Vocabularygame.inputInputsOutputsWord descriptionOutputs a symbol representing the change in a key or button's state given a "before" and "after" sample of its state. Outputs
pressed if
old? is false and
new? is true,
released if
old? is true and
new? is false, or
f if the two inputs have the same boolean value.
See alsobuttons-delta,
buttons-delta-asDefinition