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• What is the easiest way to loop through a folder of files in C#?

  - by badpanda

  I am new to C# and am trying to write a program that navigates the local file system using a config file containing relevant filepaths. My question is this: What are the best practices to use when performing file I/O (this will be from the desktop app to a server and back) and file system navigation in C#? I know how to google, and I have found several solutions, but I would like to know which of the various functions is most robust and flexible. As well, if anyone has any tips regarding exception handling for C# file I/O that would also be very helpful. Thanks!!! badPanda

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• Creating a Mac OS application that interacts with all text fields

  - by mjdth

  What would be the first step to creating an application for Mac OS X that would take user interaction from any text field in the system? A couple examples of apps that do this are TextExpander and Typinator. What I want to do would be using similar functions to access Text fields throughout the computer during user input to give other additional options, I'm just not sure where to even start in Xcode and with what type of project to use. Any help or links would be greatly appreciated! Thanks!

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• What does this JavaScript error mean?

  - by Tommy

  Using the “Venkman” JavaScript debugger for Mozilla and getting the following error: XML Parsing Error: not well-formed Location: x-jsd:source?location=http%3A%2F%2F192.168.1.150%2Fscript.js&instance=337 Line Number 557, Column 50:<line><margin x='t'> - </margin><num> 554</num> ?? valid = false;</line> Functions works but I don't understand the error. Any help is appreciated. Thanks. function ValidateCheckBoxes() { var valid; $(document).ready(function(){ if($('input[@name=boxesA]:checked').size() == 0) {     valid = false; } else { valid = true; } }); return valid; }

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• Why not speed up testing by using function dependency graph?

  - by Maltrap

  It seems logical to me that if you have a dependency graph of your source code (tree showing call stack of all functions in your code base) you should be able to save a tremendous amount of time doing functional and integration tests after each release. Essentially you will be able to tell the testers exactly what functionality to test as the rest of the features remain unchanged from a source code point of view. If for instance you change a spelling mistake in once piece of the code, there is no reason to run through your whole test script again "just in case" you introduced a critical bug. My question, why are dependency trees not used in software engineering and if you use them, how do you maintain them? What tools are available that generate these trees for C# .NET, C++ and C source code?

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• "Ambiguous template specialization" problem

  - by Setien

  I'm currently porting a heap of code that has previously only been compiled with Visual Studio 2008. In this code, there's an arrangement like this: template <typename T> T convert( const char * s ) { // slow catch-all std::istringstream is( s ); T ret; is >> ret; return ret; } template <> inline int convert<int>( const char * s ) { return (int)atoi( s ); } Generally, there are a lot of specializations of the templated function with different return types that are invoked like this: int i = convert<int>( szInt ); The problem is, that these template specializations result in "Ambiguous template specialization". If it was something besides the return type that differentiated these function specializations, I could obviously just use overloads, but that's not an option. How do I solve this without having to change all the places the convert functions are called?

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• regex pattern to match only strings that don't contain spaces PHP

  - by Jamex

  Hi, I want to match the word/pattern that is contained in the variable, but only match against the words that don't have white spaces. Please give suggestions. $var = 'look'; $array = ('look', 'greatlook', 'lookgreat', 'look great', 'badlook', 'look bad', 'look ', ' look'); matches words: look, greatlook, lookgreat, badlook non matches: look great, bad look, look (trailing space(s)), (space(s)) look. The syntax of the below functions are OK, but it matches everything $match = preg_grep ("/$var/", $array); $match = preg_grep ("/^$var/", $array); (match words with 'look' at the start) but when I include the [^\s], it gives an error $match = preg_grep ("/$var[^\s]/", $array); Parse error: syntax error, unexpected '^', expecting T_STRING or T_VARIABLE TIA

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• Passing arguments to anonymous inner classes

  - by synic

  I'm trying to make an API library for our web services, and I'm wondering if it's possible to do something like this: abstract class UserRequest(val userId: Int) { def success(message: String) def error(error: ApiError) } api.invokeRequest(new UserRequest(121) { override def success(message: String) = { // handle success } override def error(error: ApiError) = { // handle the error } } I'm talking about passing parameters to the anonymous inner class, and also overriding the two methods. I'm extremely new to Scala, and I realize my syntax might be completely wrong. I'm just trying to come up with a good design for this library before I start coding it. I'm willing to take suggestions for this, if I'm doing it the completely wrong way, or if there's a better way. The idea is that the API will take some sort of request object, use it to make a request in a thread via http, and when the response has been made, somehow signal back to the caller if the request was a success or an error. The request/error functions have to be executed on the main thread.

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• Why would ftp_connect() return false on production server if it works elsewhere for connecting to th

  - by letseatfood

  I have a script that uses ftp_connect() among other FTP PHP functions for uploading a file. ftp_connect() works when executed on my local development server for connecting to a remote FTP server. The same script, when executed on the remote server does not work for connecting to the exact same FTP server. Could somebody please point me in the right direction? Thanks! Here is the code: error_reporting(E_ERROR | E_WARNING | E_PARSE); $server = 'ftp.someserver.com'; $ftpConn = ftp_connect($server); if(!$ftpConn) echo 'failed'; else echo 'success'; No errors are reported.

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• Setting creation or change timestamps

  - by Thanatos

  Using utimes, futimes, futimens, etc., it is possible to set the access and modification timestamps on a file. Is there a function to set change timestamps? (I understand the cyclic nature of wanting to change the change timestamp, but think archiving software - it would be nice to restore a file exactly as it was.) Are there any functions at all for creation timestamps? (I realize that ext2 does not support this, but I was wondering if Linux did, for those filesystems that do support it.) If it's not possible, what is the reasoning behind it not being so?

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• Best practices for handling string in VC++?

  - by Hiren Gujarati

  As I am new to Visual C++, there are so many types for handling string. When I use some type and go ahead with coding but on next step, there are in-build functions that use other types & it always require to convert one type of string to other. I found so many blogs but so confused when see so many answers & try but some are working & some are not. Please give your answer or links that gives ultimate solution for handling different types of strings in visual c++.

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• Wordpress Custom Themes > How to script Categories, Tags and Excerpt options to appear on "page" edi

  - by Scott B

  I'm using custom WordPress categories for some probably unintended functions, I will admit (things like marking a post no/index just by adding it to my custom "no-index" category, etc). But it sucks that WordPress does not enable pages with all the little extras you get with posts. For example, while the post editor gives you convenient access to Tags, Categories, and a Post excerpt field, pages get left out in the cold. I'd like to know if its possible to add the These items to the Post editor via add_action() directive from a custom theme.

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• Webservice and ORM Framework?

  - by Sebastian

  Does anybody know a good web framework that includes an ORM mapper and allows straight forward implementation of web services? I'm looking for a framework written in PHP or C++. I'm looking for the following features (not all of them required, some will do nicely) data definition in one place used by database and web service WSDL generation XML output/JSON output boilerplate code generation So what I would like is a framework that let's me specify the objects, the web service functions on those objects and then generate everything that is required leaving me to fill the business logic (connecting the database to the web service). Anything like that out there? Background information for why I need this: I'm looking into creating a web project: the client is a rich web application that fetches all its data using AJAX. It will be completely custom made using only a low level javascript library. The server back end is supposed to serve static content and javascript (basically the rich web application) and to provide a RESTful web service API (which I would like to implement using aforementioned framework).

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• python: strange behavior about exec statement

  - by ifocus

  exec statement: exec code [ in globals[, locals]] When I execute the following code in python, the result really confused me. Some of the variables were setup into the globals, some were setup into the locals. s = """ # test var define int_v1 = 1 list_v1 = [1, 2, 3] dict_v1 = {1: 'hello', 2:'world', 3:'!'} # test built-in function list_v2 = [float(x) for x in list_v1] len_list_v1 = len(list_v1) # test function define def func(): global g_var, list_v1, dict_v1 print 'access var in globals:' print g_var print 'access var in locals:' for x in list_v1: print dict_v1[x] """ g = {'__builtins__': __builtins__, 'g_var': 'global'} l = {} exec s in g, l print 'globals:', g print 'locals:', l exec 'func()' in g, l the result in python2.6.5: globals: {'__builtins__': <module '__builtin__' (built-in)>, 'dict_v1': {1: 'hello', 2: 'world', 3: '!'}, 'g_var': 'global', 'list_v1': [1, 2, 3]} locals: {'int_v1': 1, 'func': <function func at 0x00ACA270>, 'x': 3, 'len_list_v1': 3, 'list_v2': [1.0, 2.0, 3.0]} access var in globals: global access var in locals: hello world ! And if I want to setup all variables and functions into the locals, and keep the rights of accessing the globals. How to do ?

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• Generating random numbers in C

  - by moonstruckhorrors

  While searching for Tutorials on generating random numbers in C I found This Topic When I try to use the rand() function with parameters, I always get the random number generated 0. When I try to use the rand() function with parameters, I always get the value 41. And whenever I try to use arc4random() and random() functions, I get a LNK2019 error. Here's what I'm doing: #include <stdlib.h> int main() { int x; x = rand(6); printf("%d", x); } This code always generate 41. Where am I going wrong?? P.S. : I'm running Windows XP SP3 and using VS2010 Command Prompt as compiler. P.P.S. : Took me 15 minutes to learn how to format properly.

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• Programming for a 32-bit environment vs programming for a 64-bit environment / Build configurations

  - by Russel

  I was looking at some same code (a sample MS Visual Studio C++ project) recently with multiple build configurations (Release/Debug, Win32/x64). My question: What is the difference? I guess I understand Release/Debug (Release = finalized version of project, Debug = version used to run in debugger), but what things need to be considered when building different versions for Win32/x64 platforms? Is there any coding differences, or does this just affect how that same code is ultimately built into machine code? I know there are different library files depending on whether you're using a 32-bit or 64-bit system as well... Are all of these differences again just machine code? Would a 32-bit library file and its corresponding 64-bit library file be two files with exactly the same functions build from the same source code originally, and only differing in their machine code implementation? Thanks! --Russel

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• Python ctypes argument errors

  - by Patrick Moriarty

  Hello. I wrote a test dll in C++ to make sure things work before I start using a more important dll that I need. Basically it takes two doubles and adds them, then returns the result. I've been playing around and with other test functions I've gotten returns to work, I just can't pass an argument due to errors. My code is: import ctypes import string nDLL = ctypes.WinDLL('test.dll') func = nDLL['haloshg_add'] func.restype = ctypes.c_double func.argtypes = (ctypes.c_double,ctypes.c_double) print(func(5.0,5.0)) It returns the error for the line that called "func": ValueError: Procedure probably called with too many arguments (8 bytes in excess) What am I doing wrong? Thanks.

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• jquery trigger hover on anchor

  - by Ori Gavriel Refael

  im using jqurey to develop in web enviorment. i want to know why $("#a#trigger").trigger('mouseenter'); $("#a#trigger").trigger('hover'); $("#a#trigger").trigger('mouseover'); all 3 of those aren't working to active a hover function i have. $(function() { $('a#trigger').hover(function(e) { $('div#pop-up').show(); }, function() { $('div#pop-up').hide(); }); }); }); a#trigger is the name of the anchor, and #pop-up is a div element in my web. problem is, that i want to mouse over some event in FullCalendar plugin and those functions aint working. Thanks.

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• Strange findFn malfunction

  - by gd047

  I noticed a strange malfunction in using findFn function (library sos) and I can't find out the source. While it works fine on my Windows XP pc, it does not on my Vista one. library (sos) findFn("randomization test") # in both finds 72 results findFn("{randomization test}") # In XP finds 19 or about so, but in Vista whenever I use {} and more than one word inside, # I keep getting the following: found 0 matches x has zero rows; nothing to display. Warning message: In findFn("{randomization test}") : HIT not found in HTML; processing one page only. R ver = 2.10.1 and packages updated. Any ideas where the problem might be? Bonus: As it's obvious, I was looking for functions about tests for randomized experiments

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• Looking for a C# code parser

  - by Blindy

  I'm looking for a set of classes (preferably in the .net framework) that will parse C# code and return a list of functions with parameters, classes with their methods, properties etc. Ideally it would provide all that's needed to build my own intellisense. I have a feeling something like this should be in the .net framework, given all the reflection stuff they offer, but if not then an open source alternative is good enough. What I'm trying to build is basically something like Snippet Compiler, but with a twist. I'm trying to figure out how to get the code dom first. I tried googling for this but I'm not sure what the correct term for this is so I came up empty.

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• Finding many local max in an image (using MatLab)

  - by wenh42

  How do you go about figuring our multiple max in a 2D image where the max aren't necessarily all the same height? I have found that the imregionalmax(), imextendedmax(), and findpeaks() functions aren't necessarily that helpful because they give many local max that are really just maxes within the background noise. I tried bw=arrayimdilate(array,[1 1 1; 1 0 1; 1 1 1]) but that also is kind of limited for the same reasons (same thing with expanding the matrix that it uses). I'd definitely appreciate some help..

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• What does static linking against a library actually do?

  - by Salgar

  Say I had a library called libfoo which contained a class, a few static variables, possibly something with 'C' linkage, and a few other functions. Now I have a main program which looks like this: int main() { return 5+5; } When I compile and link this, I link against libfoo. Will this have any effect? Will my executable increase in size? If so, why? Do the static variables or their addresses get copied into my executable? Apologies if there is a similar question to this or if I'm being particularly stupid in any way.

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• Programmatically changing code files

  - by Carra

  I'm changing our webservices to an async model. And for that I have to change over a hundred methods. Doing it manually is one (unappealing) option. Is there no way to programmatically parse & change multiple functions/code files? Example: [Webmethod] public void MyWebservice (string parameter1, string parameter2, string parameter3) { //Logic here } And change this to: public void InternalMyWebservice (string parameter1, string parameter2, string parameter3, AsyncCallback callback) { //Logic here } [Webmethod] public void BeginMyWebservice (string parameter1, string parameter2, string parameter3, AsyncCallback callback, object asyncState) { //Queue InternalMyWebservice in a threadpool } public void EndMyWebservice(IAsyncResult asyncResult) { //Set return values } It's basically the same thing I have to do for each webservice. Change the name to "InternalX", add a parameter and create the begin & end method.

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• Set a js variable in a html include

  - by user102533

  I have a ASP.NET page that uses the include method for header. I am adding a JS variable that I access from JS functions In head.htm <script language="javascript" type="text/javascript"> var render=<%= RenderProperty %>; </script> The RenderProperty is a method in the base page class (a .cs file that inherits from System.Web.UI.Page) It looks something like this: private bool _renderProp = false; public bool RenderProperty { get { return _renderProp; } set { _renderProp = value; } } On a page by page basis, I set the RenderProperty in the Page_Load of a aspx page protected void Page_Load(object sender, EventArgs e) { RenderProperty = true; } I get a compile time error that says: The name 'RenderProperty' does not exist in the current context C:\...\head.htm

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• Why my print current date time (C language) gives different answer

  - by vodkhang

  I want to get the current date (day, mon and year). I found out there are some functions in C to do that like ctime (get the string of time), localtime and gmtime. I tried with following code but the output are different. I get this output: The date and time is Tue Apr 20 2010 (which is correct) The year is : 110 The year is : 110. Does anybody know why? int main(int argc, char** argv) { time_t now; if((now = time(NULL)) == (time_t)-1) { puts("Failure in getting time"); } else { printf("The date and time is: %s\n", ctime(&now)); printf("The year is: %ld\n", localtime(&now)->tm_year); printf("The year is: %ld\n", gmtime(&now)->tm_year); } getchar(); }

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• sqlplus remove \r \n \t from spool

  - by Tom

  Hi all, Is there any sql*plus command to remove \r \n and\t from the result set that's going out to the spool file? That is, "trim" every record? We've used set trim on in the past, but it doesn't seem to bue what we need right now. I'm trying to avoid calling oracle's translate, chr functions in the sql query. For example, If my query returns this |DATA| |\n \t\t\t\t\t thisistheactualdata \t\t\t\t\t\t\n| I'd like to keep this |DATA| |thisistheactualdata| Thanks in advance.

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