Struct qoqo_calculator::Calculator

pub struct Calculator {
    pub variables: HashMap<String, f64>,
}

Struct for parsing string expressions to floats

Fields

variables: HashMap<String, f64>

HashMap of variables in current Calculator

Implementations

impl Calculator

pub fn new() -> Self

Create new Calculator.

pub fn set_variable(&mut self, name: &str, value: f64)

Set variable for Calculator.

Arguments

1. name - Name of the variable
2. value - Float value of the variable

pub fn get_variable(&self, name: &str) -> Result<f64, CalculatorError>

Get variable for Calculator.

Arguments

1. name - Name of the variable

Returns

value - Result

pub fn parse_str(&mut self, expression: &str) -> Result<f64, CalculatorError>

Parse a string expression.

Arguments

1. expression - Expression that is parsed

pub fn parse_get(
    &mut self,
    parse_variable: CalculatorFloat
) -> Result<f64, CalculatorError>

Function parse_get

Parse a CalculatorFloat to float

Arguments

1. parse_variable - Parsed string CalculatorFloat or returns float value

Trait Implementations

impl Clone for Calculator

fn clone(&self) -> Calculator

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Calculator

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

Formats the value using the given formatter.

impl Default for Calculator

fn default() -> Self

Returns the “default value” for a type.