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deepmind.google·6d ago
AI Engineering
Lobsters·Jun 21·5 min read
Improvements to std::format in C++26
TL;DR
Before C++26, printing an empty line required a workaround, and formatting pointer types involved converting them to integers. C++26 introduces std::println, which can print an empty line directly, and enhances the format library to support direct formatting of pointer types.
✦ Why It Matters
Engineers can now write cleaner code with simpler output formatting for empty lines and pointer types.
Key Takeaways
- Use std::println for empty lines in C++26.
- Directly format pointer types without hacks.
- Improve code readability with new formatting features.
- Reduce errors in output formatting with C++26 enhancements.
Full Summary
Prior to C++26, developers faced challenges when printing an empty line, as they had to use a workaround involving additional code. Additionally, formatting pointer types was cumbersome, requiring the reinterpretation of pointers as integers to display their values.
C++26 addresses these issues by introducing std::println, which includes an overload that allows for printing an empty line without parameters. Furthermore, the format library now directly supports formatting pointer types, eliminating the need for previous hacks.
These enhancements streamline the coding process, making it easier for developers to produce clean and readable output. The improvements reflect a focus on usability and efficiency in the C++ programming language.
Overall, these changes are expected to enhance developer productivity and reduce the likelihood of errors in output formatting.