Struct Variable 

pub struct Variable {
    pub terms: HashMap<String, Term>,
    /* private fields */
}

A crisp variable with an inclusive numeric domain and a set of named terms.

Fields

terms: HashMap<String, Term>

Mapping from term name to its labeled membership function wrapper.

Implementations

impl Variable

pub fn new(min: Float, max: Float) -> Result<Self>

Constructs a new variable, validating that min < max.

pub fn insert_term(&mut self, name: &str, t: Term) -> Result<()>

Inserts a named term; rejects empty names and duplicates.

• Empty name -> FuzzyError::EmptyInput
• Duplicate name -> FuzzyError::TypeMismatch

pub fn get(&self, name: &str) -> Option<&Term>

Returns a reference to the term for name, if present.

pub fn eval(&self, name: &str, x: Float) -> Result<Float>

Evaluates the membership degree for term name at input x.

• Unknown term -> FuzzyError::TypeMismatch
• x out of [min, max] -> FuzzyError::OutOfBounds

pub fn domain(&self) -> (Float, Float)

Returns the range of domain for the membership function.(term)

• retunrs (min, max)