Add Exponent operator

[malown]

Add Exponent operator

[bbjay]

Just came across the same issue.
The error message I got was
"NoSuchMethodError: Class 'double' has no instance method '^'."

I first tried to define a '^' method with pow in the context, but it looks like the context is just for variables and functions, not for infix/binary operators.

In the end I got it working with a custom evaluator:

import 'dart:math';

class MyEvaluator extends ExpressionEvaluator {
	const MyEvaluator();

	@override
	evalBinaryExpression(BinaryExpression expression, Map<String, dynamic> context) {
		if (expression.operator == '^') {
			final left = eval(expression.left, context);
			final right = () => eval(expression.right, context);
			return pow(left, right());
		}
		return super.evalBinaryExpression(expression, context);
	}
}

[apgapg]

Its already there i guess
case '^': return left ^ right();

Try a test case of 2^2 and see if it evaluates correctly

[malown]

That's the bitwise XOR operator
https://en.wikipedia.org/wiki/Bitwise_operations_in_C#Bitwise_XOR_^

[malown]

That will interfere with the bitwise XOR mentioned above. Also, you didn't set the precedence for the operator so the expression 5 * 3^2 gets evaluated as (5 * 3)^2

Check out my repo for a solution. I Used the ° sign as the exponent operator as i couldn't get ** to get parsed properly

https://github.com/malown/expressions

[apgapg]

You can simply define a callMemberExpression like 'pow(2,2)'

[malown]

For my usecase i need the expression to be easily readable by humans without using regex

[Throvn]

Does someone have a solution for this?
Unfortunately @malown took all of their repositories down
and I have no clue on how to extend the code snippet above to make it work properly :(