No, C has no support for lambda expressions.

If you're willing to use C++, Boost has a library that emulates lambdas. Also, C++0x will have built-in support for lambda expressions.

There wasn't a huge demand for lambda expression support in C at the time, so the language didn't support it.

It looks like you’ve already got it in Lambda form, almost. You just didn’t use the lambda operator “=>”.

It’s an unnamed, inline, expression.

lambdas are usually small things you only use once, and as such you don’t need to declare and name them as functions for use in multiple places.

A lot of the time, you can place them completely on a single line, if that’s your coding style and the function is small enough.

The only things that would make your expression MORE lambda-esque is to place it on a single line and use the lambda operator:

string _result => foreach (char c in inputString) {if (c == 122) _result += "a"; else _result += Convert.ToChar(c+1); } return _result;

But that would be poor practice in this instance.

I’d go with something like this:

string _result => foreach (char c in inputString)
    {
        if (c == 122)
            _result += "a";
        else
            _result += Convert.ToChar(c+1);
    }return _result;

https://www.codeproject.com/Tips/298963/Understand-Lambda-Expressions-in-Minutes

If these are two distinct (reference) types then you can test them using the is or as keywords:

i => {
         var x = i as TypeThatHasNameProperty;
         return (x != null) ? x.name : i.inner.name;
     }

If you can't test for specific types then you can use reflection to test for the name property itself:

i => {
         var pi = i.GetType().GetProperty("name");
         return (pi != null) ? pi.GetValue(i, null) : i.inner.name;
     }

If you want to check if any car does not have a door then simply use Enumerable.Any - it determines whether any element of a sequence satisfies a condition:

if (cars.Any(c => c.door == null))
   // then ...

Just for fun: you should execute lambda to get boolean result in if condition (but for this case use Any)

Func<bool> anyCarDoesNotHaveDoor = () => { 
    foreach(var car in cars)
       if (car.door == null)
           return true;
    return false; 
};

if (anyCarDoesNotHaveDoor())
   // then ...

I introduced local variable to make things more clear. But of course you can make this puzzle more complicated

 if (new Func<bool>(() => { 
        foreach(var car in cars)
           if (car.door == null)
               return true;
        return false; })())
    // then ...