性能考量:对于大数据集,优先考虑算法的并行版本(如std::ranges::sort的并行策略)来提升效率。 避免不必要的视图链:复杂的视图链可能会增加编译时间和运行时开销,适时考虑使用中间变量存储结果。 结语 C20的ranges和views功能是现代C编程的一个重要里程碑,它们让代码更加简洁、高效且富有表达力。通过理解其基本概念、注...
4.1.3 使用示例 下面是一个使用ranges::sort对一个std::vector进行排序的示例: #include <vector>#include <iostream>#include <ranges>int main() {std::vector<int> v = {5, 3, 1, 4, 2};std::ranges::sort(v);for (int i : v) {std::cout << i << " ";}return 0;} 输出结果将是:...
std::ranges::sort有两个重载: template<std::random_access_iteratorI,std::
sort( I first, S last, Comp comp = {}, Proj proj = {} ); (1) (since C++20) template< ranges::random_access_range R, class Comp = ranges::less, class Proj = std::identity > requires std::sortable<ranges::iterator_t<R>, Comp, Proj> constexpr ranges::borrowed_iterator_t<R...
){std::vector<int>data={1,9,2,8,3,7};std::ranges::sort(data|std::views::drop(2)|std...
The meaning of RANGE is a series of things in a line : row. How to use range in a sentence. Synonym Discussion of Range.
ranges是C++20的主要特性之一,其中"view"是比较重要的一部分。C++20之前,标准库的算法实现是基于迭代器来实现的,例如:std::sort。 代码语言:javascript 复制 std::sort(v.begin()+2,v.end()) 迭代器 + 算法能够完成一些复杂的操作,例如:我想要倒这排序: ...
c-plus-pluscmakealgorithmsbooststliteratorsradix-sortrangesdynamic-tuple UpdatedAug 25, 2024 C++ Code samples from Teach Yourself C++ In One Hour a Day, Ninth Edition by Siddhartha Rao. Released in 2022 this book uses nearly 300 code samples to explain the most modern C++ language features inclu...
ranges::sort) begin + [0, size) –counted sequences, e.g. range returned by views::counted [begin, predicate) –conditionally-terminated sequences, e.g. range returned by views::take_while [begin, ..) –unbounded sequences, e.g. range returned by views::iota The ranges...
c. Music The gamut of tones that a voice or instrument is capable of producing. Also called compass. d. A class, rank, or order: the lower ranges of society. 2. a. Extent of perception, knowledge, experience, or ability: Calculus is simply out of my range. b. The area or sphere...