Understanding the Need for Variadic Templates
Explore the importance of variadic templates in C++, focusing on how they improve flexibility, safety, and efficiency by enabling type-safe, compile-time handling of functions and classes with variable numbers of arguments. Understand their advantages over traditional variadic functions and their applications in modern C++ programming.
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Functions with variable numbers of arguments
One of the most famous C and C++ functions is printf, which writes formatted output to the stdout standard output stream. There is actually a family of functions in the I/O library for writing formatted output, which also includes fprintf (which writes to a file stream), sprint, and snprintf (which write to a character buffer). These functions are similar because they take a string defining the output format and a variable number of arguments. The language, however, provides us with the means to write our own functions with variable numbers ...