cppreference std string substr - PrivacyWall

https://en.cppreference.com/w/cpp/string/basic_string/substr

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std::basic_string<CharT,Traits,Allocator>:: substr - Reference

Returns a substring [pos,pos + count). If the requested substring extends past the end of the string, i.e. the count is greater than size()- pos (e.g. if count == npos), the returned substring is [pos,size ()). 1) Equivalent to return basic_string(*this, pos, count);. 2) Equivalent to return basic_string(std::move(*this), pos, count);.

https://cplusplus.com/reference/string/string/substr/

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Returns a newly constructed string object with its value initialized to a copy of a substring of this object. The substring is the portion of the object that starts at character position pos and spans len characters (or until the end of the string, whichever comes first). Position of the first character to be copied as a substring.

https://stackoverflow.com/questions/46032307/how-to-efficiently-g...

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How to efficiently get a `string_view` for a substring of `std::string`

In which case the std::string_view::substr() method breaks its own rules, since it returns a string_view. So I guess the advice would be never to do this. Use a std::string. You can use the conversion operator from std::string to std::string_view: std::string s = "hello world!";

http://naipc.uchicago.edu/2014/ref/cppreference/en/cpp/string/bas...

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std::basic_string::substr - cppreference.com - University of Chicago

Returns a substring [pos, pos+count). If the requested substring extends past the end of the string, or if count == npos, the returned substring is [pos, size()). String containing the substring [pos, pos+count). std::out_of_range if pos > size() Linear in count.

https://tcs.rwth-aachen.de/docs/cpp/reference/en.cppreference.com...

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std::basic_string<CharT,Traits,Allocator>:: substr - RWTH Aachen University

Returns a substring [pos, pos+count). If the requested substring extends past the end of the string, i.e. the count is greater than size() - pos (e.g. if count == npos), the returned substring is [pos, size()). String containing the substring [pos, pos+count) or [pos, size()). std::out_of_range if pos > size() Linear in count.

https://cpp-lang.net/docs/std/containers/strings/string/substr/

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string<...>::substr () method | C++ Programming Language

String containing the substring [ pos, pos + count ) or [ pos, size () ). Linear in count - O (count). Throws std::out_of_range if pos > size().

https://en.cppreference.com/w/cpp/string/basic_string

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std::basic_string - cppreference.com

std::basic_string satisfies the requirements of AllocatorAwareContainer (except that customized construct / destroy are not used for construction/destruction of elements), SequenceContainer and ContiguousContainer(since C++17). If any of Traits::char_type and Allocator::value_type is different from CharT, the program is ill-formed.

https://cppreference-45864d.gitlab-pages.liu.se/en/cpp/string/bas...

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std::basic_string<CharT,Traits,Allocator>:: substr

If the requested substring extends past the end of the string, i.e. the count is greater than size ( ) - pos (e.g. if count == npos ), the returned substring is . pos . size() 1) Equivalent to return basic_string ( * this, pos, count ) ; . 2) Equivalent to return basic_string ( std :: move ( * this ) , pos, count ) ; . pos + count . or . pos .

https://cplusplus.com/reference/string/string/

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string - C++ Users

Strings are objects that represent sequences of characters. The standard string class provides support for such objects with an interface similar to that of a standard container of bytes, but adding features specifically designed to operate with strings of single-byte characters.

https://my.eng.utah.edu/~pajensen/ACM/Documentation/c-reference/e...

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std::basic_string::substr - cppreference.com

Returns a substring [pos, pos+count). If the requested substring lasts past the end of the string, or if count == npos, the returned substring is [pos, size ()). String containing the substring [pos, pos+count). std::out_of_range if pos > size(). Linear in count. Output:

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