Struct MaterialDatabase 

pub struct MaterialDatabase { /* private fields */ }

An in-memory database of material entries.

Implementations

impl MaterialDatabase

pub fn new() -> Self

Create an empty material database.

pub fn with_defaults() -> Self

Create a database pre-populated with common engineering materials.

Includes: steel 1020, aluminium 6061, copper, titanium Ti-6Al-4V, PTFE, water (liquid, 20 °C), and dry air (20 °C, 1 atm).

pub fn add_material(&mut self, entry: MaterialEntry)

Add a material to the database.

pub fn get_material(&self, name: &str) -> Option<&MaterialEntry>

Look up a material by name (case-sensitive).

Returns Some(&MaterialEntry) if found, None otherwise.

pub fn remove_material(&mut self, name: &str) -> bool

Remove a material by name.

Returns true if a material was removed, false if not found.

pub fn len(&self) -> usize

Returns the number of entries in the database.

pub fn is_empty(&self) -> bool

Returns true if the database has no entries.

pub fn search_by_density( &self, min_density: f64, max_density: f64, ) -> Vec<&MaterialEntry>

Return all materials whose density falls within [min_density, max_density].

pub fn search_by_youngs_modulus( &self, min_e: f64, max_e: f64, ) -> Vec<&MaterialEntry>

Return all materials whose Young’s modulus falls within [min_e, max_e].

pub fn export_json(&self) -> String

Serialise the entire database to a JSON string.

The format is a JSON array of objects: [{"name":..., ...}, ...].

pub fn import_json(json: &str) -> Result<Self, String>

Deserialise a database from a JSON string produced by export_json.

Returns Err if parsing fails. This is a minimal hand-rolled parser that handles the exact format produced by export_json.

Trait Implementations

impl Debug for MaterialDatabase

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

Formats the value using the given formatter.

impl Default for MaterialDatabase

fn default() -> MaterialDatabase

Returns the “default value” for a type.