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Partial Function

A clean way to define function as a set of smaller functions where each has defined start and end bounds.

Partial Function

Achieves the following: f(x) = { x if 0 <= x < 5 x * 2 if 5 <= x <= 10 } Expressed as: rs let p = PartialFunction::new() .with(0.0, 5.0, Box::new(|x| x )) .with(5.0, 10.0, Box::new(|x| x * 2)) .build(); assert_eq!(p.eval(5.0), Some(10.0));

Lower Partial Function

Achieves the following: f(x) = { x if 0 <= x < 5 x * 2 if 5 <= x } Expressed as: rs let f = LowerPartialFunction::new() .with(0.0, Box::new(|x| x )) .with(5.0, Box::new(|x| x * 2)) .build(); assert_eq!(f.eval(5.0), Some(10.0));