what means predicate c# code example

Example 1: predicate c#

static void Main(string[] args)
{
    Predicate<string> isUpper = delegate(string s) { return s.Equals(s.ToUpper());};
    bool result = isUpper("hello world!!");
}

Example 2: predicate c#

static void Main(string[] args)
{
    Predicate<string> isUpper = s => s.Equals(s.ToUpper());
    bool result = isUpper("hello world!!");
}