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• Sorting downloads folder with bash script

  - by Marek

  I'm writing script for my own needs to sort Downloads folder on my mac in bash. I pass to the function parameters: source directory, destination directory and array of file extensions I want to move. My problem is that when function is in "find" line then it copies just one file with that extension but when I remove all variables and I put parameters directly then it works fine. What's going on ? function moveFaster(){ clear src=$1 dst=$2 typ=$3 if [ ! -d $dst ] then mkdir $dst fi for i in "${typ[@]}" do find $src -name "${i}" -exec mv {} ${dst} \; done }

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• Can't set default value of string property to "" in the Xcode CoreData model designer

  - by glenc

  I have an entity in my datamodel with a string property that is currently optional, and I'd like to convert this property to a required property with a default value of the empty string. As others have discovered, leaving the default value blank results in validation errors (since the designer interprets this as NULL), but trying '', "", or @"" as the default value results in those literal characters being interpreted as the default, rather than the empty zero-length string, as desired. I did find this thread on Google, however, apart from the solution being really ugly (model definition split between the .xcdatamodel and objc source), it also doesn't work for lightweight migrations because those migrations are done solely based on the .xcdatamodel files and the objc logic from your entity implementations isn't loaded. Is there any way to achieve this in the data model designer?

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• Extending Django-tagging, adding extra field to each tag?

  - by victorhooi

  heya, We're coding together a Django app to handle reviews of newspaper articles. Each newspaper article model will an arbitrary number of tags associated with it. Also, each tag will have an optional ranking (0 to 10). I was thinking of using django-tagging to do this (http://code.google.com/p/django-tagging/), but I'm not sure of the best way to add the ranking to the system. Should I extend django-tagging somehow? (Not sure if this is possible, without changing django-tagging's actual code?). Or is there a better way of achieving this? Cheers, Victor

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• asp.net mvc routing id parameter

  - by parminder

  Hi Experts, I am working on a website in asp.net mvc. I have a route routes.MapRoute( "Default", // Route name "{controller}/{action}/{id}", // URL with parameters new { controller = "Home", action = "Index", id = UrlParameter.Optional } // Parameter defaults ); which is the default route. Now I have method public ActionResult ErrorPage(int errorno) { return View(); } now if i want to run this code with http://something/mycontroller/Errorpage/1 it doesnt work. but if i change the parameter name to id from errorno it works. Is it cumpulsory to have same parameter name for this method. Or I need to create seperate routes for such situations. Regards Parminder

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• Receiving POST data in ASP.NET

  - by grast

  Hi, I want to use ASP for code generation in a C# desktop application. To achieve this, I set up a simple host (derived from System.MarshalByRefObject) that processes a System.Web.Hosting.SimpleWorkerRequest via HttpRuntime.ProcessRequest. This processes the ASPX script specified by the incoming request (using System.Net.HttpListener to wait for requests). The client-part is represented by a System.ComponentModel.BackgroundWorker that builds the System.Net.HttpWebRequest and receives the response from the server. A simplified version of my client-part-code looks like this: private void SendRequest(object sender, DoWorkEventArgs e) { // create request with GET parameter var uri = "http://localhost:9876/test.aspx?getTest=321"; var request = (HttpWebRequest)WebRequest.Create(uri); // append POST parameter request.Method = "POST"; request.ContentType = "application/x-www-form-urlencoded"; var postData = Encoding.Default.GetBytes("postTest=654"); var postDataStream = request.GetRequestStream(); postDataStream.Write(postData, 0, postData.Length); // send request, wait for response and store/print content using (var response = (HttpWebResponse)request.GetResponse()) { using (var reader = new StreamReader(response.GetResponseStream(), Encoding.UTF8)) { _processsedContent = reader.ReadToEnd(); Debug.Print(_processsedContent); } } } My server-part-code looks like this (without exception-handling etc.): public void ProcessRequests() { // HttpListener at http://localhost:9876/ var listener = SetupListener(); // SimpleHost created by ApplicationHost.CreateApplicationHost var host = SetupHost(); while (_running) { var context = listener.GetContext(); using (var writer = new StreamWriter(context.Response.OutputStream)) { // process ASP script and send response back to client host.ProcessRequest(GetPage(context), GetQuery(context), writer); } context.Response.Close(); } } So far all this works fine as long as I just use GET parameters. But when it comes to receiving POST data in my ASPX script I run into trouble. For testing I use the following script: // GET parameters are working: var getTest = Request.QueryString["getTest"]; Response.Write("getTest: " + getTest); // prints "getTest: 321" // don't know how to access POST parameters: var postTest1 = Request.Form["postTest"]; // Request.Form is empty?! Response.Write("postTest1: " + postTest1); // so this prints "postTest1: " var postTest2 = Request.Params["postTest"]; // Request.Params is empty?! Response.Write("postTest2: " + postTest2); // so this prints "postTest2: " It seems that the System.Web.HttpRequest object I'm dealing with in ASP does not contain any information about my POST parameter "postTest". I inspected it in debug mode and none of the members did contain neither the parameter-name "postTest" nor the parameter-value "654". I also tried the BinaryRead method of Request, but unfortunately it is empty. This corresponds to Request.InputStream==null and Request.ContentLength==0. And to make things really confusing the Request.HttpMethod member is set to "GET"?! To isolate the problem I tested the code by using a PHP script instead of the ASPX script. This is very simple: print_r($_GET); // prints all GET variables print_r($_POST); // prints all POST variables And the result is: Array ( [getTest] = 321 ) Array ( [postTest] = 654 ) So with the PHP script it works, I can access the POST data. Why does the ASPX script don't? What am I doing wrong? Is there a special accessor or method in the Response object? Can anyone give a hint or even know how to solve this? Thanks in advance.

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• Generate links for routes with non-parameter url segments on ASP.NET MVC 2

  - by spapaseit

  I have a route defined with several hardcoded (non-parameter) segments: routes.MapRoute(null, "suggestion/list/by/{tag}", new { controller = "Suggestion", action = "List", tag = UrlParameter.Optional }); Suppose I'm in the Index view of SuggestionController, which has a Suggestion object for Model, how can I create a link that matches that route? I'd rather use one of the provided helpers and keep the route name as null in order to avoid hard-coding to much on my views, but I can't figure out how to user these non-parameter segments in Html.ActionLink or RouteLink methods. I've even tried to render the link using plain ol' html <a href="/suggestion/list/by/<%=Model.Tag %>"><%=Model.Tag %></a> but this somehow didn't match the route either. There's probably a very simple solution and I might be over-complicating things in mi mind, but I'm at a loss. Any ideas? Thanks in advance.

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• Using XPath to access comments a flat hierachy

  - by Sebastian

  I have a given XML document (structure can not be changed) and want to get the comments that are written above the nodes. The document looks like this: <!--Some comment here--> <attribute name="Title">Book A</attribute> <attribute name="Author"> <value>Joe Doe</value> <value>John Miller</value> </attribute> <!--Some comment here--> <attribute name="Code">1</attribute> So comments are optional, but if there is one, I want to get the comment above each attribute. Using /*/comment()[n] would give me comment n, but for n=2 I would naturally get the comment of the third attribute, so there is no connection between attributes and comments Any ideas? Thanks

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• Advanced command line argument parsing in Java?

  - by Bishop87

  Does anyone have any java examples for parsing a series of command line arguements in a robust way? I'm looking to be able to handle something like: java myapp [-l language] [-d int] [-f file1 file2 file3] I want to do this in a robust way so I can provide logical error messages to the user if they mistake a command line-option. Some of these options I'd like to make optional, etc, etc. Also, the -f file list should be able to handle a list of files. Is there some library out there to assist me in handling this?

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• Regex: Matching a space-joined list of words, excluding last whitespace

  - by Jesper

  How would I match a space separated list of words followed by whitespace and some optional numbers? I have this: >>> import re >>> m = re.match('(?P<words>(\w+\s+)+)(?P<num>\d+)?\r\n', 'Foo Bar 12345\r\n') >>> m.groupdict() {'num': '12345', 'words': 'Foo Bar '} I'd like the words group to not include the last whitespace(s) but I can't figure this one out. I could do a .strip() on the result but that's not as much fun :) Some strings to test and wanted result: 'Foo & Bar 555\r\n' => {'num': '555', 'words': 'Foo & Bar'} 'Hello World\r\n' => {'num': None, 'words': 'Hello World'} 'Spam 99\r\n' => {'num': 99, 'words': 'Spam'} 'Number 1 666\r\n' => {'num': 666, 'words': 'Number 1'}

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• Regular Expressions, Checking for a range of occurrences

  - by gmcalab

  I have a phone number I want to match against a regular expression. The format of the phone number must match this: (123) 123-4567 x12345 The extension is optional. Also the extension must contain 1-5 numbers. Below is a regular expression I wrote that works. ^\(\d{3}\) \d{3}-\d{4}( x\d\d?\d?\d?\d?)?$ I was wondering if there is a better way to check for the extension instead of x\d\d?\d?\d?\d? Can I say 1-5 occurrences of \d instead of the above some how ?

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• Custom tool error: Command.proto:11:18: "Message2" is not defined.

  - by cornerback84

  I am using the latest version of protobuf-net with VS2008 integration. I have created 2 messages (Message1 and Message2), 1 message in 1 proto file. When I try to reference Message2 in Message1 the code generator tool gives me error "Message2" is not defined and won't generate the code file. The package for both messages is same. It look like that because of the integration of the tool with VS2008 it expects all the messages in same .proto file to compile. Currently I have to paste an empty message with same name in Message1.proto file, like this: message Message1 { optional Message2 message2 = 1; } message Message2 { } And then later on remove the declaration of class Message2 from Message1.cs. Are there any settings that I need to do so to avoid this error, or is providing an empty declaration the only way?

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• SQL Azure Federation - how much data before performance benefits?

  - by Donald Hughes

  To avoid premature optimization, I don't want to implement SQL Azure's Federation too early. Is there a rule of thumb for how much data a table would need to have before seeing performance benefits from sharding? I know there won't be a precise answer as there are too many variables to consider, especially with much of SQL Azure's resources being hidden/unknown. To put it into several, more concrete examples, would Federation improve performance in any of the below table scenarios: 100,000 rows (~ 200 MB) 1,000,000 rows (~ 2 GB) 10,000,000 rows (~ 20 GB) 100,000,000 rows (~ 200 GB) For the sake of elaboration, we can assume this is the largest table that would be federated, which consists of order details, which is joined to an orders table with a 'customer_id' foreign key, which would be the distribution key. This is a fairly standard multi-tenant, CRUD order entry system, with a typical assortment of reporting needs (customer order totals by day/month/year, etc).

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• Access the failing addresses within bounce_message_file in exim

  - by mkurz

  We are running exim version 4.72 I'm using bounce_message_file to customize our bounce messages, like desribed in the documentation Within this bounce message template I can access various variables like $message_exim_id, etc. Is there also a way to access the list of the failing addresses (maybe with their error messages) in such a variable (as string, list,... whatever) or in any other way? It does not really matter how and in which format they are, I just want access them within the bounce message template file. (I am referencing to the failed addresses usually listed automatically after the line "This is a permanent error. The following address(es) failed:") Thank you very much for your help!

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• How do I get the size of a response from a Spring 2.5 HTTP remoting call?

  - by aarestad

  I've been poking around the org.springframework.remoting.httpinvoker package in Spring 2.5 trying to find a way to get visibility into the size of the response, but I keep going around in circles. Via another question I saw here, I think what I want to do is get a handle on the InputStream that represents the response from the server, and then wrap it with an Apache commons-io CountingInputStream. What's the best way to go about doing this? For the moment, I'd be happy with just printing the size of the response to stdout, but eventually I want to store it in a well-known location in my app for optional display.

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• upload image during registration in asp.net

  - by Vikrant

  I am developing a student registration form in asp.net. there are two tables viz std_registration and gallery(having pic_id and pic_url). During registration, before the click of submit button i want to retrieve pic_id from gallery table and then pass it to the insert query of registration table. image upload is an optional part. if no image is uploaded i want a default image to get uploaded. pls help me on this. thanx.

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• How can I prevent MEF from throwing an exception when an Export is not found?

  - by Kilhoffer

  I have a class with an IList<T> property decorated with the [ImportMany(allowRecomposition = true)] attribute. There are some conditions in which the application might not find any available Exports of the requested type. Right now, it's throwing a CompositionException if no Exports of the requested type are found. I dislike application flow being determined by thrown exceptions, so I would rather not catch and react in this case. Rather, I just want program execution to continue. Is there a flag or something I can set to make this Import optional? I know for single import properties, you can do this: [Import(AllowDefault = true)] but 'AllowDefault' is not an option on the ImportMany attribute.

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• (PHP) User is being forced to RE-LOGIN after trying to do something on an admin page

  - by hatorade

  I have created an admin panel for a client in PHP, which requires a login. Here is the code at the top of the admin page requiring the user to be logged in: admin.php <?php session_start(); require("_lib/session_functions.php"); require("_lib/db.php"); db_connect(); //if the user has not logged in if(!isLoggedIn()) { header('Location: login_form.php'); die(); } ?> Obviously, the if statement is what catches them and forces them to log in. Here is the code on the resulting login page: login_form.php <form name="login" action="login.php" method="post"> Username: <input type="text" name="username" /> Password: <input type="password" name="password" /> <input type="submit" value="Login" /> </form> Which posts info to this controller page: login.php <?php session_start(); //must call session_start before using any $_SESSION variables include '_lib/session_functions.php'; $username = $_POST['username']; $password = $_POST['password']; include '_lib/db.php'; db_connect(); // Connect to the DB $username = mysql_real_escape_string($username); $query = "SELECT password, salt FROM users WHERE username = '$username';"; $result = mysql_query($query); if(mysql_num_rows($result) < 1) //no such user exists { header('Location: login_form.php?login=fail'); die(); } $userData = mysql_fetch_array($result, MYSQL_ASSOC); db_disconnect(); $hash = hash('sha256', $password . $userData['salt']); if($hash != $userData['password']) //incorrect password { header('Location: login_form.php?login=fail'); die(); } else { validateUser(); //sets the session data for this user } header('Location: admin.php'); ?> and the session functions page that provides login functions contains this: session_functions.php <?php function validateUser() { session_regenerate_id (); //this is a security measure $_SESSION['valid'] = 1; $_SESSION['userid'] = $username; } function isLoggedIn() { if($_SESSION['valid']) return true; return false; } function logout() { $_SESSION = array(); //destroy all of the session variables if (ini_get("session.use_cookies")) { $params = session_get_cookie_params(); setcookie(session_name(), '', time() - 42000, $params["path"], $params["domain"], $params["secure"], $params["httponly"] ); } session_destroy(); } ?> I grabbed the sessions_functions.php code of an online tutorial, so it could be suspicious. Any ideas why the user logs in to the admin panel, tries to do something, is forced to re-login, and THEN is allowed to do stuff like normal in the admin panel?

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• ISBNdb Retrieving and Managing Info

  - by Pierre Sylvestre

  Given a set of databases how can one you get information on a book with given price first (which consist of the average of a hidden list of prices coming from different web site) and followed by an optional second option that shows the list of the different web site with their page? To take an example given a query for ISBN 9785554443331 - it returns "Chemistry the central science 11 edition" : new:$50 used good condition:$35 used poor condition:$20 If the return does not match with our product list an option to "click here to visit our partner" appears and which returns: Atextbook: $10 Btextbook: $10 Ctextbook: $9 Dtextbook: $8.50 I understand that the first search would be done simultaneous on the web and our database to determine whether or not we have the book and the web to get the average of the price of a given list of web site. Thank you in advance for the help

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• JPA optimistic lock - setting @Version to entity class cause query to include VERSION as column

  - by masato-san

  I'm using JPA Toplink Essential, Netbean6.8, GlassFish v3 In my Entity class I added @Version annotation to enable optimistic locking at transaction commit however after I added the annotation, my query started including VERSION as column thus throwing SQL exception. None of this is mentioned in any tutorial I've seen so far. What could be wrong? Snippet public class MasatosanTest2 implements Serializable { private static final long serialVersionUID = 1L; @Id @Basic(optional = false) @Column(name = "id") private Integer id; @Column(name = "username") private String username; @Column(name = "note") private String note; //here adding Version @Version int version; query used: SELECT m FROM MasatosanTest2 m Internal Exception: com.microsoft.sqlserver.jdbc.SQLServerException Call: SELECT id, username, note, VERSION FROM MasatosanTest2

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• Tmux causes Emacs glitch

  - by killy9999

  Recently I started using Tmux, but I noticed that it causes a strange Emacs glitch. When I open source code for elisp or haskell, the comments aren't highlighted. Only the comment sign is (; in case of elisp, -- in case of haskell). The rest of the commented line is in normal colour. When I run Emacs outside of Tmux everything works as expected - the whole commented line is highlighted in a colour denoting a comment. Any ideas why this is happening? SOLUTION: Based on Stefan's comment I added this to my .emacs file: (custom-set-variables (custom-set-faces '(font-lock-comment-face ((((class color) (min-colors 8) (background dark)) (:foreground "red")))))) Now the comments are displayed in red, just like comment delimiters.

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• break dataframe into subsets by factor values, send to function that returns glm class, how to recom

  - by Alex Holcombe

  Thanks to Hadley's plyr package ddply function we can take a dataframe, break it down into subdataframes by factors, send each to a function, and then combine the function results for each subdataframe into a new dataframe. But what if the function returns an object of a class like glm or in my case, a c("glm", "lm"). Then, these can't be combined into a dataframe can they? I get this error instead Error in as.data.frame.default(x[[i]], optional = TRUE, stringsAsFactors = stringsAsFactors) : cannot coerce class 'c("glm", "lm")' into a data.frame Is there some more flexible data structure that will accommodate all the complex glm class results of my function calls, preserving the information regarding the dataframe subsets? Or should this be done in an entirely different way?

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• Mod rewrite with 3 parameters ?

  - by Axel

  Hello, I did tons of methods to figure out how to make this mod rewrite but i was completly unsuccessful. I want a .htaccess code that rewrite in the following method: http://www.mydomain.com/apple/upcoming/2 --- http://www.mydomain.com/handler.php?topic=apple&orderby=upcoming&page=2 This is easy to do, but the problem is that all parameters are not required so the link has different levels of parameters each time like this: http://www.mydomain.com/apple/popular/2 -- topic=apple&orderby=popular&page=2 http://www.mydomain.com/apple/2 -- topic=apple&orderby=&page=2 http://www.mydomain.com/all/popular/2 -- topic=all&orderby=popular&page=2 http://www.mydomain.com/apple/upcoming/ -- topic=apple&orderby=upcoming&page= So briefly, the url has 3 optional parameters in one static order: (topic) (orderby) (page) Note: the ORDERBY parameter can be "popular" or "upcoming" or nothing. Thanks

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• Bug in CF9: values for unique struct keys referenced and overwritten by other keys.

  - by Gin Doe

  We've run into a serious issue with CF9 wherein values for certain struct keys can be referenced by other keys, despite those other keys never being set. See the following examples: Edit: Looks like it isn't just something our servers ate. This is Adobe bug-track ticket 81884: http://cfbugs.adobe.com/cfbugreport/flexbugui/cfbugtracker/main.html#bugId=81884. <cfset a = { AO = "foo" } /> <cfset b = { AO = "foo", B0 = "bar" } /> <cfoutput> The following should throw an error. Instead both keys refer to the same value. <br />Struct a: <cfdump var="#a#" /> <br />a.AO: #a.AO# <br />a.B0: #a.B0# <hr /> The following should show a struct with 2 distinct keys and values. Instead it contains a single key, "AO", with a value of "bar". <br />Struct b: <cfdump var="#b#" /> This is obviously a complete show-stopper for us. I'd be curious to know if anyone has encountered this or can reproduce this in their environment. For us, it happens 100% of the time on Apache/CF9 running on Linux, both RH4 and RH5. We're using the default JRun install on Java 1.6.0_14. To see the extent of the problem, we ran a quick loop to find other naming sequences that are affected and found hundreds of matches for 2 letter key names. A similar loop found more conflicts in 3 letter names. <cfoutput>Testing a range of affected key combinations. This found hundreds of cases on our platform. Aborting after 50 here.</cfoutput> <cfscript> teststring = "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"; stringlen = len(teststring); matchesfound = 0; matches = ""; for (i1 = 1; i1 <= stringlen; i1++) { symbol1 = mid(teststring, i1, 1); for (i2 = 1; i2 <= stringlen; i2++) { teststruct = structnew(); symbol2 = mid(teststring, i2, 1); symbolwhole = symbol1 & symbol2; teststruct[ symbolwhole ] = "a string"; for (q1 = 1; q1 <= stringlen; q1++) { innersymbol1 = mid(teststring, q1, 1); for (q2 = 1; q2 <= stringlen; q2++) { innersymbol2 = mid(teststring, q2, 1); innersymbolwhole = innersymbol1 & innersymbol2; if ((i1 != q1 || i2 != q2) && structkeyexists(teststruct, innersymbolwhole)) { // another affected pair of keys! writeoutput ("<br />#symbolwhole# = #innersymbolwhole#"); if (matchesfound++ > 50) { // we've seen enough abort; } } } } } } </cfscript> And edit again: This doesn't just affect struct keys but names in the variables scope as well. At least the variables scope has the presence of mind to throw an error, "can't load a null": <cfset test_b0 = "foo" /> <cfset test_ao = "bar" /> <cfoutput> test_b0: #test_b0# <br />test_ao: #test_ao# </cfoutput>

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• Nginx Rate Limiting by Referrer?

  - by SteveEdson

  I've successfully set up rate limiting on IP addresses like so, limit_req_zone $binary_remote_addr zone=one:10m rate=1r/s; But I was wondering if its possible to do the same on referrers? For example, if a site gets placed in an iframe on a third party site, which generates too much traffic to handle. I can't find any nginx variables for the referrer anywhere. Is this possible? Or can the solution be achieved in a different way? Thanks.

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• What is the maximum length in seconds to store a value in memcache

  - by Emilien

  The Google App Engine memcache documentation states that the time parameter of memcache.set() is an "Optional expiration time, either relative number of seconds from current time (up to 1 month), or an absolute Unix epoch time." So I tried to set a value for 30 days, which according to Google is 2 592 000 seconds. However, I highly suspect that this value is too high, because the value was set (memcache.set() returned the value True), but a memcache.get() just after always returned None. Reducing this value to 1 728 000 seconds just worked fine/as expected. I guess that once passed the highest value, the time parameter gets interpreted as an absolute Unix epoch time. That would mean that 2 592 000 seconds got interpreted as "Sat, 31 Jan 1970 00:00:00 GMT", which is obviously a date in the past... So what is the highest value you can enter that will get interpreted as a number of seconds in the future?

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