Language

language More...

Collaboration diagram for Language:

Modules
	Folding
	fold
	Qualified nested namespace
	namespace
	Structured bindings
	New attributes
	fallthrough, nodiscard, maybe_unused

Functions
void	references_17 ()
void	conditional_with_init ()
constexpr int	const_if ()
	if More...
void	types_17 ()

Variables
static char	char_u8 = u8'x'
	character_literal More...

Detailed Description

language

Function Documentation

conditional_with_init()

void conditional_with_init

(

)

Variable declaration in conditionals

Specs: if, switch

Definition at line 353 of file 17.cpp.

{
    if (auto a = true) {
    };
 
    switch (int a = 10) {
    }
}

const_if()

constexpr int const_if ( )

constexpr

if

Definition at line 396 of file 17.cpp.

{
    if constexpr(true)
        return 1;
}

references_17()

void references_17

(

)

Definition at line 256 of file 17.cpp.

{
    static_assert(is_reference_v<int&>);
 
    // L-value:
    static_assert(is_lvalue_reference_v<int&>);
 
    // R-value
    static_assert(is_rvalue_reference_v<int&&>);
}

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types_17()

void types_17

(

)

Direct list initialization of enums

floating_literal

invoke

Definition at line 420 of file 17.cpp.

{
    enum byte_e : unsigned char {};
    static byte_e b { 123 };
 
floating_literal:
    static_assert(is_integral_v<int>);
    static_assert(__cpp_hex_float);
    double hex_double = 0x1.2p3;
    assert(hex_double == 9.0);
 
    static_assert(is_invocable<decltype(types_17)>::value);
    static_assert(is_invocable<int()>::value);
    static_assert(is_invocable_r<int, int()>::value);
    static_assert(is_invocable_r<void, void(int), int>::value);
    static_assert(negation_v<bool_constant<false>>);
 
    auto inc = [](int a) -> int { return a + 1; };
    static_assert(is_invocable_r<int, decltype(inc), int>::value);
    static_assert(__cpp_lib_invoke);
    assert(invoke(inc, 2) == 3);
}

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Variable Documentation

char_u8

char char_u8 = u8'x'

static

character_literal

Character literal

Definition at line 410 of file 17.cpp.