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Tip of the Day
Language: C++
Expertise: Intermediate
Dec 18, 1998

WEBINAR:

On-Demand

Application Security Testing: An Integral Part of DevOps


A Standard Bit Vector

The Standard Template Library provides the specialization vector<bool>. The specialization is implemented in a way that squeezes each element into a single bit, rather than a bool variable. When a large amount of bits has to be stored in a vector <bool>, this specialization is very efficient in terms of memory usage and has the familiar vector interface:
 
#include <vector>
#include <iostream>
using namespace std

void transmit(vector <bool> &binarystream) {
  cout<<binarystream[0]; // subscript operator provided
  vector<bool>::const_iterator bit_iter = binarystream.begin(); //iterators
  //etc.
}
Danny Kalev
 
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