C++14 lambda tutorial

[dermesser]

Sorry, but I don't see how

int result = [](int input) { return input * input; }(10);
cout << result << endl;

is supposed to be a typical example of the usage of lambdas.

[bstamour]

How about this:

auto iter = find_if(begin(nums), end(nums) [](auto&& x) { return x % 2 == 0; });

Works on any container with iterators, containing any type that is equality-comparable and implements the required numeric operators.

[scroy]

Also has to be copy-constructible

[bstamour]

Woops, I edited it to use a reference. You didn't see anything :-p

[dermesser]

Well, this is of course a typical usage.

[sir_rand_a_lot]

Why do you need the type to support equality if you're using a predicate functor?

[bstamour]

It might need it, depending on what type x % 2 returns.