[chuck-users] Coin in Chuck

Hi , in supercollider there is a number method called coin. It just gives you back true or false based on probabilities. For example: 0.2.coin; -------------> this means 20 % chance for true. So if i do : if(0.2.coin,{ doSomething(); }); The function is gonna have 20% change to be called each time i run that code. Is there is something like this in chuck? cheers. R.