[STL Study Notes] Vector

Vector is the template defined in namespace STD:

NamespaceSTD {Template<ClassT,ClassAllocator = Allocator <t>ClassVector ;}

One of the secrets of Vector's excellent performance is to configure more memory than its contained elements. The capacity () function returns the number of elements that a vector can accommodate. If the number is exceeded, the vector needs to reconfigure the internal memory.

The vector capacity is important because:

1. Once the memory is reconfigured, all references, pointers, and iterators related to the vector element will become invalid.

2. Time-consuming memory Reconfiguration

Vector iterator Functions

C. Begin ()

C. End ()

C. rbegin ()

C. rend ()

 

[STL Study Notes] Vector