isRealFunction property

bool isRealFunction

Determines whether this string represents a valid real function f(x) or not. For example, this method returns true with the following inputs:

• "x/2"
• "3*x-6"
• "x^2 + sin(x / 2)"
• "10 + 8"

The only possible variable is "x". The product always needs the * operator.

• "3x - 5" // Bad
• "3*x - 5" // Good

Implementation

bool get isRealFunction =>
    length > 0 && ExpressionParser._parser.accept(this);