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

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  25 <p class="p1"><span class="s1"><b>PstepNfunc<span class="Apple-tab-span">       </span></b></span><span class="s2"><span class="Apple-tab-span">        </span><span class="Apple-tab-span">    </span></span><b>combinatoric pattern <span class="Apple-converted-space"> </span></b></p>
  26 <p class="p2"><br></p>
  27 <p class="p1">superclass: <a href="Pattern.html"><span class="s3">Pattern</span></a></p>
  28 <p class="p2"><br></p>
  29 <p class="p2"><br></p>
  30 <p class="p1">combines an arbitrary number of patterns by evaluating a function (depth first traversal).</p>
  31 <p class="p1">when a stream ends it is recreated from its pattern until the top stream ends.</p>
  32 <p class="p3"><br></p>
  33 <p class="p1">see also: <b>PstepNadd</b></p>
  34 <p class="p3"><br></p>
  35 <p class="p3"><br></p>
  36 <p class="p1"><span class="s2"><span class="Apple-tab-span">    </span></span><b>*new(func, patternList);</b></p>
  37 <p class="p2"><br></p>
  38 <p class="p2"><br></p>
  39 <p class="p2"><br></p>
  40 <p class="p2"><br></p>
  41 <p class="p4">//examples</p>
  42 <p class="p5">(</p>
  43 <p class="p5">f = { <span class="s4">arg</span> vals;</p>
  44 <p class="p5"><span class="Apple-tab-span">     </span>vals.postln;</p>
  45 <p class="p5">};</p>
  46 <p class="p6"><span class="s5">x = </span>PstepNfunc<span class="s5">(f, [</span></p>
  47 <p class="p5"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="s4">Pseq</span>([1, 2, 3]), <span class="s4">Pseq</span>([4, 5, 6]), <span class="s4">Pseq</span>([7, 8, 9])</p>
  48 <p class="p5"><span class="Apple-tab-span">     </span>]).asStream;</p>
  49 <p class="p5">50.do({ x.next });</p>
  50 <p class="p5">)</p>
  51 <p class="p3"><br></p>
  52 <p class="p5">(</p>
  53 <p class="p5">f = { <span class="s4">arg</span> vals;</p>
  54 <p class="p5"><span class="Apple-tab-span">     </span><span class="s4">var</span> r;</p>
  55 <p class="p5"><span class="Apple-tab-span">     </span>r = vals.copy.removeAt(0);</p>
  56 <p class="p5"><span class="Apple-tab-span">     </span>vals.do({ <span class="s4">arg</span> item;<span class="Apple-converted-space">  </span>r = item / r.squared * 10 });</p>
  57 <p class="p5"><span class="Apple-tab-span">     </span>r</p>
  58 <p class="p5">};</p>
  59 <p class="p6"><span class="s5">x = </span>PstepNfunc<span class="s5">(f,<span class="Apple-converted-space"> </span></span></p>
  60 <p class="p5"><span class="Apple-tab-span">     </span>[</p>
  61 <p class="p5"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="s4">Pseq</span>([1, 2, 3], inf),<span class="Apple-converted-space"> </span></p>
  62 <p class="p5"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="s4">Pseq</span>([2, pi, 1]),<span class="Apple-converted-space"> </span></p>
  63 <p class="p5"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="s4">Pseq</span>([0.1, 3, 0.2, 3])</p>
  64 <p class="p5"><span class="Apple-tab-span">     </span>]</p>
  65 <p class="p5"><span class="Apple-tab-span">     </span>).asStream;</p>
  66 <p class="p3"><br></p>
  67 <p class="p5">50.do({ x.next.postln });</p>
  68 <p class="p5">)</p>
  69 <p class="p3"><br></p>
  70 <p class="p4">// note that if the last pattern loops it will stick to that one:</p>
  71 <p class="p5">(</p>
  72 <p class="p5">f = { <span class="s4">arg</span> vals;</p>
  73 <p class="p5"><span class="Apple-tab-span">     </span>vals.postln;</p>
  74 <p class="p5">};</p>
  75 <p class="p5">x = <span class="s4">PstepNfunc</span>(f, [<span class="s4">Pseq</span>([1, 2, 3]), <span class="s4">Pseq</span>([10, 20, 30, 40]), <span class="s4">Pseq</span>([100, 200, 300], <span class="s4">inf</span>)]).asStream;</p>
  76 <p class="p5">50.do({ x.next });</p>
  77 <p class="p5">)</p>
  78 <p class="p3"><br></p>
  79 <p class="p3"><br></p>
  80 <p class="p5">(</p>
  81 <p class="p5">f = { <span class="s4">arg</span> vals;</p>
  82 <p class="p6"><span class="s5"><span class="Apple-tab-span">    </span></span>vals.inject(1, { arg x, y; x * y })</p>
  83 <p class="p5">};</p>
  84 <p class="p6"><span class="s5">x = </span>PstepNfunc<span class="s5">(f,<span class="Apple-converted-space"> </span></span></p>
  85 <p class="p5"><span class="Apple-tab-span">     </span>[</p>
  86 <p class="p5"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="s4">Pseq</span>([1, 2, 3], inf),<span class="Apple-converted-space"> </span></p>
  87 <p class="p5"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="s4">Pseq</span>([2, pi, 1]),<span class="Apple-converted-space"> </span></p>
  88 <p class="p5"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="s4">Pseq</span>([0.1, 3, 0.2, 3])</p>
  89 <p class="p5"><span class="Apple-tab-span">     </span>]</p>
  90 <p class="p5"><span class="Apple-tab-span">     </span>).asStream;</p>
  91 <p class="p3"><br></p>
  92 <p class="p5">50.do({ x.next.postln });</p>
  93 <p class="p5">)</p>
  94 <p class="p3"><br></p>
  95 <p class="p3"><br></p>
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