C++ Features You Might Not Know - Jonathan Müller - NDC TechTown 2023

C++ Features You Might Not Know

• You can use a lambda that doesn’t capture anything implicitly convertible to a function pointer.
• The comma operator is useful for combining expressions.
• You can overload the comma operator for your iterator.
• A union of two UN32s with padding between the UN8s.
• The sign bit is set in Intel CPUs when you create a nan out of an operation.
• The static keyword has multiple meanings.
• The size of operator is useful for getting the size of an array.
• You can use constexpr to create a constexpr lambda.
• The short circuit behavior of logical operators can be useful.
• You can use dynamic casts to get around covariant return types.
• The standard library has some weird stuff, such as macros that define rounding modes.
• You can use valarray to create an array of values.
• The SIMD type is an array of values.
• You can use lambdas with captures to create function pointers.
• You can overload the -> operator to dereference a pointer to object.
• You can use implicit conversions to get a function pointer from a lambda.
• The std::runtime_error exception has a what() function that returns a std::string.
• You can use auto to deduce the type of a variable.
• The (round()) macro in C++ is used to round numbers.
• You can use the std::valarray class to create an array of values.
• The ssize_t type is an alias for int in some systems.
• You can use the VS.yml file to configure Valgrind.
• The clang compiler tells you if you have undefined behavior.
• The sscanf function is used to read from a string.
• The VA_ARGS macro is used to pass arguments to a function.
• You can use the std::cout object to print to the console.
• You can use the macro to print to the console with automatic formatting.
• The std::cout object has an operator void() function.
• The VA_ARGS macro is used to pass arguments to a function.
• You can use the std::cout object to print to the console with automatic formatting.
• The std::cout object has an operator void() function.
• The std::cout object can be used to print to the console with automatic formatting.