Support ^ as pow operator about expression HOT 2 CLOSED

Yes, it's completely possible - just define a "^" operator for your expression. The only reason this isn't built-in is that ^ isn't universally recognised as the exponent operator - C uses it as bitwise xor for example.

EDIT: here's how:

let expression = "2 ^ 3"

let result = try Expression(
    expression,
    symbols: [
        .infix("^"): { pow($0[0], $0[1]) }
    ]
).evaluate()

print(result) // 8

from expression.

I must say I really like the API that you expose. Well done!

from expression.