Struct Progression 

pub struct Progression {
    pub key: Option<String>,
    pub chords: Vec<Chord>,
}

An ordered sequence of chords, optionally in a named key.

Fields

key: Option<String>

Key the progression is heard in, if specified.

chords: Vec<Chord>

The chords in playing order.

Implementations

impl Progression

pub fn new(key: Option<String>, chords: Vec<Chord>) -> Result<Self, MusicError>

Builds a progression, validating that every chord duration is non-negative.

Trait Implementations

impl Clone for Progression

fn clone(&self) -> Progression

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Progression

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Eq for Progression

impl MusicObject for Progression

fn kind(&self) -> &'static str

Returns a stable, human-readable tag for this object kind.

fn duration(&self) -> Time

Returns the total duration this object occupies.

fn voices<'a>(&'a self, offset: Time, out: &mut Vec<TimedAtom<'a>>)

Appends the timed atoms produced by this object, shifted by offset.

fn clone_box(&self) -> Box<dyn MusicObject>

Clones this object into a fresh boxed trait object.

fn as_any(&self) -> &dyn Any

Returns this object as a &dyn Any for downcasting.

impl PartialEq for Progression

fn eq(&self, other: &Progression) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for Progression