file-io

问题 I am trying to get the bytes of a particular file from the zipped file input stream. I have the input stream data of the Zipped file. From this I am getting the ZipEntry and writing the contents of each ZipEntry to a output stream and returning the byte buffer. This will return the buffer size output stream, but not the contents of each particular file. Is there a way I can convert the FileOutputStream to bytes or directly read the bytes of each ZipEntry? I need to return the ZipEntry

问题 I am trying to get the bytes of a particular file from the zipped file input stream. I have the input stream data of the Zipped file. From this I am getting the ZipEntry and writing the contents of each ZipEntry to a output stream and returning the byte buffer. This will return the buffer size output stream, but not the contents of each particular file. Is there a way I can convert the FileOutputStream to bytes or directly read the bytes of each ZipEntry? I need to return the ZipEntry

问题 I'm trying to fetch an entire file into memory (done - using StringIO) - but these objects don't really behave exactly like 'real' files as far as I can see - I get the whole contents, or I can read a line at a time, but I can't work out how to apply this pattern: import csv with open(#MYMEMORYFILE_HERE#, 'rb') as csvfile: spamreader = csv.reader(csvfile, delimiter=' ', quotechar='|') for row in spamreader: Is there a way of treating a memoryfile just like an on-disk file , so I can use the

问题 im trying to open a file using StreamReader and ive to set a Encoding, but i want it to take the Default Windows Encoding... how can i change my windows Encoding ??? 回答1: Regional and Language Options Control Panel Item; Advanced tab. Impacts the entire computer. 来源： https://stackoverflow.com/questions/469163/how-to-set-the-default-encoding-in-windows-xp

问题 im trying to open a file using StreamReader and ive to set a Encoding, but i want it to take the Default Windows Encoding... how can i change my windows Encoding ??? 回答1: Regional and Language Options Control Panel Item; Advanced tab. Impacts the entire computer. 来源： https://stackoverflow.com/questions/469163/how-to-set-the-default-encoding-in-windows-xp

问题 I am trying to create a GUI with a browse window to locate a specific file. I found this question earlier: Browsing file or directory Dialog in Python although when I looked up the terms it didn't seem to be what I was looking for. All I need is something launchable from a Tkinter button that returns a the path of the selected file from the browser. Anybody have a resources for this? EDIT: Alright so the question has been answered. To anybody with a similar question, do your research, the

问题 I am trying to create a GUI with a browse window to locate a specific file. I found this question earlier: Browsing file or directory Dialog in Python although when I looked up the terms it didn't seem to be what I was looking for. All I need is something launchable from a Tkinter button that returns a the path of the selected file from the browser. Anybody have a resources for this? EDIT: Alright so the question has been answered. To anybody with a similar question, do your research, the

问题 I have a text file that is being written to as part of a very large data extract. The first line of the text file is the number of "accounts" extracted. Because of the nature of this extract, that number is not known until the very end of the process, but the file can be large (a few hundred megs). What is the BEST way in C# / .NET to open a file (in this case a simple text file), and replace the data that is in the first "line" of text? IMPORTANT NOTE : - I do not need to replace a "fixed

问题 I am using Visual C++ 2008. I want to create a text file and write to it. char filename[]="C:/k.txt"; FileStream *fs = new FileStream(filename, FileMode::Create, FileAccess::Write); fstream *fs =new fstream(filename,ios::out|ios::binary); fs->write("ghgh", 4); fs->close(); Here is showing error of FileStream 回答1: You get an error because you have fs declared twice in two different ways; but I wouldn't keep anything of that code, since it's a strange mix of C++ and C++/CLI. In your question is

问题 What ist the fastest way to copy a big number of files in Java. So far I have used file streams and nio. Overall streams seem to be faster than nio. What experiences did you make so far? 回答1: http://www.baptiste-wicht.com/2010/08/file-copy-in-java-benchmark/ might get you your answer. For the benchmark, I made the tests using different files. Little file (5 KB) Medium file (50 KB) Big file (5 MB) Fat file (50 MB) And an enormous file (1.3 GB) only binary And I made the tests first using text