6. std::vector construction

• 
      // Default constructor
      explicit vector( A const& al = A() ); // (*)
  
      // Initial size and values
      explicit vector( size_type n, T const& v = T(), A const& al = A() );
  
      // Copy constructor
      vector( vector const& x );
  
      // Initial range of values
      vector( const_iterator first, const_iterator last, A const& al = A() );
  
  

• (*) where

  • A is the memory allocator type, and

  • T is the container's data type.

• Note that using the second constructor requires either

  1. a default constructor for T

  2. an explicit value for the second argument.