Unigine::Set Class

A set is a container template in which each element must be unique as the value of the element identifies it. The values are stored in the ascending order.

To create a new set, you can use the default constructor or one of the following ways:

• Create a new set by using the constructor with an initializer list:
  Source code (C++)

  const Set<int> my_set{ 1, 6, 4, 3, 7 };
  
  // check the result
  for (const auto &it : my_set)
  	Log::message("%d ", it.key);

• Create a new set using a copy constructor:
  Source code (C++)

  // constructor that takes an initializer list
  const Set<String> initial{ "a", "e" };
  // copy constructor
  const Set<String> copied(initial);
  // check the result
  for (const auto &it : copied)
  	Log::message("%s ", it.key.get());

Also you can modify a set by using the append() and insert() class member functions. Check some of the usage examples:

• Create a new set and append elements to it one by one:
  Source code (C++)

  Set<int> my_set;
  
  my_set.append(1);
  my_set.append(10);
  my_set.append(4);
  
  // check the result
  for (const auto &it : my_set)
  	Log::message("%d ", it.key);

• Create a new set and append another set to it:
  Source code (C++)

  // create a set using an initializer list
  const Set<int> my_set_0{ 1, 6, 4, 3, 7 };
  
  // declare a new set
  Set<int> my_set_1;
  // append the "my_set_0" to it
  my_set_1.append(my_set_0);
  
  // check the result
  for (const auto &it : my_set)
  	Log::message("%d ", it.key);

• Modify the existing set that already contains elements:
  Notice

  If an element already exists in the initial set, it will not be added.
  Source code (C++)

  // create sets using initializer lists
  Set<String> initial{ "a", "b", "c", "d", "e" };
  Set<String> to_add{ "m", "n", "o" };
  
  // append keys of the "to_add" set to the "initial" set
  initial.append(to_add);
  // insert a key into the "initial" set
  initial.insert("s");
  
  // check the result
  for (const auto &it : initial)
  	Log::message("%s ", it.key.get());