Vector

Description

The Vector class stores a resizable array of objects.

Constructors

• Vector() – Creates an empty Vector object.

• Vector(Vector v) – Creates a Vector with a copy of v.

Operators

• object& operator[]( int index ) – Accesses value at location index. Throws an exception if index is out of range.
• Vector& operator =( Vector v ) – Copies the values from Vector v. Returns this object.
• bool operator ==( Vector v ) – Returns true if both Vectors contain the same number of items, and each item is equal to the corresponding item in the other Vector.

Methods

• void clear() – Empties the Vector.
• bool empty() – Returns true if the Vector is empty.
• size_t size() – Returns the count of items in the Vector.
• object& front() – Accesses value at the beginning of the Vector. Throws an exception if the Vector is empty.
• object& back() – Accesses value at the end of the Vector. Throws an exception if the Vector is empty.
• void push_back( object o ) – Inserts the value o at the end of the Vector.
• void pop_back() – Removes value from the end of the Vector. Do not invoke this on an empty Vector.
• void insert_at(int index, object o) – Inserts o at position index. Throws an exception if index is out of range.
• void erase_at(int index) – Removes object at position index. Throws an exception if index is out of range.
• void resize(size_t count) – Resizes the Vector to contain count elements. If the current size is greater than the count, the container is reduced to its first count elements. If the current size is less than count, additional elements are appended and default-initialized.
• void resize(size_t count, object o) – Resizes the Vector to contain count elements. If the current size is greater than the count, the container is reduced to its first count elements. If the current size is less than count, additional elements are appended and copied from o.
• void reserve( size_t count ) – Pre-allocates a buffer of size count for future use.
• size_t capacity() – Returns the current buffer size.