Embracing User Defined Literals Safely for Types that Behave as though Built-in - Pablo Halpern

Discover the power of user-defined literals in C++20, learn how to create custom syntax for values, and explore the benefits of simplifying code and improving readability.

Key takeaways

What are user-defined literals and why do we have them?
User-defined literals are placeholders for values that can be evaluated at compile-time.
They are used to create custom syntax for values, such as IP addresses or dates.
UDLs have to be deducible, and the compiler will throw an error if it can’t determine the type of the literal.
UDLs can be overloaded to handle different types of literals.
Using UDLs can simplify code and make it more readable.
UDLs can be used to create custom syntax for complex data types, such as dates and times.
UDLs can also be used to create custom syntax for numerical types, such as floating-point numbers.
In C++20, UDLs can be used to create custom syntax for non-numeric types, such as strings.
UDLs can be used to create custom syntax for user-defined types, such as structs and classes.
UDLs can be used to create custom syntax for custom operators, such as the ++ operator.
UDLs can be used to create custom syntax for custom syntax, such as the # operator.
UDLs can be used to create custom syntax for custom syntax, such as the ## operator.
UDLs can be used to create custom syntax for custom syntax, such as the ### operator.
UDLs can be used to create custom syntax for custom syntax, such as the #### operator.

Embracing User Defined Literals Safely for Types that Behave as though Built-in - Pablo Halpern

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