/Pselect.html

   1 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
   2 <html>
   3 <head>
   4 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
   5 <meta http-equiv="Content-Style-Type" content="text/css">
   6 <title></title>
   7 <meta name="Generator" content="Cocoa HTML Writer">
   8 <meta name="CocoaVersion" content="949.43">
   9 <style type="text/css">
  10 p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 12.0px Helvetica}
  11 p.p2 {margin: 0.0px 0.0px 0.0px 0.0px; font: 12.0px Helvetica; min-height: 14.0px}
  12 p.p3 {margin: 0.0px 0.0px 0.0px 0.0px; font: 9.0px Monaco}
  13 span.s1 {font: 18.0px Helvetica}
  14 span.s2 {text-decoration: underline ; color: #0000bf}
  15 span.s3 {color: #0000bf}
  16 span.s4 {color: #0000bf}
  17 span.Apple-tab-span {white-space:pre}
  18 </style>
  19 </head>
  20 <body>
  21 <p class="p1"><span class="s1"><b>Pselect<span class="Apple-tab-span">  </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span></b></span><b>select values from a pattern</b></p>
  22 <p class="p2"><br></p>
  23 <p class="p1"><b>superclass: FuncFilterPattern</b></p>
  24 <p class="p2"><br></p>
  25 <p class="p1"><b>Pselect(func, pattern)</b></p>
  26 <p class="p2"><br></p>
  27 <p class="p1">returns values for which the function returns true. the value is passed to the function</p>
  28 <p class="p2"><br></p>
  29 <p class="p1">see also: <a href="Pcollect.html"><span class="s2">Pcollect</span></a>, <a href="Preject.html"><span class="s3">Preject</span></a></p>
  30 <p class="p2"><br></p>
  31 <p class="p3">(</p>
  32 <p class="p3"><span class="s4">var</span> a, b;</p>
  33 <p class="p3">a = <span class="s4">Pselect</span>({ arg item; item != 2 }, Pseq(#[1, 2, 3],inf));</p>
  34 <p class="p3">x = a.asStream;</p>
  35 <p class="p3">9.do({ x.next.postln; });</p>
  36 <p class="p3">)</p>
  37 <p class="p2"><br></p>
  38 <p class="p1">the message select returns a Pselect when passed to a pattern</p>
  39 <p class="p2"><br></p>
  40 <p class="p3">(</p>
  41 <p class="p3"><span class="s4">var</span> a, b;</p>
  42 <p class="p3">a =<span class="Apple-converted-space">  </span>Pseq(#[1, 2, 3],inf).select({ arg item; item != 2 });</p>
  43 <p class="p3">a.postln;</p>
  44 <p class="p3">x = a.asStream;</p>
  45 <p class="p3">9.do({ x.next.postln; });</p>
  46 <p class="p3">)</p>
  47 </body>
  48 </html>