31 Regular expressions library [re]

31.10 Class template match_­results [re.results]

31.10.1 match_­results constructors [re.results.const]

In all match_­results constructors, a copy of the Allocator argument shall be used for any memory allocation performed by the constructor or member functions during the lifetime of the object.
match_results(const Allocator& a = Allocator());
Effects: Constructs an object of class match_­results.
Postconditions: ready() returns false.
size() returns 0.
match_results(const match_results& m);
Effects: Constructs an object of class match_­results, as a copy of m.
match_results(match_results&& m) noexcept;
Effects:  Move constructs an object of class match_­results from m satisfying the same postconditions as Table 134.
Additionally, the stored Allocator value is move constructed from m.get_­allocator().
Throws: Nothing.
match_results& operator=(const match_results& m);
Effects: Assigns m to *this.
The postconditions of this function are indicated in Table 134.
match_results& operator=(match_results&& m);
Effects:  Move-assigns m to *this.
The postconditions of this function are indicated in Table 134.
Table 134match_­results assignment operator effects
Element
Value
ready()
m.ready()
size()
m.size()
str(n)
m.str(n) for all integers n < m.size()
prefix()
m.prefix()
suffix()
m.suffix()
(*this)[n]
m[n] for all integers n < m.size()
length(n)
m.length(n) for all integers n < m.size()
position(n)
m.position(n) for all integers n < m.size()