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update example

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This commit is contained in:
neargye 2020-08-17 01:28:35 +05:00
parent e55d4cea83
commit 8fd0ddb13c
2 changed files with 15 additions and 15 deletions
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26
example/enum_flag_example.cpp
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@ -28,12 +28,12 @@
enum class AnimalFlags : std::uint64_t { HasClaws = 1 << 10, CanFly = 1 << 20, EatsFish = 1 << 30, Endangered = std::uint64_t{1} << 40 };
int main() {
// Enum variable to string name.
// Enum-flags variable to string name.
AnimalFlags f1 = AnimalFlags::Endangered;
auto f1_name = magic_enum::flags::enum_name(f1);
std::cout << f1_name << std::endl; // Endangered
// String enum name sequence.
// String enum-flags name sequence.
constexpr auto& names = magic_enum::flags::enum_names<AnimalFlags>();
std::cout << "AnimalFlags names:";
for (const auto& n : names) {
@ -42,47 +42,47 @@ int main() {
std::cout << std::endl;
// AnimalFlags names: HasClaws CanFly EatsFish Endangered
// String name to enum value.
// String name to enum-flags value.
auto f2 = magic_enum::flags::enum_cast<AnimalFlags>("EatsFish|CanFly");
if (f2.has_value()) {
std::cout << "EatsFish = " << magic_enum::flags::enum_integer(f2.value()) << std::endl; // CanFly|EatsFish = 1074790400
}
// Integer value to enum value.
// Integer value to enum-flags value.
auto f3 = magic_enum::flags::enum_cast<AnimalFlags>(1073742848);
if (f3.has_value()) {
std::cout << magic_enum::flags::enum_name(f3.value()) << " = " << magic_enum::flags::enum_integer(f3.value()) << std::endl; // HasClaws|EatsFish = 1073742848
}
// Enum value to integer value.
// Enum-flags value to integer value.
auto f4_integer = magic_enum::flags::enum_integer(AnimalFlags::HasClaws);
std::cout << "HasClaws = " << f4_integer << std::endl; // HasClaws = 1024
using namespace magic_enum::flags::ostream_operators; // out-of-the-box ostream operator for all enums.
// ostream operator for enum.
using namespace magic_enum::flags::ostream_operators; // out-of-the-box ostream operator for enum-flags.
// Ostream operator for enum-flags.
std::cout << f1 << " " << f2 << " " << f3 << std::endl; // Endangered CanFly|EatsFish HasClaws|EatsFish
// Number of enum values.
// Number of enum-flags values.
std::cout << "AnimalFlags enum size: " << magic_enum::flags::enum_count<AnimalFlags>() << std::endl; // AnimalFlags enum size: 4
// Indexed access to enum value.
// Indexed access to enum-flags value.
std::cout << "AnimalFlags[0] = " << magic_enum::flags::enum_value<AnimalFlags>(0) << std::endl; // AnimalFlags[0] = HasClaws
// Enum value sequence.
// Enum-flags value sequence.
constexpr auto& values = magic_enum::flags::enum_values<AnimalFlags>();
std::cout << "AnimalFlags values:";
for (const auto& f : values) {
std::cout << " " << f; // ostream operator for enum.
std::cout << " " << f; // Ostream operator for enum-flags.
}
std::cout << std::endl;
// AnimalFlags sequence: HasClaws CanFly EatsFish Endangered
using namespace magic_enum::flags::bitwise_operators; // out-of-the-box bitwise operators for all enums.
using namespace magic_enum::bitwise_operators; // out-of-the-box bitwise operators for all enums.
// Support operators: ~, |, &, ^, |=, &=, ^=.
AnimalFlags flag = AnimalFlags::HasClaws | AnimalFlags::CanFly;
std::cout << flag << std::endl; // HasClaws|CanFly
// Enum pair (value enum, string enum name) sequence.
// Enum-flags pair (value, string name) sequence.
constexpr auto& entries = magic_enum::flags::enum_entries<AnimalFlags>();
std::cout << "AnimalFlags entries:";
for (const auto& e : entries) {

4
example/example.cpp
View file

@ -64,7 +64,7 @@ int main() {
std::cout << "RED = " << c4_integer << std::endl; // RED = -10
using namespace magic_enum::ostream_operators; // out-of-the-box ostream operator for all enums.
// ostream operator for enum.
// Ostream operator for enum.
std::cout << "Color: " << c1 << " " << c2 << " " << c3 << std::endl; // Color: RED BLUE GREEN
// Number of enum values.
@ -77,7 +77,7 @@ int main() {
constexpr auto& values = magic_enum::enum_values<Color>();
std::cout << "Colors values:";
for (const auto& c : values) {
std::cout << " " << c; // ostream operator for enum.
std::cout << " " << c; // Ostream operator for enum.
}
std::cout << std::endl;
// Color sequence: RED BLUE GREEN