Take a look at the example below. What’s going on?
There’s a variable
r that gets a certain value each time the loop is played and that value is being used as the release option for play and as the sleep length. A variable is a bit like a box where you can store things and take things out. Using a variable is as simple as
variable_name = variable_value. Now the variable_value is stored in variable_name. You can get the value just by typing variable_name.
Let’s add a synth and bass to the example to try out variables. The
:keys loop is simple, nothing new happening, but the
:bass loop is a bit tricky:
n = (chord :c2, :minor).tick takes a note from a C minor chord and saves it to a variable named
.tick always moves forward to the next value after it’s called.
play n plays the saved note. Then
.tick is called again to get the next note from the chord. When the loop starts again,
.tick continues from where it was.