Lambda

Collaboration diagram for Lambda:

Functions
static void	lambda_14 ()
void	sort_14 ()
	Compare with lambda::sort_11. More...

Detailed Description

https://en.cppreference.com/w/cpp/language/lambda

Function Documentation

lambda_14()

static void lambda_14 ( )

static

Definition at line 163 of file 14.cpp.

{
    // Generic lambdas
    // auto before_generic_lambda = [](int x) { return x; };
    static_assert(__cpp_generic_lambdas);
    auto generic_lambda = [](auto x) { return x; };
 
    auto universal_size = [](const auto& m) { return m.size(); };
 
    static_assert(__cpp_init_captures);
    auto capture_initializers = [value = 1] { return value; };
 
    assert(capture_initializers() == 1);
 
    auto mutable_lambda = [value = 1] () mutable { return ++value; };
 
    assert(mutable_lambda() == 2);
    assert(mutable_lambda() == 3);
 
    // capture initialization can change context
    int c = 0;
    auto change_c = [value = ++c] { };
    assert(c == 1);
 
    unique_ptr<int> ptr(new int(10));
    auto capture_by_move = [value = move(ptr)] { return *value; };
}

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sort_14()

void sort_14

(

)

Compare with lambda::sort_11.

Definition at line 193 of file 14.cpp.

{
    array<int, 10> s = {5, 7, 4, 2, 8, 6, 1, 9, 0, 3};
    sort(s.begin(), s.end(),
          // sort using a generic lambda expression
          [](auto a, auto b)
          { return a > b; }
         );
}

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