Function dot 

pub fn dot<'a>(exprs: &[Expr<'a>], coeffs: &[f64]) -> Expr<'a>

Dot product of expressions with scalar coefficients: sum_{i} c_i * e_i.

Both arguments are slices. Pass owned containers by reference: &vec, vec.as_slice(), or &array.

Panics

Panics if exprs and coeffs have different lengths, or if exprs is empty (the result needs an arena handle).