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• Launch Activity with Intent Filter on Right Time

  - by user511853

  Hi. I want to launch my own media player application when I want to watch a video from Youtube. When I write android:scheme="http" and android:host="m.youtube.com" it is OK. But, it asks everywhere in m.youtube.com to open my app. So, it gets annoying. I tried to use pathPattern, pathPrefix and path to solve this but I didn't get ahead. All I want is clearly this: When the link is like "http://m.youtube.com/index?desktop_uri=%2F%gl=US#" the intent filter shouldn't launch my app. When the link is like "http://m.youtube.com/index?desktop_uri=%2F&gl=US#/watch?xl=xl_blazer&v=k3Cdqx1qFX8" my application should be launched. Is there anyone that can help me?

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• Filter condition not working properly on list (C#3.0)

  - by Newbie

  I have a datatable that has many NULL or " " strings. Next I am type casting the DataTable to a list . Now if I want to filter those conditions on this list and get the resultant value(without NULL or String.Empty or " " records) what should I do? My code DataTableExtensions.AsEnumerable(dt).ToList().ForEach(i => { if (i[0] != null) { if ((i[0].ToString() != string.Empty)|| (i[0].ToString() != " ")) { list = dt.AsEnumerable().ToList(); } } }); But I am getting all the records. It is not getting filtered. Using C#3.0 Please help Thanks

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• Animate search filter results - flex

  - by Adam

  I've created a search with a couple of comboboxes that allow users to filter their search results. The results are currently using a TileList & itemRenderer to display, and now I'd like to add an animation effect when the user filters their results. I know that you can use the itemsChangeEffect to create an animation effect when the user drags and moves result itmes. So I'd like to know if there's a way to create a similar effect triggered by the filtering on the comboboxes? Thanks.

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• filter queryset based on list, including None

  - by jujule

  Hi all I dont know if its a django bug or a feature but i have a strange ORM behaviour with MySQL. class Status(models.Model): name = models.CharField(max_length = 50) class Article(models.Model) status = models.ForeignKey(status, blank = True, null=True) filters = Q(status__in =[0, 1,2] ) | Q(status=None) items = Article.objects.filter(filters) this returns Article items but some have other status than requested [0,1,2,None] looking at the sql query : SELECT [..] FROM `app_article` LEFT OUTER JOIN `app_status` ON (`app_article`.`status_id` = `app_status`.`id`) WHERE (`app_article`.`status_id` IN (1, 2) OR `app_status`.`id` IS NULL) ORDER BY [...] the OR app_status.id IS NULL part seems to be the cause. if i change it to OR app_article.status_id IS NULL it works correctly. How to deal with this ? Thanx.

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• 3x3 Average filter in matlab

  - by turingcomplete

  I've written code to smooth an image using a 3x3 averaging filter, however the output is strange, it is almost all black. Here's my code. function [filtered_img] = average_filter(noisy_img) [m,n] = size(noisy_img); filtered_img = zeros(m,n); for i = 1:m-2 for j = 1:n-2 sum = 0; for k = i:i+2 for l = j:j+2 sum = sum+noisy_img(k,l); end end filtered_img(i+1,j+1) = sum/9.0; end end end I call the function as follows: img=imread('img.bmp'); filtered = average_filter(img); imshow(uint8(filtered)); I can't see anything wrong in the code logic so far, I'd appreciate it if someone can spot the problem.

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• How do I use a named_scope to filter records in my model

  - by kibyegon

  I have a model "Product" with a "description" field. Now I want to have a link in the index page that when clicked will show all products where the description is blank (empty). In the model I have defined a named_scope like this named_scope :no_description, :conditions => { :description => "" } I have checked that the named_scope works by calling Product.no_description.count on the console. As far as I know, the controller is then supposed to handle the filter request from the link on the "index" action but be able to distinguish it from the default which is view all products. def index @products = Product.all ... My problem is getting the controller handle the different request, what route to setup for the link on the view and the actual link on the view. Hope I explained my problem.

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• Multiple dropdowns, combination check and filter

  - by Tom

  Using Javascript / jQuery, I'm trying to build a "combination checker" that will take the values of three (but can be more) dropdown lists and filter the options based on a supplied list of allowed combinations. For example: DROPDOWNS Field 1: - value_1 - value_2 Field 2: - value_3 Field 3: - value_4 - value_5 COMBINATIONS - value_1, value_3, value_5 - value_1, value_3, value_4 - value_2, value_3, value_5 When a user selects Field 3 - value_4, the unavailable options will be disabled - ie, Field 1 - value_2 (there is no combination that allows value_2 and value_4 to be selected together). It would be really great if someone could provide some pointers on how this can be achieved or just provide a fresh perspective - I'm going round in circles on this one!

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• Using Linq to filter parents by their children

  - by Nick L

  Having some problems with my Silverlight app (with RIA services) filtering my results. The idea is on the client I set up the EntityQuery and its filters and call load. However this isn't working for me. Heres my code. public void FireQuery(string filterValue) { EntityQuery<Parent> query = m_ParentDomainContext.GetParentQuery(); query = query.Where(p => p.Children.Any(c => c.Name.Contains(filterValue))); m_ParentDomainContext.Load(query, Query_Completed, null); } Compiles just fine, however, runtime I get "Query operator 'Any' is not supported." Exception. Does anyone know of a good way to filter like this? Again, I'm looking for a way to set this up on the client.

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• PHP/MySQL - an array filter for bots

  - by Mike

  Hello, I'm making a hit counter. I have a database and I store the IP and $_SERVER['HTTP_USER_AGENT']; of the visitors. Now I need to add a filter, so I can put away the hits, that are made by bots. I found out, that many bots usually keep some common words in the $_SERVER['HTTP_USER_AGENT']; , so I's like to make and array of words, that would keep the bot from displaying in the results. Here is what I have now: while($row = mysql_fetch_array($yesterday, MYSQL_ASSOC)) { <-- Here I need a code, that would run through an array and check, if it containts the keywords and if it doesn't ... just count++; -- } Also if you know any other way of detecting and removing the bots from the results, I'd be verry thankful. Cheers

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• Using LINQ to filter rows of a matrix based on inclusion in an array

  - by Bob Feng

  I have a matrix, IEnumerable<IEnumerable<int>> matrix, for example: { {10,23,16,20,2,4}, {22,13,1,33,21,11 }, {7,19,31,12,6,22}, ... } and another array: int[] arr={ 10, 23, 16, 20} I want to filter the matrix on the condition that I group all rows of the matrix which contain the same number of elements from arr. That is to say the first row in the matrix {10,23,16,20,2,4} has 4 numbers from arr, this array should be grouped with the rest of the rows with 4 numbers from arr. better to use linq, thank you very much!

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• Filter Phrase Query

  - by alsuelo

  I try to filter a phrase to make a search in my website i've this query, this code working with one word but when i type wit more than one isn't working becuase the print is without spaces. $phrase = $this->getState($this->context.".filter_phrase"); printf("Original string: %s\n", $phrase); if(!empty($phrase)) { $escaped = $db->escape($phrase, true); printf("Escaped string: %s\n", $escaped); $quoted = $db->quote("%" . $escaped . "%" , false); $query->where ('a.title LIKE ' .$quoted); } Example i type king and the output is king , when i type the king the output is theking, i want to know if exist any way to conserve the blank spaces.

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• jQuery filter selector, is this right?

  - by fire

  It seems to work ok but I don't know if this can be impoved on or not. I want to select any HTML tag that has a class of edit-text-NUM or edit-html-NUM and change the color of it. Here is what I am using... jQuery(document).ready(function(){ jQuery('*') .filter(function() { return this.className.match(/edit-(text|html)-\d/); }) .css({ 'color': '#ff0000' }); }); Does that look ok and is the regex ok? *edit: Also is this efficient? I am aware that using jQuery('*') might be a bit of a hog if it's a large page. It only has to work from <body> down so maybe it could be changed?

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• how to filter in sql

  - by user3634746

  good day i have a database containing time in and time out and i want to filter all the record of the employees time in and time out. here is my sample db using php and mysql PersonalId LogCount LogDate LogType LogKind 2 1 2014-04-09 12:42:24 0 0 2 1 2014-04-10 12:43:53 1 0 2 1 2014-04-11 02:17:39 0 0 2 2 2014-04-09 12:42:48 1 0 3 2 2014-04-10 12:44:14 0 0 3 2 2014-04-11 02:48:54 1 0 3 3 2014-04-09 12:43:23 0 0 3 3 2014-04-09 12:43:23 1 0 0 in log type is =login 1 in log type is =login this will be the format emp id IN OUT HOURS 2 6/2/2014 8:15 6/2/2014 17:00 7.25 2 6/2/2014 8:15 6/2/2014 17:00 7.25 thanks for your help

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• Trouble determining proper decoding of a REST response from an ArcGIS REST service using IHttpModule

  - by Ryan Taylor

  First a little background on what I am trying to achieve. I have an application that is utilizing REST services served by ArcGIS Server and IIS7. The REST services return data in one of several different formats. I am requesting a JSON response. I want to be able to modify the response (remove or add parameters) before the response is sent to the client. However, I am having difficulty converting the stream to a string that I can modify. To that end, I have implemented the following code in order to try to inspect the stream. SecureModule.cs using System; using System.Web; namespace SecureModuleTest { public class SecureModule : IHttpModule { public void Init(HttpApplication context) { context.BeginRequest += new EventHandler(OnBeginRequest); } public void Dispose() { } public void OnBeginRequest(object sender, EventArgs e) { HttpApplication application = (HttpApplication) sender; HttpContext context = application.Context; HttpRequest request = context.Request; HttpResponse response = context.Response; response.Filter = new ServicesFilter(response.Filter); } } } ServicesFilter.cs using System; using System.IO; using System.Text; namespace SecureModuleTest { class ServicesFilter : MemoryStream { private readonly Stream _outputStream; private StringBuilder _content; public ServicesFilter(Stream output) { _outputStream = output; _content = new StringBuilder(); } public override void Write(byte[] buffer, int offset, int count) { _content.Append(Encoding.UTF8.GetString(buffer, offset, count)); using (TextWriter textWriter = new StreamWriter(@"C:\temp\content.txt", true)) { textWriter.WriteLine(String.Format("Buffer: {0}", _content.ToString())); textWriter.WriteLine(String.Format("Length: {0}", buffer.Length)); textWriter.WriteLine(String.Format("Offset: {0}", offset)); textWriter.WriteLine(String.Format("Count: {0}", count)); textWriter.WriteLine(""); textWriter.Close(); } // Modify response _outputStream.Write(buffer, offset, count); } } } The module is installed in the /ArcGIS/rest/ virtual directory and is executed via the following GET request. http://localhost/ArcGIS/rest/services/?f=json&pretty=true The web page displays the expected response, however, the text file tells a very different (encoded?) story. Expect Response {"currentVersion" : "10.0", "folders" : [], "services" : [ ] } Text File Contents Buffer: ? ?`I?%&/m?{J?J??t??`$?@??????iG#)?*??eVe]f@????{???{???;?N'????\fdl??J??!????~|?"~?G?u]???'?)??G?????G??7N????W??{?????,??|?OR????q? Length: 4096 Offset: 0 Count: 168 Buffer: ? ?`I?%&/m?{J?J??t??`$?@??????iG#)?*??eVe]f@????{???{???;?N'????\fdl??J??!????~|?"~?G?u]???'?)??G?????G??7N????W??{?????,??|?OR????q?K???!P Length: 4096 Offset: 0 Count: 11 Interestingly, Fiddler depicts a similar picture. Fiddler Request GET http://localhost/ArcGIS/rest/services/?f=json&pretty=true HTTP/1.1 Host: localhost Connection: keep-alive User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US) AppleWebKit/533.4 (KHTML, like Gecko) Chrome/5.0.375.70 Safari/533.4 Referer: http://localhost/ArcGIS/rest/services Cache-Control: no-cache Pragma: no-cache Accept: application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5 Accept-Encoding: gzip,deflate,sdch Accept-Language: en-US,en;q=0.8 Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.3 Cookie: a=mWz_JFOusuGPnS3w5xx1BSUuyKGB3YZo92Dy2SUntP2MFWa8MaVq6a4I_IYBLKuefXDZANQMeqvxdGBgQoqTKz__V5EQLHwxmKlUNsaK7do. Fiddler Response - Before Clicking Decode HTTP/1.1 200 OK Content-Type: text/plain;charset=utf-8 Content-Encoding: gzip ETag: 719143506 Server: Microsoft-IIS/7.5 X-Powered-By: ASP.NET Date: Thu, 10 Jun 2010 01:08:43 GMT Content-Length: 179 ????????`I?%&/m?{J?J??t??`$?@??????iG#)?*??eVe]f@????{???{???;?N'????\fdl??J??!????~|?"~?G?u]???'?)??G?????G??7N????W??{?????,??|?OR????q?K???! P??? Fiddler Response - After Clicking Decode HTTP/1.1 200 OK Content-Type: text/plain;charset=utf-8 ETag: 719143506 Server: Microsoft-IIS/7.5 X-Powered-By: ASP.NET Date: Thu, 10 Jun 2010 01:08:43 GMT Content-Length: 80 {"currentVersion" : "10.0", "folders" : [], "services" : [ ] } I think that the problem may be a result of compression and/or chunking of data (this might be why I am receiving two calls to ServicesFilter.Write(...), however, I have not yet been able to solve the issue. How might I decode, unzip, and otherwise convert the byte stream into the string I know it should be for modification by my filter?

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• Servlet response wrapper has encoding problem

  - by John O

  A servlet response wrapper is being used in a Servlet Filter. The idea is that the response is manipulated, with a 'nonce' value being injected into forms, as part of defence against CSRF attacks. The web app is using UTF-8 everywhere. When the Servlet Filter is absent, no problems. When the filter is added, encoding issues occur. (It seems as if the response is reverting to 8859-1.) The guts of the code : final class CsrfResponseWrapper extends AbstractResponseWrapper { ... byte[] modifyResponse(byte[] aInputResponse){ ... String originalInput = new String(aInputResponse, encoding); String modifiedResult = addHiddenParamToPostedForms(originalInput); result = modifiedResult.getBytes(encoding); ... } ... } As I understand it, the transition between byte-land and String-land should specify an encoding. That is done here, as you can see, in two places. The value of the 'encoding' variable is 'UTF-8'; the alteration of the String itself is standard string manipulation (with a regex), and never specifies an encoding (addHiddenParamToPostedForms). Where am I in error about the encoding? EDIT: Here is the base class (sorry it's rather long): package hirondelle.web4j.security; import javax.servlet.ServletOutputStream; import javax.servlet.ServletResponse; import javax.servlet.http.HttpServletResponse; import javax.servlet.http.HttpServletResponseWrapper; import java.io.ByteArrayOutputStream; import java.io.IOException; import java.io.PrintWriter; /** Abstract Base Class for altering response content. (May be useful in future contexts as well. For now, keep package-private.) */ abstract class AbstractResponseWrapper extends HttpServletResponseWrapper { AbstractResponseWrapper(ServletResponse aServletResponse) throws IOException { super((HttpServletResponse)aServletResponse); fOutputStream = new ModifiedOutputStream(aServletResponse.getOutputStream()); fWriter = new PrintWriter(fOutputStream); } /** Return the modified response. */ abstract byte[] modifyResponse(byte[] aInputResponse); /** Standard servlet method. */ public final ServletOutputStream getOutputStream() { //fLogger.fine("Modified Response : Getting output stream."); if ( fWriterReturned ) { throw new IllegalStateException(); } fOutputStreamReturned = true; return fOutputStream; } /** Standard servlet method. */ public final PrintWriter getWriter() { //fLogger.fine("Modified Response : Getting writer."); if ( fOutputStreamReturned ) { throw new IllegalStateException(); } fWriterReturned = true; return fWriter; } // PRIVATE /* Well-behaved servlets return either an OutputStream or a PrintWriter, but not both. */ private PrintWriter fWriter; private ModifiedOutputStream fOutputStream; /* These items are used to implement conformance to the javadoc for ServletResponse, regarding exceptions being thrown. */ private boolean fWriterReturned; private boolean fOutputStreamReturned; /** Modified low level output stream. */ private class ModifiedOutputStream extends ServletOutputStream { public ModifiedOutputStream(ServletOutputStream aOutputStream) { fServletOutputStream = aOutputStream; fBuffer = new ByteArrayOutputStream(); } /** Must be implemented to make this class concrete. */ public void write(int aByte) { fBuffer.write(aByte); } public void close() throws IOException { if ( !fIsClosed ){ processStream(); fServletOutputStream.close(); fIsClosed = true; } } public void flush() throws IOException { if ( fBuffer.size() != 0 ){ if ( !fIsClosed ) { processStream(); fBuffer = new ByteArrayOutputStream(); } } } /** Perform the core processing, by calling the abstract method. */ public void processStream() throws IOException { fServletOutputStream.write(modifyResponse(fBuffer.toByteArray())); fServletOutputStream.flush(); } // PRIVATE // private ServletOutputStream fServletOutputStream; private ByteArrayOutputStream fBuffer; /** Tracks if this stream has been closed. */ private boolean fIsClosed = false; } }

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• Is a 2006 Mac Mini's processor upgradeable to a Core 2 Duo?

  - by chiurox

  I have a Mac Mini with Core Solo 1.5GHz, 512mb RAM, 60gb HDD, etc... I know, it's very old but since it's lying around here, I wanted to bump it up for general usage and some experimental iPhone development. Also, Snow Leopard can't be installed as it doesn't have enough RAM. I browsed around but I'm not sure if this Mac Mini's motherboard accepts a Core2Duo (at least a 2.0GHz). If anyone could inform me which generation of Core2Duo it still accepts, I'd be grateful.

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• Is a 2006 Mac Mini’s processor upgradeable to a Core 2 Duo?

  - by chiurox

  I have a Mac Mini with Core Solo 1.5GHz, 512mb RAM, 60gb HDD, etc... I know, it's very old but since it's lying around here, I wanted to bump it up for general usage and some experimental iPhone development. Also, Snow Leopard can't be installed as it doesn't have enough RAM. I browsed around but I'm not sure if this Mac Mini's motherboard accepts a Core2Duo (at least a 2.0GHz). If anyone could inform me which generation of Core2Duo it still accepts, I'd be grateful.

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• datagrid filter in c# using sql server

  - by malou17

  How to filter data in datagrid for example if u select the combo box in student number then input 1001 in the text field...all records in 1001 will appear in datagrid.....we are using sql server private void button2_Click(object sender, EventArgs e) { if (cbofilter.SelectedIndex == 0) { string sql; SqlConnection conn = new SqlConnection(); conn.ConnectionString = "Server= " + Environment.MachineName.ToString() + @"\; Initial Catalog=TEST;Integrated Security = true"; SqlDataAdapter da = new SqlDataAdapter(); DataSet ds1 = new DataSet(); ds1 = DBConn.getStudentDetails("sp_RetrieveSTUDNO"); sql = "Select * from Test where STUDNO like '" + txtvalue.Text + "'"; SqlCommand cmd = new SqlCommand(sql, conn); cmd.CommandType = CommandType.Text; da.SelectCommand = cmd; da.Fill(ds1); dbgStudentDetails.DataSource = ds1; dbgStudentDetails.DataMember = ds1.Tables[0].TableName; dbgStudentDetails.Refresh(); } else if (cbofilter.SelectedIndex == 1) { //string sql; //SqlConnection conn = new SqlConnection(); //conn.ConnectionString = "Server= " + Environment.MachineName.ToString() + @"\; Initial Catalog=TEST;Integrated Security = true"; //SqlDataAdapter da = new SqlDataAdapter(); //DataSet ds1 = new DataSet(); //ds1 = DBConn.getStudentDetails("sp_RetrieveSTUDNO"); //sql = "Select * from Test where Name like '" + txtvalue.Text + "'"; //SqlCommand cmd = new SqlCommand(sql,conn); //cmd.CommandType = CommandType.Text; //da.SelectCommand = cmd; //da.Fill(ds1); // dbgStudentDetails.DataSource = ds1; //dbgStudentDetails.DataMember = ds1.Tables[0].TableName; //ds.Tables[0].DefaultView.RowFilter = "Studno = + txtvalue.text + "; dbgStudentDetails.DataSource = ds.Tables[0]; dbgStudentDetails.Refresh(); } }

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• Django: Complex filter parameters or...?

  - by minder

  This question is connected to my other question but I changed the logic a bit. I have models like this: from django.contrib.auth.models import Group class Category(models.Model): (...) editors = ForeignKey(Group) class Entry(models.Model): (...) category = ForeignKey(Category) Now let's say User logs into admin panel and wants to change an Entry. How do I limit the list of Entries only to those, he has the right to edit? I mean: How can I list only those Entries which are assigned to a Category that in its "editors" field has one of the groups the User belongs to? What if User belongs to several groups? I still need to show all relevant Entries. I tried experimenting with changelist_view() and queryset() methods but this problem is a bit too complex for me. I'm also wondering if granular-permissions could help me with the task, but for now I have no clue. I came up only with this: First I get the list of all Groups the User belongs to. Then for each Group I get all connected Categories and then for each Category I get all Entries that belong to these Categories. Unfortunately I have no idea how to stitch everything together as filter() parameters to produce a nice single QuerySet.

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• How to write a decent process filter?

  - by konr

  Hi there, I'm building a program that communicates with Emacs, and one of the challenges I'm facing is writing Emacs's process filter function. Its input string is a series of s-expressions to be evaluated. Here is a sample: (gimme-append-to-buffer "25 - William Christie dir, Les Arts Florissants - Scene 2. Prelude - Les Arts Florissants\n") (gimme-append-to-buffer "26 - William Christie dir, Les Arts Florissants - Cybele: 'Je Veux Joindre' - Les Arts Florissants\n") (gimme-append-to-buffer "27 - William Christie dir, Les Arts Florissants - Scene 3. Cybele: 'Tu T'Etonnes, Melisse' - Les Arts Florissants\n") (gimme-append-to-buffer "28 - William Christie dir, Les Arts Florissants - Cybele: 'Que Les Plus Doux Zephyrs'. Scene 4. - Les Arts Florissants\n") (gimme-append-to-buffer "29 - William Christie dir, Les Arts Florissants - Entree Des Nations - Les Arts Florissants\n") (gimme-append-to-buffer "30 - William Christie dir, Les Arts Florissants - Entree Des Zephyrs - Les Arts Florissants\n") (gimme-append-to-buffer "31 - William Christie dir, Les Arts Florissants - Choeur Des Nations' 'Que Devant Vous' - Les Arts Florissants\n") (gimme-append-to-buffer "32 - William Christie dir, Les Arts Florissants - Atys: 'Indigne Que Je Suis' - Les Arts Florissants\n") (gimme-append-to-buffer "33 - William Christie dir, Les Arts Florissants - Reprise Du Choeur Des Nations : 'Que Devant Nous' - Les Arts Florissants\n") (gimme-append-to-buffer "34 - William Christie dir, Les Arts Flor*emphasized text*issants - Reprise De L'Air Des Zephyrs - Les Arts Florissants\n") The first problem that I've faced is that the string is somehow not fully formed when the function is so called, so writing something like (mapcar 'eval (format "(%s)" input-string)) won't work. To deal with this first problem, I was using a loop. The full function I wrote is: (defun eval-all-sexps (s) (loop for x = (ignore-errors (read-from-string s)) then (ignore-errors (read-from-string (substring s position))) while x summing (or (cdr x) 0) into position doing (eval (car x)))) Now the second problem that showed up is that the function is called twice with a somewhat large input, first with valid but partial content, then with what looks like pieces of the remaining data. To solve this problem, I'm considering using a junk variable to hold up what remains from a loop and then concatenating it to the input of the next call, but I was wondering if you guys have any other suggestions on how to deal with such a problem more elegantly. Thanks!

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• ASP.NET Emails blocked by Spam filter on Exchange

  - by Amadiere

  I'm trying to send an email via some C# ASP.NET code. This is being sent to our internal mailrelay server, with our standard "from" address (e.g. [email protected]). In some instances, this is getting through OK, in others, it's getting blocked by the Spam Filter. An example of our Web.config <mailSettings> <smtp from="[email protected]"> <network host="mailrelay.domain.com" defaultCredentials="true" /> </smtp> </mailSettings> I've spoken with our Exchange Server team and they inform me that on occasions, our mail looks sufficiently like spam and is automatically blocked. The algorithm appears to be points based and blocks on a score of 45. 20 points are instantly added because our system is not sending the hostname with the domain name suffixed. e.g. the server is hoping for myServerName.domain.com, but despite being part of that domain, the server is sending from myServerName. I've been asked to look at altering the EHLO string that is sent and/or influencing the host so that it is its fully qualified name. However, this makes little sense to me, and although I understand the concept of what I need to change - I don't know where to begin looking for the fix.

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• Filter entities that match all pairs

  - by Jon

  I have an entity (let's say Person) with a set of arbitrary attributes with a known subset of values. I need to search for all of these entities that match all my filter conditions. For example, my table structures look like this: Person: id | name 1 | John Doe 2 | Jane Roe 3 | John Smith Attribute: id | attr_name 1 | Sex 2 | Eye Color ValidValue: id | attr_id | value_name 1 | 1 | Male 2 | 1 | Female 3 | 2 | Blue 4 | 2 | Green 5 | 2 | Brown PersonAttributes id | person_id | attr_id | value_id 1 | 1 | 1 | 1 2 | 1 | 2 | 3 3 | 2 | 1 | 2 4 | 2 | 2 | 4 5 | 3 | 1 | 1 6 | 3 | 2 | 4 In JPA, I have entities built for all of these tables. What I'd like to do is perform a search for all entities matching a given set of attribute-value pairs. For instance, I'd like to be able to find all males (John Doe and John Smith), all people with green eyes (Jane Roe or John Smith), or all females with green eyes (Jane Roe). I see that I can already take advantage of the fact that I only really need to match on value_id, since that's already unique and tied to the attr_id. But where can I go from there?

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• How does MSN filter spam?

  - by Marius

  I am trying to create a newsletter for our business. The last few days have been spent testing, and one of things I have noticed is that MSN seemingly randomly filters out some of my test messages. This is super-frustrating. I like the PEAR Mail MIME-package, and have been using that. I may send one email from one of our servers, resulting in the message getting through, and in the next minute, the same message sent from our other server ends up in the junk folder. Then if I add an attachment to the email, and the same message passes though the filter from the server that was previously blocked. I think. What the ####? Is this like throwing a dice, without me having any control over what is trash, and what isn't? I have sent email from several servers, all of which are shared. But I am unsure this is the problem. The problem is that it is seemingly random how MSN filters email. Some emails get through, and some other don't for seemingly irrational reasons. I am running out of ideas, but I am not giving up. Therefore I am writing to you for HARDCORE technical info on how MSN filters spam.

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• Filter a date property between a begin and end Dates with JDOQL

  - by Sergio del Amo

  I want to code a function to get a list of Entry objects whose date field is between a beginPeriod and endPeriod I post below a code snippet which works with a HACK. I have to substract a day from the begin period date. It seems the condition great or equal does not work. Any idea why I have this issue? public static List<Entry> getEntries(Date beginPeriod, Date endPeriod) { /* TODO * The great or equal condition does not seem to work in the filter below * Substract a day and it seems to work */ Calendar calendar = Calendar.getInstance(); calendar.set(beginPeriod.getYear(), beginPeriod.getMonth(), beginPeriod.getDate() - 1); beginPeriod = calendar.getTime(); PersistenceManager pm = JdoUtil.getPm(); Query q = pm.newQuery(Entry.class); q.setFilter("this.date >= beginPeriodParam && this.date <= endPeriodParam"); q.declareParameters("java.util.Date beginPeriodParam, java.util.Date endPeriodParam"); List<Entry> entries = (List<Entry>) q.execute(beginPeriod,endPeriod); return entries; }

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• How can I filter these Django records?

  - by mipadi

  I have a set of Django models as shown in the following diagram (the names of the reverse relationships are shown in the yellow bubbles): In each relationship, a Person may have 0 or more of the items. Additionally, the slug field is (unfortunately) not unique; multiple Person records may have the same slug fields. Essentially these records are duplicates. I want to obtain a list of all records that meet the following criteria: All duplicate records (that is, having the same slug) with at least one Entry OR at least one Audio OR at least one Episode OR at least one Article. So far, I have the following query: Person.objects.values('slug').annotate(num_records=Count('slug')).filter(num_records__gt=1) This groups all records by slug, then adds a num_records attribute that says how many records have that slug, but the additional filtering is not performed (and I don't even know if this would work right anyway, since, given a set of duplicate records, one may have, e.g., and Entry and the other may have an Article). In a nutshell, I want to find all duplicate records and collapse them, along with their associated models, into one record. What's the best way to do this with Django?

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