Struct Context

pub struct Context { /* private fields */ }

Implementations

impl Context

pub fn new() -> Self

Creates a new empty context.

pub fn with_variable(self, name: &str, val: f32) -> Self

Adds a variable to the context, overwriting it if already existing.

Examples

Basic usage:

use math_engine::context::Context;

let ctx = Context::new().with_variable("x", 32.0);

pub fn add_variable(&mut self, name: &str, val: f32) -> Result<(), ContextError>

Adds a variable to the context, checking whether it has already been defined.

Examples

Basic usage:

use math_engine::context::Context;

let mut ctx = Context::new();
ctx.add_variable("x", 32.0).unwrap();
ctx.add_variable("x", 31.0).unwrap(); // Panics

pub fn get_variable(&self, name: &String) -> Result<f32, ContextError>

Trait Implementations

impl Default for Context

fn default() -> Self

Returns the “default value” for a type.