Function mice::roll

pub fn roll(input: &str) -> Result<ExpressionResult, RollError>

Evaluate a dice expression! This function takes the usual dice expression format, and allows an arbitrary number of terms.

let dice_expression = "d20 + 5 - d2";
println!("{}", roll(dice_expression)?);

An Err is returned in the following cases:

• A d0 is used
• The sum of all terms is too high
• The sum of all terms is too low
• Nonsense input