Struct LinearTerms 

pub struct LinearTerms<'a> {
    pub coeffs: Cow<'a, [(VarId, f64)]>,
    pub constant: f64,
}

Coefficients of a linear expression: sum(coeff * var) + constant.

The coefficient storage borrows directly from an ExprNode::Linear when possible and owns coefficients that must be synthesized while walking an expression tree. Call LinearTerms::into_owned before storing extracted terms beyond the lifetime of their ExprArena.

Fields

coeffs: Cow<'a, [(VarId, f64)]>

constant: f64

Implementations

impl<'a> LinearTerms<'a>

pub fn owned(coeffs: Vec<(VarId, f64)>, constant: f64) -> Self

Construct linear terms with owned coefficient storage.

pub fn borrowed(coeffs: &'a [(VarId, f64)], constant: f64) -> Self

Construct linear terms borrowing coefficient storage.

pub fn into_owned(self) -> LinearTerms<'static>

Detach these terms from their borrowed source.

This does not allocate when the coefficient storage is already owned.

Trait Implementations

impl<'a> Clone for LinearTerms<'a>

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'a> Debug for LinearTerms<'a>

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

Formats the value using the given formatter.

impl<'a> Default for LinearTerms<'a>

fn default() -> Self

Returns the “default value” for a type.