read-write

i have nexus s, nexus 4 and 6 mifare nfc tags, and want to make an desktop application with nfc reader/writer acr122u device (which i haven't bought it yet). But apart from android sdk, is there some other SDK needed for making an desktop application through eclipse with java? or i can directly buy and use the acr122u device (without sdk) and make the app through eclipse? If the SDK is needed, is there any link to download it for free or i have to buy it from the vendor itself? One more thing, does nexus S and ACR122U support felica nfc cards? I have mifare classic nfc cards, its working fine

What is a simple way to output text to file in a R5RS compliant version of Scheme? I use MIT's MEEP (which uses Scheme for scripting) and I want to output text to file. I have found the following other answers on Stackoverflow: File I/O operations - Scheme How to append to a file using Scheme Append string to existing textfile [sic] in IronScheme But, they weren't exactly what I was looking for. ansebbian0 The answers by Charlie Martin, Ben Rudgers, and Vijay Mathew were very helpful, but I would like to give an answer which is simple and easy to understand for new Schemers, like myself :) ;

I am trying to find a library that overwrites an existing cell to change its contents using Python. what I want to do: read from .xlsx file compare cell data determine if change is needed. change data in cell Eg. overwrite date in cell 'O2' save file. I have tried the following libraries: xlsxwriter combination of: xlrd xlwt xlutils openpyxl xlsxwriter only writes to a new excel sheet and file. combination: works to read from .xlsx but only writes to .xls openpyxl: reads from existing file but doesn't write to existing cells can only create new rows and cells, or can create entire new workbook

I would like to know whether there is a Posix standard guarantee that modifications to a file are guaranteed to be visible through repeated open / close calls on the same file name. For exposition, consider this Bash script: #!/bin/bash FILE=$(mktemp) echo "Some data" >> $FILE cat $FILE Is it guaranteed that by the time echo finishes, all data is available in the file? In terms of Posix functions, an example could be like this: const char fn[] = "/tmp/somefile"; const char data[] = "hello world"; // Stage 1 { int fd = open(fn, O_CREAT); write(fd, data, sizeof data); // #1 close(fd); } // Stage

I have gone through the Insert 2 million rows into SQL Server quickly link and found that I can do this by using Bulk insert. So I am trying to create the datatable (code as below), but as this is a huge file (more than 300K row) I am getting an OutOfMemoryEexception in my code: string line; DataTable data = new DataTable(); string[] columns = null; bool isInserted = false; using (TextReader tr = new StreamReader(_fileName, Encoding.Default)) { if (columns == null) { line = tr.ReadLine(); columns = line.Split(','); } for (int iColCount = 0; iColCount < columns.Count(); iColCount++) { data

I am writing a html based app, and want to store and retrieve data from local file. This app will not be hosted on a web server. Can anyone please help enlighten the topic on how can this be done? Try HTML 5 FileSystem API Below links has details http://dev.w3.org/2009/dap/file-system/pub/FileSystem/ http://www.html5rocks.com/en/tutorials/file/filesystem/ You should use FileSystem API of HTML5: window.requestFileSystem(window.TEMPORARY, 5*1024*1024, function(){ fs.root.getFile('test.dat', {}, function(fileEntry) { fileEntry.file(function(file) { // Here is our file object ... }); }); },

The scenario The user right-clicks a directory in Finder and finds a custom MenuItem. Clicking that Item will tell my app to open up a window where the user can do his work. When he is finished files need to be written to to the folder he selected by right-clicking. The Problem I got everything to work now, but the very last part. The extension can't write to the selected folder. The user selecting the folder he wants to interact with seems to not be part of the Powerbox which - how I understand it - is only activated with openPanel and savePanel . How do I get the rights to interact with the