I need to get the bytes from an array of bytes starting at a certain index and for a certain length (4), how can get this? Note: I don't want to use the Array.copy sub as it is not a function. I need to put it in something like Sub MySub([arguement as byte()]the_function_I_Need(Array, index, length)) ...
I have a single that might have a decimal place but might not. I have to put the digit before the decimal into the first 4 bytes and the digit after in the next 4 bytes. So 1.1 would be 01-00-00-00-01-00-00-00 or 2.1 would be 02-00-00-00-01-00-00-00 or 1 would be 01-00-00-00-00-00-00-00 The digit before the decimal point is stored like ...
how do I extract 12byte chunks from a binary file at certain positions within the file. If I wanted to extract the first 12 bytes I could do something like head -c12 file.bin>output If I wanted to extract 12 bytes from byte61 I could do something like head -c72 file.bin|tail -c12 >output Is there a simpler way if I have something ...
It seems the most obvious thing, but I just can't work out how to get the length of bytes sent over a network using a TCPClient and TCPListener? This is my code so far: 'Must listen on correct port- must be same as port client wants to connect on. Const portNumber As Integer = 9999 Dim tcpListener As New TcpListener(IPAddress...
Anybody have any idea why the BCL team chose to use Byte* instead of IntPtr in the constructors for UnmanagedMemoryStream? This forces you into using an unsafe context in order to construct the type. It seems like they could have used IntPtr and that wouldn't have forced the unsafe context. ...
Does anyone know of a way to determine if a image stream is in color or black and white, I have thousands of images to process from sql server stored in a varbinary. Can one read the images header (if type of image is known - bitmaps) from byte offsets directly? IF so how can i do this in sql. ...
Hello, I am tring to convert a set of strings to a byte[] array. At first, I do something like this to convert a byte array to a string: public String convertByte(byte[] msg) { String str = ""; for(int i = 0; i < msg.length; i++) { str += (msg[i] + " * "); } return str; } When I try to convert b...
I'm developping imaging functions (yes I REALLY want to reinvent the wheel for various reasons). I'm copying bitmaps into unsigned char arrays but I'm having some problem with byte size versus image pixel format. for example a lot of images come as 24 bits per pixel for RGB representation so that's rather easy, every pixel has 3 unsign...
public void EncryptFile() { OpenFileDialog dialog = new OpenFileDialog(); dialog.Filter = "JPEG Files (*.jpeg)|*.jpeg|PNG Files (*.png)|*.png|All files (*.*)|*.*"; dialog.InitialDirectory = @"C:\"; dialog.Title = "Please select an image file to encrypt."; if (dialog.ShowDialog() == ...
Hi! Given the lambda expression below where Province type contains a public property "byte CountryId" and Country type which contains a public property "byte Id". Expression<Func<Province, bool>> exp = p => p.CountryId == country.Id; The Expression is later used by NHibernate Linq provider and threw an exception. When I inspected th...
Is there a way to know if Emacs is actually using a byte compiled file (.elc)? It is necessary to put all .elc files i a folder or just in the same directory has their original .el? ...
I'm not a veteran in socket programming, so while analyzing code I found in a database API I came across this code public static void WriteInt(int i, NetworkStream bufOutputStream) { byte[] buffer = new byte[IntSize]; WriteInt(i, buffer, 0); bufOutputStream.Write(buffer, 0, buffer.Length); } pu...
how to translate this piece of C code into Python >=2.6 ? unsigned long memSum(unsigned char *p, unsigned long len) { unsigned long i, sum=0; for(i=0; i<len; i++) sum = sum + *p++; return sum; } of course f=open("file_to_sum",'rb') m = f.read() f.close() sum( array.array('B', m) ) does not work ...
Hello, I got the error: System.ArgumentException: Object must be of type Int32. in this code: MyBO target = new MyBO() { x1 = 20 }; In MyBO i have an attribute: public byte x1 {get; set;} What's wrong? I tried with MyBO target = new MyBO() { x1 = (byte)20 }; but i got the same error. Please help. Thanks! ...
I'm trying to open an existent file save a bytes in the start of it to later read them. How can I do that? Because the "&" operand isn't working fo this type of data. I'm using Encoding.UTF8.GetBytes("text") to convert info to bytes and then add them. Help Please. ...
I am looking for performance efficient ways to compare two byte[] for equality. Sizes are above 1 MB, so the overhead for each array element should be minimized. I aim to beat the speeds of SequenceEqual or a hand-coded for-loop over every item, by avoiding the repetitive bound checks for both arrays. In the same way that Array.Copy co...
I got an integer: 1695609641 when I use method: String hex = Integer.toHexString(1695609641); system.out.println(hex); gives: 6510f329 but I want a byte array: byte[] bytearray = new byte[] { (byte) 0x65, (byte)0x10, (byte)0xf3, (byte)0x29}; how can i make this?? :D thnx! ...
Hi, I've this code: InputStream is = socket.getInputStream(); int b; while ((b = is.read()) != -1) { System.out.println(b); } A byte its range is -128 until +127. But one of the printed bytes is 210. Is this the result of converting the read byte to an int? (So that the negatif byte becomes a positif int) If so, can I do the same...
How can I convert a short (2 bytes) to a byte array in Java, e.g. short x = 233; byte[] ret = new byte[2]; ... it should be something like this. But not sure. ((0xFF << 8) & x) >> 0; EDIT: Also you can use: java.nio.ByteOrder.nativeOrder(); To discover to get whether the native bit order is big or small. In addition the follow...
Hi I'm working on implementing a protocol tha tells me to put decimals from 0 to 160 into a single byte. I assume, since it doesn't specify what sort of BCD it wants, that I am to put one digit into the lower nibble and the other decimal into the higher nibble. Meaning I get 1 byte with a two-digit decimal. But how would any larger value...