I want to make a bitset in C++. I did a bit of research. All examples I found where like this: bitset<6> myBitset; // do something with it But I don't know the size of the bitset when I define the variable in my class: #include <bitset> class Test { public: std::bitset *myBitset; } This won't compile... And initializing like ...
I would like to know what is the memory usage of BitSet in Scala.For example, if I do: var bitArray:BitSet=new BitSet(10) bitArray.add(0) bitArray.add(2) bitArray.add(4) bitArray.add(6) bitArray.add(8) How does that compare with and array containing the even numbers 0,2,4,6,8? What about writing a number in binary: var...
Is there any performance loss/gain using bitset in place where hand written? How to build the following using a bitset at runtime make all the bits between 2 and 5 as zero i.e., 11110011. ...
i have tried to implement following code #include <iostream> #include <bitset> using namespace std; int main(){ //bitset<4>mybits; //cout<<mybits<<endl; int a[]={3,1,4,5,7,8}; int max=a[0]; int t=sizeof(a)/sizeof(a[0]); for (int i=1;i<t;i++){ if (a[i]>max){ max=a[i]; ...
I need to use bit flags with more than 32 bits (33 to be exact right now). I tried and find std::bitset doesn't handle more than 32 bits (ulong). Do I have to use vector or there's a way to make bitset to work? I am limited to c++98 in this project so I can't use boost. Thanks. Edit: I'd like to do something like this: const uint64 ...
i m trying to make a program to convert a number into it's binary. Code: #include<iostream> #include<algorithm> #include<bitset> using namespace std; int main() { int a; string k; bitset<CHAR_BIT> n; cin>>a; n=bitset<CHAR_BIT>(a); cout<<n<<" "; return 0...
I'm not sure if I'm using the correct terms, but I am curious how it's determined how much to increase the size of a Collection in Java when it gets full? I've tried searching but I'm not really coming up with anything useful. So, if I have something like List l = new ArrayList(1); l.add("1"); l.add("2"); How does it determine how mu...
Hi, I'm doing a project that involves solving some NP-hard graph problems. Specifically triangulation of Bayesian networks... Anyway, I'm using std::bitset for creating an adjacency matrix and this is very nice... But I would like to scan the bitset using a bsf instruction. E.g. not using a while loop. Anybody know if this is possible...
Hello, I want to use a cache, implemented by boost's unordered_map, from a dynamic_bitset to a dynamic_bitset. The problem, of course, is that there is no default hash function from the bitset. It doesn't seem to be like a conceptual problem, but I don't know how to work out the technicalities. How should I do that? Thanks. ...
Hi, I sub classed the BitSet class to add some additional methods. One of the is called "fold". It splits the BitSet in 2 halves and "combines" them with an or. (increases Information density) This works but the size (1024) of the folded BitSet is still the original size. Code: BitSet firstHalf; BitSet secondHalf; for(int...
Is there a Python class or module that implements a structure that is similar to the BitSet? ...
I want to store bits in an array (like structure). So I can follow either of the following two approaches Approach number 1 (AN 1) struct BIT { int data : 1 }; int main() { BIT a[100]; return 0; } Approach number 2 (AN 2) int main() { std::bitset<100> BITS; return 0; } Why would someone prefer AN 2 over AN 1? ...
Hallo all, I'm looking for some good library, that works with bitsets or bitarrays. Anybody knows something better (or not worse in all cases) then boost::dynamic_bitset? No matter if the library is open source or commercial. In my project it is a common task to store and work with large bit masks, that contain less number of ones. So t...