Calculator is a library which support calculates the value of string.
[dependencies]
calculator-rs = { version = "*" }fn main(){
{
let calculator = "1+1".calculate();
assert_eq!(calculator, Ok(Value::Integer(2)))
}
{
let calculator = "1*1".calculate();
assert_eq!(calculator, Ok(Value::Integer(1)))
}
{
let calculator = "2*4".calculate();
assert_eq!(calculator, Ok(Value::Integer(8)))
}
{
let calculator = "4!".calculate();
assert_eq!(calculator, Ok(Value::Integer(24)))
}
{
let calculator = "31%15".calculate();
assert_eq!(calculator, Ok(Value::Integer(1)))
}
{
let calculator = "1*!1".calculate();
assert!(calculator.is_err())
}
}