Internal
If you have toggle keys in chords, their are "chains" of the same toggle key that would be physically impossible. For example: toggle(on) toggle(on).
toggle(on) toggle(on)
This guards against that.
This does NOT guard against duplicates and errors in the same chord, for that see isValidChord.
If you have toggle keys in chords, their are "chains" of the same toggle key that would be physically impossible. For example:
toggle(on) toggle(on).This guards against that.
This does NOT guard against duplicates and errors in the same chord, for that see isValidChord.