Search DaniWeb - bitarray

Understanding byte.Max/MinValue 8 Years Ago by Suzie999 … byt = byte.MaxValue; BitArray bitArray = new BitArray(byt); Debug.WriteLine("bitarray " + bitArray.Get(0).ToString()); Debug.WriteLine("bitarray " + bitArray.Get(5).ToString()); What… the opposite of what I got, which was the following. bitarray False bitarray False I thought `byte byt = byte.MaxValue` would set… Re: Understanding byte.Max/MinValue 8 Years Ago by nullptr As ddanbe pointed out, the byte value is being converted to an integer - BitArray(int32). Effectively what you have written is: BitArray bitArray = new BitArray(255); 255 bits all set to 0 (false). Re: Understanding byte.Max/MinValue 8 Years Ago by Suzie999 Thanks guys, I think I have it. If I want a BitArray containing 8 bits I use `BitArray bitArray = new BitArray(8);` Re: Understanding byte.Max/MinValue 8 Years Ago by ddanbe A BitArray looks a bit(haha) confusing at first. Internally real bits are stored, externally you get booleans back. It is some sort of wrapper class to make working with bitwise operators "simpler". It will all clear out after reading [this](http://www.dotnetperls.com/bitarray) I hope. Re: Understanding byte.Max/MinValue 8 Years Ago by Suzie999 Thank's ddanbe but your link leads to a BitArray(int32), I'm passing a byte. To me it does not make sense that MaxValue should have all its bits set to false. Re: Understanding byte.Max/MinValue 8 Years Ago by Suzie999 After reading somewhere that the BitArray class actually contains an int array, I decided it might … How to convert image to binary and get result in text box 7 Years Ago by _1_14 ….Save(ms, System.Drawing.Imaging.ImageFormat.Bmp); BitArray bitarray = new BitArray(ms.ToArray()); foreach (bool item in bitarray) { arr[i] = item; i++; } return arr… Troubles with Threading 15 Years Ago by jrscribner … String = RemoteIpEndPoint.Address.ToString Dim BitDet As BitArray 'Dim Command As String BitDet = New BitArray(receiveBytes) Dim strReturnData As String = System.Text… Finding large (2,000,000th) prime. 13 Years Ago by nwhitesel … i = 2; i < limit; i++) { primeNumbers[i] = true; } // BitArray primeNumbers = new BitArray(limit, true); primeNumbers[0] = false; primeNumbers[1] = false; for… character to unicode 13 Years Ago by whitelion_pc …()); byte[] bytes = new Byte[byteCount]; bytes= unicode.GetBytes(character); BitArray bits = new BitArray( bytes ); System.Collections.IEnumerator bit_enumerator = bits.GetEnumerator(); int bit_array_length… Issues with function 11 Years Ago by dreday92 …") { for (int index = 0; index < PatternSize; index++) { OperandArray bitArray[index] = '0'; } } else { for (int index = 0; index < PatternSize… Re: Issues with function 11 Years Ago by dreday92 … == '0') { for (int index = 0; index < PatternSize; index++) { OperandArray bitArray[index] = '0'; } } else { for (int index = 0; index < PatternSize… Re: Issues with function 11 Years Ago by NathanOliver … == '0') { for (int index = 0; index < PatternSize; index++) { OperandArray bitArray[index] = '0'; } } else { for (int index = 0; index < PatternSize… Writing Bits with c# 14 Years Ago by alaamido … a simple problem which is writing bits I used the bitarray class but there is a problem is that when I… First C# attempt is failing 13 Years Ago by shindu … class which generates a Board type struct, that was a BitArray but due to this on going issue has sence been… Write unsigned char array to a file 12 Years Ago by cableguy31 …(int k = 0; k < bits; k++) { myfile << bitArray[k]; } myfile << "\n"; // Adds new line… Simple Solution, much confusion 11 Years Ago by dreday92 … BitPattern Operation_ADD (const BitPattern&, bool&) const; private: OperandArray bitArray; // the array of 1s and 0s representing bits int BinaryExp… Re: Read registers from PLC and check bits 12 Years Ago by nick.crane … 32bit integer to bit array var bits = new System.Collections.BitArray(new[] { read[i] }); Console.Write(string.Format("Register… could also put all the registers in to a single BitArray. But remember that the LSB is index 0. [CODE]… // put all bits in BitArray (remember LSB is index 0) var allbits = new System.… Re: Boolean Combinations 14 Years Ago by ChrisPadgham …. this is achieved in .NET with a BitArray. In the example below I have set values…"" Dim Int1 As Int32 Dim test As New BitArray(9, False) test.Item(1) = True test.Item…End Sub Public Function BinToInt(ByVal BAin As BitArray, ByVal BAdigits As Int16) As Int16 Dim … Re: Read from comma separated file and put into MySQL 13 Years Ago by N1GHTS … this: [code] unsigned int N = 23604408; // the binary number int BitArray[32]; int t = 0; for (;t<32;t…++) BitArray[t] = ((N & (1 << t)) > 0) ? 1 : … bit individually by testing for 1 or 0 in [b]BitArray[n][/b]. If you need to be more memory efficient… Re: Bits manipulation - Modified Huffman 13 Years Ago by suncica2222 … like it suits my needs,so I've put bitarray.h and bitarray.cpp into project I've passed bitmap data field… when i comment some if's in PutBits() implementation in bitarray.cpp (debug PutBits() and see for yourself) in bit_array_c class… Re: Algorithmic challenge 9 Years Ago by Gribouillis … pip install bistring UMAX = 2 ** 16 a = BitArray(length=UMAX) z = BitArray(length=1) s = "Hel\0lo world" for c… Re: Sieve of Erastothenes simply with nested loops 8 Years Ago by Gribouillis … could be achieved by using a bitarray structure from module [bitarray](https://pypi.python.org/pypi/bitarray/) (1 bit per boolean value), but… Re: Create byte array 12 Years Ago by Gribouillis There is also a bitarray type in pypi [url]http://pypi.python.org/pypi/bitarray[/url] Re: Creating binary matrix in openCV 11 Years Ago by Ancient Dragon … b2:2; // bit 1 // etc for 8 bits } struct bits bitArray[8]; With the above structure you can set/clear bits… by using the bit name instead of shifting. Example: `bitArray[0].b1 = 1; // set bit 0` Re: convert string[] to byte[] 14 Years Ago by checho … doesnt seem to work for me [CODE] string[] result = MergeElements(bitArray); foreach (string str in result) Console.Write(str + " "… Re: Prime number generator, and button arrays help! 13 Years Ago by Jimingle10 …; var maxSqRt = Math.Sqrt(max); var eliminated = new System.Collections.BitArray(max + 1); // Two is a given prime so we label… Re: Boolean problem. 13 Years Ago by nick.crane If you have several flags that need to be reset you might considered using a BitArray. This has as SetAll method that will set all to flags to true or false. The only problem with this is having to keep track of which index corresponds to which flag. Re: Signed and Unsigned int in python 13 Years Ago by woooee ….1]bitbuffer[/URL] and [URL=http://michael.dipperstein.com/bitlibs/]bitarray[/URL], Also, check [URL=http://pypi.python.org/pypi]PyPi… Re: bit operations and testing for exponent of two 10 Years Ago by TrustyTony Python has sets use those or there is module https://pypi.python.org/pypi/bitarray/ I will look your code later in home, if somebody does not review it before that.