binaryfiles

问题 For one and a half years, I have been keeping my eyes on the git community in hopes of making the switch away from SVN. One particular issue holding me back is the inability to lock binary files. Throughout the past year I have yet to see developments on this issue. I understand that locking files goes against the fundamental principles of distributed source control, but I don't see how a web development company can take advantage of git to track source code and image file changes when there

问题 For one and a half years, I have been keeping my eyes on the git community in hopes of making the switch away from SVN. One particular issue holding me back is the inability to lock binary files. Throughout the past year I have yet to see developments on this issue. I understand that locking files goes against the fundamental principles of distributed source control, but I don't see how a web development company can take advantage of git to track source code and image file changes when there

问题 I'm writing an application that allows users to upload images onto the server. I expect about 20 images per day all jpeg and probably not edited/resized. (This is another question, how to resize the images on the server side before storing. Maybe someone can please drop a .NET resource for that in the comment or so). I wonder now what the best place for storing uploaded images is. Store the images as a file in the file system and create a record in a table with the exact path to that image.

问题 I would like to read in a JPEG-Header and analyze it. According to Wikipedia, the header consists of a sequences of markers. Each Marker starts with FF xx , where xx is a specific Marker-ID. So my idea, was to simply read in the image in binary format, and seek for the corresponding character-combinations in the binary stream. This should enable me to split the header in the corresponding marker-fields. For instance, this is, what I receive, when I read in the first 20 bytes of an image:

问题 Trying to read simple record structure from Binary file, but get the following error message. What is the problem? An unhandled exception of type 'System.IO.EndOfStreamException' occurred in mscorlib.dll Additional information: Unable to read beyond the end of the stream. using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; using System.IO; namespace Reading_from_Binary_File { class Program { struct TBook { public string author;

问题 I have a binary data stream which contains data that should be interpreted as a Qstring. Starting from the third byte. Here is how the package is generated (on a client). QByteArray package; package.append( QByteArray::fromHex("0002") ); // First two bytes package.append( "filename.txt" ); // String of undefined size package.append( QByteArray::fromHex("00")); // End of string The decoding is done on a different machine (server). I would like to get a Qstring of value "filename.txt" from the

问题 Hello I have an assignment where I am supposed to generate random numbers. Then write them to a binary file. After that I am supposed to read the data print it to the screen. Then finally, I have to sort the data and output. I have to do that without using arrays. I was able to do the first two parts. However, I couldn't do the last part correctly, so I went to google and youtube looking for an illustration on how to do that, but I was out of luck. I would really love to know what is it that

问题 So i had an exam, and one of the excercies included to scan names from a binary file. I had used fscanf() , but my prof told me that i cant use fscanf in binary files. but why? my program works just fine even if i do so. 回答1: I admit that I didn't find a way to explain what is wrong with fscanf() and binary files that would be understood easily, but here is an example of how the binary file generated is read erroneously by fscanf() #include <stdio.h> #include <stdlib.h> #include <string.h>

问题 The part of the code which gives rise to the segmentation fault is given below. ifstream xiFileId(xifile, ios::binary); //xifile is a char * //the ii_t class in the following line is taken from http://stackoverflow.com/questions/1855704/c-binary-file-i-o-to-from-containers-other-than-char-using-stl-algorithms written by http://stackoverflow.com/users/14065/loki-astari ii_t<uint> xi_in(xiFileId); copy(xi_in, ii_t<uint>(), xi.data()); //xi is a 2D boost::multi_array //my efforts to debug ios:

问题 Blockquote have some files in the .dat format,these files contain some valuable information however they can be quite big, trying to open each file in notepad and extracting the information I need is not efficient at all, as it takes notepad a long time to open each file. I have come across this Binary Access Read function which apparently opens large files and allows you to read them very quickly. Sub ReadEntireFileAndPlaceOnWorksheet() Dim X As Long, FileNum As Long, TotalFile As String,