Struct Diff 

pub struct Diff {
    pub f: Box<dyn Expr>,
    pub vars: IndexMap<Symbol, usize>,
}

Fields

f: Box<dyn Expr>

vars: IndexMap<Symbol, usize>

Implementations

impl Diff

pub fn new<'a, It: IntoIterator<Item = &'a Box<dyn Expr>>>( f: &Box<dyn Expr>, vars: It, ) -> Box<dyn Expr>

pub fn new_v2(f: Box<dyn Expr>, vars: IndexMap<Symbol, usize>) -> Diff

pub fn idiff(f: Box<dyn Expr>, var: Symbol, order: usize) -> Self

pub fn new_move<I, T>(f: Box<dyn Expr>, vars: I) -> Diff

where I: IntoIterator<Item = T>, T: IntoVarOrder,

Trait Implementations

impl Clone for Diff

fn clone(&self) -> Diff

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Expr for Diff

fn get_ref<'a>(&'a self) -> &'a dyn Expr

fn for_each_arg(&self, f: &mut dyn FnMut(&dyn Arg))

fn known_expr(&self) -> KnownExpr<'_>

fn from_args(&self, args: Vec<Box<dyn Arg>>) -> Box<dyn Expr>

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

fn str(&self) -> String

fn as_expr(&self) -> Option<Box<dyn Expr>>

fn args(&self) -> Vec<Box<dyn Arg>>

fn args_map_exprs( &self, _f: &dyn Fn(&dyn Expr) -> Box<dyn Arg>, ) -> Vec<Box<dyn Arg>>

fn as_arg(&self) -> Box<dyn Arg>

fn as_function(&self) -> Option<&Func>

fn equals(&self, other: &dyn Expr) -> bool

fn as_symbol(&self) -> Option<Symbol>

fn as_eq(&self) -> Option<Equation>

fn as_mul(&self) -> Option<&Mul>

fn as_pow(&self) -> Option<&Pow>

fn as_f64(&self) -> Option<f64>

fn to_cpp(&self) -> String

fn simplify(&self) -> Box<dyn Expr>

fn simplify_with_dimension(&self, dim: usize) -> Box<dyn Expr>

fn as_int(&self) -> Option<Integer>

fn pow(&self, exponent: &Box<dyn Expr>) -> Box<dyn Expr>

fn ipow(&self, exponent: isize) -> Box<dyn Expr>

fn sqrt(&self) -> Box<dyn Expr>

fn get_exponent(&self) -> (Box<dyn Expr>, Box<dyn Expr>)

fn diff(&self, var: &str, order: usize) -> Box<dyn Expr>

fn name(&self) -> String

fn subs(&self, substitutions: &[[Box<dyn Expr>; 2]]) -> Box<dyn Expr>

fn has(&self, expr: &dyn Expr) -> bool

fn has_box(&self, expr: Box<dyn Expr>) -> bool

fn expand(&self) -> Box<dyn Expr>

Expands an expression. For example: (x + y) * z -> xz + yz

fn factor(&self, factors: &[&dyn Expr]) -> Box<dyn Expr>

Factorizes an expression For example: factor(ax + cx + zy, [x]) -> (a + c)x + zy

fn is_one(&self) -> bool

fn is_neg_one(&self) -> bool

fn is_number(&self) -> bool

fn is_negative_number(&self) -> bool

fn is_zero(&self) -> bool

fn terms<'a>(&'a self) -> Box<dyn Iterator<Item = &'a dyn Expr> + 'a>

fn get_coeff(&self) -> (Rational, Box<dyn Expr>)

fn compare(&self, other: &dyn Expr) -> Option<Ordering>

fn evaluate(&self, vars: Option<HashMap<Symbol, BoxExpr>>) -> BoxExpr

impl FromStr for Diff

type Err = ParseDiffError

The associated error which can be returned from parsing.

fn from_str(s: &str) -> Result<Self, Self::Err>

Parses a string s to return a value of this type.

impl TryFrom<Captures<'_>> for Diff

type Error = ParseDiffError

The type returned in the event of a conversion error.

fn try_from(value: Captures<'_>) -> Result<Self, Self::Error>

Performs the conversion.