AtMostOnce< T > Class Template Reference

#include <IoManip.h>

Collaboration diagram for AtMostOnce< T >:

Public Member Functions
	AtMostOnce (const T &t)
	caller must ensure t lifetime extends to the last use of this AtMostOnce instance More...
void	print (std::ostream &os)

Private Attributes
const T &	toPrint
bool	printed = false

Detailed Description

template<class T>
class AtMostOnce< T >

Helps print T object at most once per AtMostOnce<T> object lifetime. T objects are printed to std::ostream using operator "<<".

auto headerOnce = AtMostOnce("Transaction Details:\n");
if (detailOne)
    os << headerOnce << *detailOne;
if (const auto detailTwo = findAnotherDetail())
    os << headerOnce << *detailTwo;

Definition at line 259 of file IoManip.h.

Constructor & Destructor Documentation

AtMostOnce()

template<class T >

AtMostOnce< T >::AtMostOnce ( const T &  t )

inlineexplicit

Definition at line 263 of file IoManip.h.

Member Function Documentation

print()

template<class T >

void AtMostOnce< T >::print ( std::ostream &  os )

inline

Definition at line 265 of file IoManip.h.

References AtMostOnce< T >::printed, and AtMostOnce< T >::toPrint.

Referenced by operator<<().

Member Data Documentation

printed

template<class T >

bool AtMostOnce< T >::printed = false

private

Definition at line 274 of file IoManip.h.

Referenced by AtMostOnce< T >::print().

toPrint

template<class T >

const T& AtMostOnce< T >::toPrint

private

Definition at line 273 of file IoManip.h.

Referenced by AtMostOnce< T >::print().

---

The documentation for this class was generated from the following file:

• src/base/IoManip.h