I have an application that crunches a bunch of text files. Currently, I have code like this (snipped-together excerpt): FileInfo info = new FileInfo(...) if (info.Length > 0) { string content = getFileContents(...); // uses a StreamReader // returns reader.ReadToEnd(); Debug.Assert(!string.IsNullOrEmpty(contents)...
Hello, can anyone tell me how to random access a file beyond 2GB with android SDK. I was trying to seek to a position > 2147483647 and got the exception: "Value too large for defined datatype". That is odd as the parameter for the seek command is type "long". See the code example for details: RandomAccessFile BigFile; BigFile = new...
I know this is asked commonly but googling doesn't turn up a definitive answer for Mathematica so I thought it would be valuable to have this on StackOverflow. I've been doing this with Import but it occurred to me that that might be horribly inefficient, Import being such a heavyweight function. So the question is, can you improve on ...
I have a list of 50,000 ID's in a flat file and need to remove any duplicate ID's. Is there any efficient/recommended algorithm for my problem? Thanks. ...
I have a file located in my repo on JasperServer-side (delivery_settlement_files/delivery_list.jxml). But for some reason it continues to spit an error: Unable to locate the subreport with expression: ""repo:delivery_list.jrxml"". java.lang.Exception: repo:delivery_list.jrxml not found. It exists, but does not find. What could be...
I have a spring web application running on JBoss which is creating a csv file containing a report. The application must provide a link to the report when it finish its generation, and the user should be able to download it. I am thinking to write the file directly inside the war, so then we could read it from the web application. But I ...
I'm trying to read from a file and write into another. The problem arises when I'm trying to preserve newlines from the original file to the new one. def caesar_encrypt(orig , shift): enctextCC = open("CCencoded.txt" , 'w') for i in range(len(orig)): for j in range(len(orig[i])): curr = orig[i][j] if ord(cu...
One hell of a long question :) Here's how I usually do it: StringBuilder b = new StringBuilder(); BufferedReader r = new BufferedReader(new StringReader(s)); while ((String line = r.readLine()) != null) b.append(doSomethingToTheString(s) + "\n"); However, this replaces all the new line characters in the file with a line feed, plu...
When I traced my reference MATLAB script, I found files with the .mat extension. My questions are: What is the difference between .mat and .m files? How does one open files with the .mat extension? ...
Hi, I do have a program which logs some specific events in a text file (it keeps the file open). Now I want to program a second application which shows these logs on a form. can I set an event for any change in a text file which is opened by another process? or I have to read that regularly? thanks ...
Hi, (background) I'm using Java.io.File to do some windows directory searching. Basically the user inputs a directory path and I validate the path with file.isDirectory(). If the path is invalid I ask the user to re-enter a correct path. Once I get a valid directory I proceed with other File operations. (problem) Now the problem occurs...
I'm just doing an exercise where I have a list of files (given as absolute paths), which should be copied to a given directory if some sort of flag is set. This is my function to copy the files: def copy_to(paths, dst): if not os.path.exists(dst): os.makedirs(dst) for path in paths: shutil.copy(path, dst) However, the giv...
Is there a function in PHP to query the number of open files? Sort of like memory_get_usage() but for open files. I'm running the unit test suites for Zend Framework. The problem is that after it gets through the tests for Zend_Search_Lucene, subsequent tests start failing. But if I skip the Zend_Search_Lucene tests, all the test s...
I have a very simple piece of code which just writes a small amount of data to a file at some regular interval. Once my program has created the file and appended some data, when I open this file in vim(or any other editor for that matter) and edit it, my process cannot seem to update the file anymore. I do not see any errors being return...
i tried a program comparing C:\Program Files and C://Program Files i checked with compareTo()==0 it comes they are equal. But i doubt if there is any difference between //&\ Is there any difference? what is the difference between c:/program files and //? ...
hi, I have many images on remote server say images.foo.com/222 & i want to access file names of all files that resides in the folder 222 on images.foo.com/. i have tried following code but getting error "virtual path is not valid" : imageserver = http://images.foo.com/222; DirectoryInfo di = new DirectoryInfo(imageserver); // line givin...
I am looking for an embeddable library for doing atomic file I/O from java. I need the library to support the following features. basic page management -- allocate/free pages and read/write atomic (all or nothing) writes (basically journaled I/O) A simple binary page format (needs to be readable by C++) It does not need to be that fas...
I want to create a text file, than load it up without any newlines or spaces (This is for a simple RPG). So I want to test for all 3 major OS line separators, and than the current OS'(s?) one. I know I can get the current one using System.getProperty("line.separator"), but how can I get Linux, Mac, and Windows line separators and turn ...
Hey all. I'm creating an application that is going to be generating and storing millions of images. Before I start on this, I'm wondering if anyone knows if it's better to generate more folders and only keep a few files in each, or should I use a few folders and fill them up with lots of files? The generator will be written in C++ and...
How can I find all files in directory with the extension .txt in python? Thanks. UPDATE: Thanks everyone, wide variety of examples for the next person that searches for this. ...