std Namespace Reference

STL namespace. More...

Classes
class	allocator
	STL class.
class	array
	STL class.
class	atomic
	STL class.
class	atomic_ref
	STL class.
class	auto_ptr
	STL class.
class	bad_alloc
	STL class.
class	bad_cast
	STL class.
class	bad_exception
	STL class.
class	bad_typeid
	STL class.
class	basic_fstream
	STL class.
class	basic_ifstream
	STL class.
class	basic_ios
	STL class.
class	basic_iostream
	STL class.
class	basic_istream
	STL class.
class	basic_istringstream
	STL class.
class	basic_ofstream
	STL class.
class	basic_ostream
	STL class.
class	basic_ostringstream
	STL class.
class	basic_string
	STL class.
class	basic_string_view
	STL class.
class	basic_stringstream
	STL class.
class	bitset
	STL class.
class	complex
	STL class.
class	deque
	STL class.
class	domain_error
	STL class.
class	error_category
	STL class.
class	error_code
	STL class.
class	error_condition
	STL class.
class	exception
	STL class.
class	forward_list
	STL class.
class	fstream
	STL class.
struct	hash< gtl::IntType< IntTypeName, ValueType > >
struct	hash< operations_research::StrongIndex< Tag > >
struct	hash< operations_research::StrongInt64< Tag > >
struct	hash< util_intops::StrongInt< StrongIntName, ValueType > >
class	ifstream
	STL class.
class	invalid_argument
	STL class.
class	ios
	STL class.
class	ios_base
	STL class.
class	istream
	STL class.
class	istringstream
	STL class.
class	jthread
	STL class.
class	length_error
	STL class.
class	list
	STL class.
class	lock_guard
	STL class.
class	logic_error
	STL class.
class	map
	STL class.
class	multimap
	STL class.
class	multiset
	STL class.
class	mutex
	STL class.
struct	numeric_limits< operations_research::StrongIndex< Tag > >
struct	numeric_limits< operations_research::StrongInt64< Tag > >
class	ofstream
	STL class.
class	ostream
	STL class.
class	ostringstream
	STL class.
class	out_of_range
	STL class.
class	overflow_error
	STL class.
class	pair
	STL class.
class	priority_queue
	STL class.
class	queue
	STL class.
class	range_error
	STL class.
class	recursive_mutex
	STL class.
class	recursive_timed_mutex
	STL class.
class	runtime_error
	STL class.
class	set
	STL class.
class	shared_lock
	STL class.
class	shared_mutex
	STL class.
class	shared_ptr
	STL class.
class	shared_timed_mutex
	STL class.
class	smart_ptr
	STL class.
class	span
	STL class.
class	stack
	STL class.
class	string
	STL class.
class	string_view
	STL class.
class	stringstream
	STL class.
class	system_error
	STL class.
class	thread
	STL class.
class	timed_mutex
	STL class.
class	u16string
	STL class.
class	u16string_view
	STL class.
class	u32string
	STL class.
class	u32string_view
	STL class.
class	u8string
	STL class.
class	u8string_view
	STL class.
class	underflow_error
	STL class.
class	unique_lock
	STL class.
class	unique_ptr
	STL class.
class	unordered_map
	STL class.
class	unordered_multimap
	STL class.
class	unordered_multiset
	STL class.
class	unordered_set
	STL class.
class	valarray
	STL class.
class	vector
	STL class.
class	weak_ptr
	STL class.
class	wfstream
	STL class.
class	wifstream
	STL class.
class	wios
	STL class.
class	wistream
	STL class.
class	wistringstream
	STL class.
class	wofstream
	STL class.
class	wostream
	STL class.
class	wostringstream
	STL class.
class	wstring
	STL class.
class	wstring_view
	STL class.
class	wstringstream
	STL class.

Detailed Description

STL namespace.

– STD NUMERIC_LIMITS SUPPORT -------------------------------------------—

– STD HASHING SUPPORT --------------------------------------------------—

Allows it to be used as a key to hashable containers.

Note

this is technically undefined behavior! We are adding things into the std namespace for a reason though – we are providing new operations on types which are themselves defined with this namespace. Without this, these operator overloads cannot be found via ADL. If these definitions are not found via ADL, they must be #included before they're used, which requires this header to be included before apparently independent other headers.

For example, base/logging.h defines various template functions to implement CHECK_EQ(x, y) and stream x and y into the log in the event the check fails. It does so via the function template MakeCheckOpValueString: template<class T> void MakeCheckOpValueString(strstream* ss, const T& v) { (*ss) << v; } Because 'logging.h' is included before 'stl_logging.h', subsequent CHECK_EQ(v1, v2) for vector<...> typed variable v1 and v2 can only find these operator definitions via ADL.

Even this solution has problems – it may pull unintended operators into the namespace as well, allowing them to also be found via ADL, and creating code that only works with a particular order of includes. Long term, we need to move all of the definitions into namespace std, bet we need to ensure no one references them first. This lets us take that step. We cannot define them in both because that would create ambiguous overloads when both are found.