Struct Compiled 

pub struct Compiled { /* private fields */ }

A compiled expression: evaluates in about a hundred nanoseconds.

Implementations

impl Compiled

pub fn new(src: &str, scope: &Scope<'_>) -> Result<Self, ExprError>

Compiles src against scope. An expression that folds to a non-finite constant (1/0, log(-1)) is an error.

pub fn constant(v: f64) -> Self

A constant (no source text).

pub fn as_const(&self) -> Option<f64>

The value if it folded to a constant.

pub fn source(&self) -> &str

pub fn eval(&self, frame: &Frame<'_>) -> f64

The value on frame (may be non-finite: super::Track::eval checks).

Trait Implementations

impl Clone for Compiled

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Compiled

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

Formats the value using the given formatter.

impl PartialEq for Compiled

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Compiled