HelpSource/Classes/UnaryOpFunction.schelp

   1 class::UnaryOpFunction
   2 summary::represent a unary oparation on a function
   3 related:: Classes/UnaryOpStream, Classes/Punop, Classes/BinaryOpFunction, Classes/NAryOpFunction
   4 categories::Core
   5
   6 description::
   7 Operating on functions instead of numbers, what results is not a result of the calculation, but a structure that represents that calculation.
   8
   9 examples::
  10
  11 code::
  12 a = 2.sqrt; // result is square root of two (approximate floating point).
  13 a = { b }.sqrt; // result is  a UnaryOpFunction
  14 b = 2;
  15 a.value; // now it is evaluated, and the result is calculated
  16 b = 9;
  17 a.value; // again, with a different value.
  18 ::
  19
  20 code::
  21 // sound example
  22 (
  23 var a = { 19.rand };
  24 var b = a.sqrt;
  25 fork {
  26         15.do {
  27                 (instrument: \default, note: [a.value, b.value]).play;
  28                 0.3.wait;
  29         }
  30 }
  31 )
  32 ::