Question

I want to be able to write something as

void Start(some condition that might evaluate to either true or false) {
    //function will only really start if the predicate evaluates to true
}

I’d guess it must be something of the form:

void Start(Predicate predicate) {
}

How can I check inside my Start function whenever the predicate evaluated to true or false? Is my use of a predicate correct?

Thanks

Answer 1

Here’s a trivial example of using a predicate in a function.

static void CheckRandomValueAgainstCriteria(Predicate<int> predicate, int maxValue)
{
    Random random = new Random();
    int value = random.Next(0, maxValue);

    Console.WriteLine(value);

    if (predicate(value))
    {
        Console.WriteLine("The random value met your criteria.");
    }
    else
    {
        Console.WriteLine("The random value did not meet your criteria.");
    }
}

…

CheckRandomValueAgainstCriteria(i => i < 20, 40);