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

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

abcdefghij 567 hij basic_string::substr: __pos (which is 23) > this->size() (which is 20) [ edit ] Defect reports The following behavior-changing defect reports were applied retroactively to previously published C++ standards.

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() ) . Contents

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

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Number of characters to include in the substring (if the string is shorter, as many characters as possible are used). A value of string::npos indicates all characters until the end of the string. size_t is an unsigned integral type (the same as member type string::size_type). Return Value A string object with a substring of this object. Example

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`

std::string_view(s).substr(6, 5); std::string_view(s.data()+6, 5); // or even "worse": std::string_view(s).remove_prefix(6).remove_suffix(1); Frankly, I don't think any of these are very nice. Right now the best thing I can think of is using aliases to simply make things less verbose. using sv = std::string_view; sv(s).substr(6, 5);

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

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std::basic_string::substr - cppreference.com

operator== operator!= operator< operator> operator<= operator>= swap (std::basic_string): operator<< operator>>

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

The returned string is constructed as if by basic_string (data + pos, count), which implies that the returned string's allocator will be default-constructed — the new allocator might not be a copy of this->get_allocator().

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

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std::basic_string - cppreference.com

The class template basic_string stores and manipulates sequences of character-like objects, which are non-array objects of TrivialType and StandardLayoutType.The class is dependent neither on the character type nor on the nature of operations on that type. The definitions of the operations are supplied via the Traits template parameter - a specialization of std::char_traits or a compatible ...

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

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

If the requested substring extends past the end of the string, i.e. count is greater than size() - pos (e.g. if count == npos), the returned substring is [ pos, size() ). Parameters pos - position of the first character to include; count - length of the substring; Return value String containing the substring [ pos, pos + count ) or [ pos, size() ).

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. The string class is an instantiation of the basic_string class template that uses char (i.e., bytes) as its ...

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

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

abcdefghij 567 hij basic_string::substr: __pos (which is 23) > this->size() (which is 20) Defect reports The following behavior-changing defect reports were applied retroactively to previously published C++ standards.

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