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std::sub_match::operator string_type, std::sub_match::str

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< cpp‎ | regex‎ | sub match
Revision as of 11:12, 28 March 2014 by Pchriste (Talk | contribs)

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operator string_type() const;
(1)
string_type str() const;
(2)

Converts to an object of the underlying std::basic_string type.

The first version is an implicit conversion, the second one is explicit.

Contents

[edit] Parameters

(none)

[edit] Return value

Returns the matched character sequence as an object of the underlying std::basic_string type. If the matched member is false then the empty string is returned.

[edit] Complexity

Linear in the length of the underlying character sequence.

[edit] Example

#include <iostream>
#include <regex>
#include <string>
int main()
{
  std::ssub_match sm;
  std::string s = sm;  // implicit conversion
  std::cout << s.length() << '\n';
}

Output:

​0​