2024年5月16日 · Capturing the result of std::clamp by reference produces a dangling reference if one of the parameters is a temporary and that parameter is returned: int n = - 1 ; const int & r = std :: clamp ( n, 0 , 255 ) ; // r is dangling

2024年5月17日 · clamp (const T & v, const T & lo, const T & hi, Comp comp = {}, Proj proj = {}); (since C++20) If the value of v is within [ lo , hi ] , returns v ; otherwise returns the nearest boundary.

2023年10月2日 · The result of element-wise application of std:: clamp (v [i], lo [i], hi [i]) for all i ∈ [ 0 , size ()). Example

2023年12月18日 · Retrieved from "https://en.cppreference.com/mwiki/index.php?title=cpp/utility/in_range&oldid=166104"

2024年8月17日 · Converts the value x to a value of type T, clamping x between the minimum and maximum values of type T.. The program is ill-formed if either T or U is not a signed or unsigned integer type (including standard integer type and extended integer type).

2024年12月5日 · a, b - the values to compare ilist - initializer list with the values to compare cmp - comparison function object (i.e. an object that satisfies the requirements of Compare) which returns true if a is less than b.. The signature of the comparison function should be …

2024年10月26日 · Notes. The parallelizable version of this algorithm, std::transform_reduce, requires op1 and op2 to be commutative and associative, but std::inner_product makes no such requirement, and always performs the operations in the order given. [] Exampl

2023年8月28日 · Notes. In practice, implementations of ranges::copy avoid multiple assignments and use bulk copy functions such as std::memmove if the value type is TriviallyCopyable and the iterator types satisfy contiguous_iterator.. When copying overlapping ranges, ranges::copy is appropriate when copying to the left (beginning of the destination range is outside the source …

2023年4月17日 · Sorts the elements in the range [first, last) in non-descending order. The order of equivalent elements is not guaranteed to be preserved. A sequence is sorted with respect to a comparator comp if for any iterator it pointing to the sequence and any non-negative integer n such that it + n is a valid iterator pointing to an element of the sequence, std:: invoke (comp, …

2023年12月17日 · The function-like entities described on this page are algorithm function objects (informally known as niebloids), that is: . Explicit template argument lists cannot be specified when calling any of them. None of them are visible to argument-dependent lookup.; When any of them are found by normal unqualified lookup as the name to the left of the function-call operator, …