Pindex pattern that indexes into an array

Pindex(list, index, repeats)

This allows an ArrayedCollection to be accessed within patterns. 

list is the array and index the value to retrieve - both of these arguments can themselves be Patterns.

repeats specifies the number of repeats.

// example

(

SynthDef(\help_pindex, { | out, amp=0.1, freq=440, gate=1 |

var son = Saw.ar(freq * [0.99, 1, 1.01]).mean;

son = son * EnvGen.ar(Env.adsr, gate: gate, doneAction:2);

Out.ar(out, son.dup * amp);

}).add;

)

(

var data = [7, 13, 12, 2, 2, 2, 5];

var indices = [0, 0, 2, 0, 4, 6, 7];

Pbind(

\instrument, \help_pindex,

\choice, Prand(indices, inf),

\degree, Pindex(data, Pkey(\choice), inf),

\dur, 0.7

).play

)