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New Features of C++17
C++17 is the latest version of standard C++ language. C++11 and C++14 are the previous versions of C++. The current version makes several additions to the core language while some previous features are also removed. C++17 is known as feature full or feature complete.
There are some of the new changes introduced in C++17 −
Library changes - utils
This is one of the most amazing feature of C++17. It merges the features and patterns of other libraries. Many of the sub-libraries are merged together into standards.
The following features are added to utils library in C++17 −
- std::variant
- std::search
- std::string_view
- std::optional
- std::any
Library changes - Filesystem
The previous standard libraries lacked some key features. C++ committee boosted up the libraries and merged many systems into standard.
The following features are added to Filesystem in C++17 −
- Working with path object
- Compiler/ Library support
- Traversing a path
Library Changes - Parallel Algorithm
It appends some new features to previous features of C++11 and C++ 17. It unlocked the auto parallelization or auto vectorization feature for standard library.
The following features are added to Parallel algorithms in C++17 −
- Algorithm update
- Execution polices
- New algorithms
Attributes
C++17 has added three new attributes, such as [[maybe_unused]], [[fallthrough]] and [[nodiscard]].
Simplification
There are several features to simplify the code in previous versions of C++. C++17 has added this feature in the following features for the simplification of code −
- Init statement for if/ switch
- Inline variables
- Structured binding declarations
Searchers
C++17 improved the old searchers in previous versions of C++ language. boyer_moore_horspool_searcher, default_searcher and boyer_moore_searcher are the new searchers in C++17.
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