Today, I want to present the five winners for the pdf of the book "C++20 STL Cookbook" by Bill Weinman.
To get the book, you had to answer the following question by Bill Weinmann: "What are the major advantages of the C++20 format library over printf and iostream?". Here are the best five answers. Two answers were almost literally identical, but I had to decide for one of them.
1. Format () is clean, precise , flexible variadic template function in terms of its usage and code readability.
2. With iostream we use for example: std::cout, std::cin . This use of scope resolution (namespaces) and insertion / extraction operations is overcome with help of format function , improving performance and efficiency.
3. format() function provides type safety ,
Formatting options, supporting classes and objects , positional arguments.
- not Type safe
- it is not extensible because it only supports a specific number of types.
- Type safe
- now extensible ( yay :D )
- easier to localize/translate
my answer is that the C++20 format library provides a rich set of formatting options that exceeds even that of prinf. It provides a positional arguments and is extensible to support more values and classes. It is like it was isnpired by Python str.format method.
the C++20 format() function is a variadic template function which provides type safety, along with the performance and efficiency advantages of iostream. the format library also provides vformat(), a type-erased interface that prevents generating multiple instances of complex template function for each combination of arguments.
the make_formate_arge() function creates a type-erased parameter stack to pass to vformat(), which does the heavy lifting of formatting the string. This is how the format() library operates so efficiently.
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Thanks in particular to Jon Hess, Lakshman, Christian Wittenhorst, Sherhy Pyton, Dendi Suhubdy, Sudhakar Belagurusamy, Richard Sargeant, Rusty Fleming, Ralf Abramowitsch, John Nebel, Mipko, and Alicja Kaminska.
My special thanks to Embarcadero
My special thanks to PVS-Studio
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Standard Seminars (English/German)
Here is a compilation of my standard seminars. These seminars are only meant to give you a first orientation.