bytearray

问题 Lets say In C++ I got code like this.. void * target uint32 * decPacket = (uint32 *)target; So in C# it would be like.. byte[] target; UInt32[] decPacket = (UInt32[])target; Cannot convert type byte[] to uint[] How do I convert this memory aligning thing C++ does to arrays to C#? 回答1: Well, something close would be to use Buffer.BlockCopy: uint[] decoded = new uint[target.Length / 4]; Buffer.BlockCopy(target, 0, decoded, 0, target.Length); Note that the final argument to BlockCopy is always

问题 Problem: Binary data of fixed size records Want to use struct.unpack_from and struct.pack_into to manipulate the binary data Want no copies of the data Want multiple views into the memory to simply offset calculations etc. Data could be in an array.array bytearray or ctypes string buffer What I tried to do: part1 = buffer(binary_data, 0, size1) part2 = buffer(binary_data, size1, size2) part3 = buffer(binary_data, size1 + size2) # no size is given for this one as it should consume the rest of

问题 I have a server side application that will return an image. These are the response headers: Content-Disposition: attachment; filename=8822a009-944e-43f4-999b-d297198d302a;1.0_low-res Content-Length: 502343 Content-Type: image/png Date: Mon, 03 Aug 2015 19:13:39 GMT Server: Apache-Coyote/1.1 In angular, I need to display the image. When getting the image, I use the angularJS $http to call the server and put the result in scope, but I never reach the success function of $http . Executing this

问题 I am currently working on a c# web API. For a specific call I need to send 2 images using an ajax call to the API, so that the API can save them as varbinary(max) in the database. How do you extract an Image or byte[] from a HttpContent object? How do I do this twice? Once for each image. - var authToken = $("#AuthToken").val(); var formData = new FormData($('form')[0]); debugger; $.ajax({ url: "/api/obj/Create/", headers: { "Authorization-Token": authToken }, type: 'POST', xhr: function () {

问题 As you may have figured out from the title, I'm having problems converting a QByteArray to an integer. QByteArray buffer = server->read(8192); QByteArray q_size = buffer.mid(0, 2); int size = q_size.toInt(); However, size is 0. The buffer doesn't receive any ASCII character and I believe the toInt() function won't work if it's not an ASCII character. The int size should be 37 (0x25), but - as I have said - it's 0. The q_size is 0x2500 (or the other endianness order - 0x0025 ). What's the

问题 var FileBuff: TBytes; Pattern: TBytes; begin FileBuff := filetobytes(filename); Result := CompareMem(@Pattern[0], @FileBuff[0], Length(Pattern)); end; Is there any function such as Result := Pos(@Pattern[0], @FileBuff[0]); 回答1: I think this does it: function BytePos(const Pattern: TBytes; const Buffer: PByte; const BufLen: cardinal): PByte; var PatternLength: cardinal; i: cardinal; j: cardinal; OK: boolean; begin result := nil; PatternLength := length(Pattern); if PatternLength > BufLen then

问题 I want to convert an int to a byte[4] array using BCD. The int in question will come from an device id and his needed to speak to an device via serialport. Is there any pre-made function that does this or can you give me a simple way of doing this? example: int id= 29068082 would output: byte[4]{0x82, 0x80, 0x06, 0x29}; 回答1: Use this method. public static byte[] ToBcd(int value){ if(value<0 || value>99999999) throw new ArgumentOutOfRangeException("value"); byte[] ret=new byte[4]; for(int i=0

问题 I'm trying to convert one image from byte[] to Bitmap to show the image in the Android application. byte[]'s value is got by database and I checked that it was not null. After that, I would like to convert the image but could not success. The program shows that Bitmap's value is null. I think there are some problems in converting process. If you know any tips, please show me. byte[] image = null; Bitmap bitmap = null; try { if (rset4 != null) { while (rset4.next()) { image = rset4.getBytes(

问题 The Client side receives a formal JSON content "{\"Id\":[1,2,3],\"Size\":56}" , but get an error in deserialization the byte array. 1 Error occurs in the statement below IRestResponse<key> response = client.Execute<key>(request); 2 Error message is "No parameterless constructor defined for this object." 3 The object class in client size is the same as it's in server side: public class key { public byte[] id { get; set; } public int Size { set; get; } } 4 I've tried passing object that

问题 I want to save a multidimensional byte array to a SQL Server database. I know how to save a byte array which is a image conversion to a database. For that the data type I used is image . But now I want to store another byte array which is multidimensional byte array byte [,] temp , which has two dimensions with x,y values. I searched on internet and here, it is said that using VARBINARY format. All I want to know is if I save my multidimensional array in a VARBINARY datatype data column, will