23.2 The Fundamental Containers (cont.)
- C'tors
- Default creates an empty container
- Integer arg. creates container with size elements,
initialized to default value
- 2nd form allows explicit initialization. Same for all
elements
- Can be initialized with another collection
- at
- checks for index validity, unlike operator[]
- front, back
- return the first and last elements
- empty
- returns true if container has no elements
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