C++ (Cpp) CONTAINER::push_back Examples

Programming Language: C++ (Cpp)

Class/Type: CONTAINER

Method/Function: push_back

Examples at hotexamples.com: 5

The push_back() function is used to add elements to a container (such as a vector or a list) from the back end. It is a member function of several container classes in the C++ Standard Library.

Example 1: Using the push_back() function with a vector.

#include 
#include 

int main() {
   std::vector v{1, 2, 3};

   v.push_back(4);
   v.push_back(5);

   for(auto num : v) {
      std::cout << num << " ";
   }

   return 0;
}

// Output: 1 2 3 4 5

In this example, we first initialize a vector v with the elements {1, 2, 3}. We then use the push_back() function twice to add the integers 4 and 5 to the back of the vector. Finally, we use a range-based for loop to iterate over the vector and print its elements.

Package Library: STL (Standard Template Library)

Example 2: Using the push_back() function with a list.

#include 
#include 

int main() {
   std::list l{1, 2, 3};

   l.push_back(4);
   l.push_back(5);

   for(auto num : l) {
      std::cout << num << " ";
   }

   return 0;
}

// Output: 1 2 3 4 5

In this example, we first initialize a list l with the elements {1, 2, 3}. We then use the push_back() function twice to add the integers 4 and 5 to the back of the list. Finally, we use a range-based for loop to iterate over the list and print its elements. Package Library: STL (Standard Template Library) Both examples use the standard template library of C++.

C++ (Cpp) CONTAINER::push_back - 5 examples found. These are the top rated real world C++ (Cpp) examples of CONTAINER::push_back extracted from open source projects. You can rate examples to help us improve the quality of examples.

Frequently Used Methods

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end(24)

begin(22)

push_back(5)

size(5)

unbind(4)

clear(3)

current_size(3)

erase(3)

find(2)

insert(2)

emplace_back(1)

Example #1

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File: sequential_test.cpp Project: staticimport/perftest

void test<CONTAINER,HANDLER>::insert(unsigned count, bool warm, bool write)
{
  CONTAINER container;
  if (warm) {
    container.push_back(0); container.push_back(0);
    typename CONTAINER::iterator iter = ++container.begin();
    for(unsigned ii = 0; ii != count; ++ii) {
      iter = _handler.insert(container, iter, 1);
      if (ii & 1) ++iter;
    }
    container.clear();
  }
  container.push_back(0); container.push_back(0);
  boost::timer::cpu_timer timer;
  timer.start();
  typename CONTAINER::iterator iter = ++container.begin();
  for(unsigned ii = 0; ii != count; ++ii) {
    iter = _handler.insert(container, iter, 1);
    if (ii & 1) ++iter;
  }
  timer.stop();
  if (write) {
    dump(timer, "middle insert", count, warm);
  }
}

Example #2

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File: sequential_test.cpp Project: staticimport/perftest

void test<CONTAINER,HANDLER>::iterate(unsigned count, bool warm, bool write)
{
  CONTAINER container;
  unsigned unused = 0;
  for(unsigned ii = 0; ii != count; ++ii)
    container.push_back(ii);
  if (warm) {
    for(typename CONTAINER::const_iterator iter = container.begin();
        iter != container.end();
        ++iter)
    {
      unused += *iter;
    }
  }
  boost::timer::cpu_timer timer;
  timer.start();
  for(typename CONTAINER::const_iterator iter = container.begin();
      iter != container.end();
      ++iter)
  {
    unused += *iter;
  }
  timer.stop();
  if (unused == 1234) { // won't happen
    std::cout << "YEAH RIGHT!";
  }
  if (write) {
    dump(timer, "iterate", count, warm);
  }
}

Example #3

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File: BratSettings.cpp Project: BRAT-DEV/main

bool CBratSettings::LoadRecentFilesGeneric( CONTAINER &paths )
{
	long maxEntries = 0;

	{
		CSection section( mSettings, GROUP_WKS_RECENT );
		auto const &keys = mSettings.childKeys();
        maxEntries = keys.size();
		for ( auto const &key : keys )
		{
			auto value = ReadValue< typename CONTAINER::value_type >( section, q2t< std::string >( key ) );
			paths.push_back( value );
		};
	}

	assert__( paths.size() == maxEntries );			Q_UNUSED( maxEntries );		//for release builds

	return mSettings.status() == QSettings::NoError;
}

Example #4

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File: map_descriptor.hpp Project: jmichael218/laurena

 virtual void push(any& container, any& element) const
 {
     CONTAINER* c = anycast<CONTAINER*>(container);
     c->push_back(anycast<ELEMENT>(element));
     
 }

Example #5

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File: mcmc.tracked.hpp Project: shenglin1987/CppBugs

 void track() { history.push_back(value_); }