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Questions tagged [fundamentals-ts]

The C++ Technical Specification "Library Fundamentals"

C++ is standardized in an ISO International Standard (IS). In addition to the IS, ISO also publishes a series of Techinical Specifications (TS) on specific domains.

The Library Fundamentals TS contains additions and evolution of general-purpose, core library components (such as string_view, optional, any).

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What is string_view?

string_view was a proposed feature within the C++ Library Fundamentals TS(N3921) added to C++17 As far as i understand it is a type that represent some kind of string "concept" that is a view of any type of container that could store something…
Drax
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string_view behaviour when passing temporary std::string

I just ran into some misunderstanding: at least in libc++ implementation std::experimental::string_view has the following concise implementation: template class basic_string_view { public: typedef _CharT…
Bikineev
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How could std::experimental::source_location be implemented?

C++ Extensions for Library Fundamentals, Version 2 (N4564) introduces the type std::experimental::source_location. § 14.1.2 [reflection.src_loc.creation] says: static constexpr source_location current() noexcept; Returns: When invoked by a…
5gon12eder
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Detect operator++ signature with std::is_detected_exact

I want to detect at compile time if a given type has the pre-increment operator with the library fundamentals TS v2 type_traits' is_detected_exact helper - however, it seems like I either misunderstood this helper or I supplied the wrong parameters,…
Christian G
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Stuck with Matrix addition in python

Please look at my code for matrix addition in python and help me to resolve the issue. Code: def matrix_addition(a, b): # your code here res = [] for i in range(len(a)): for j in range(len(b)): sum = a[i][j] + b[i][j] …
pankaj kumar
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C++ Rock Paper Scissors

I`m trying to make Rock Paper Scissors game in c++.I tested my code on codecademy.com And It worked Properly but when I execute it on codewars.com It gives me this error : main.cpp:29:1: warning: control may reach end of non-void function…
Poorya Keshavarzi
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No operator "*" matches these operands

this is my code glm::vec3 v(4, -6, 7); glm::vec3 twiceV = 2 * v; I have included glm Stable and experimental glm extensions. Why I cannot use int * vec?
Morovo
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how i can find problem in selection sort scenario code in java

this one is given ion exercise : For consistency in which version of Selection Sort is implemented: Stop the sort once the unsorted area is only one element. Don't swap if the minimum element is the first element in the unsorted area (so no printout…
Muhammad Adeel Qureshi
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C# form switch and vice versa

Assume that I have a C# Solution with 3 projects Main, Program1, Program2. I want to have a "Main form", when I click on button "Program1" the main form will be hidden, Program1 will be showed, and when I close Program1, the Main form will…
Luke
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Exes and Ohs (C++)

This is what I am asked to do:Check to see if a string has the same amount of 'x's and 'o's. The method must return a boolean and be case insensitive. The string can contain any char. Examples input/output: XO("ooxx") => true XO("xooxx") =>…
Poorya Keshavarzi
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Hi everyone. i would like to write a program which prompt the user to enter five numbers and check conditions

I would like to write a program that prompts the user to enter five numbers and check conditions. If a user enters any number that is not matched with the condition then the user should again get the prompt irrespective of the count (5) then append…
Darrhyl-K
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