Search Results

Search found 5843 results on 234 pages for 'material handling equipme'.

Page 160/234 | < Previous Page | 156 157 158 159 160 161 162 163 164 165 166 167  | Next Page >

• How to handle redirection in an Ajax based application

  - by nimo

  hi all, I'm developing a Ajax based php application. As anybody knows, I'm checking whether user is logged in every php file as the first statement. And there are two ways that I should response in an event of logging failure, server redirect to the login page using header(url). CASE: If user directly enter a particular URL passing url in Ajax response asking client side page redirection or notification CASE: If user trying to perform some action through a Ajax request So my question is how can identify whether request coming from client side is a Ajax call or not ? If I know that I can handle my response accordingly. OR Is there a better way of handling above scenario ? Thank You

  Read the article

• Speeding up inner-joins and subqueries while restricting row size and table membership

  - by hiffy

  I'm developing an rss feed reader that uses a bayesian filter to filter out boring blog posts. The Stream table is meant to act as a FIFO buffer from which the webapp will consume 'entries'. I use it to store the temporary relationship between entries, users and bayesian filter classifications. After a user marks an entry as read, it will be added to the metadata table (so that a user isn't presented with material they have already read), and deleted from the stream table. Every three minutes, a background process will repopulate the Stream table with new entries (i.e. whenever the daemon adds new entries after the checks the rss feeds for updates). Problem: The query I came up with is hella slow. More importantly, the Stream table only needs to hold one hundred unread entries at a time; it'll reduce duplication, make processing faster and give me some flexibility with how I display the entries. The query (takes about 9 seconds on 3600 items with no indexes): insert into stream(entry_id, user_id) select entries.id, subscriptions_users.user_id from entries inner join subscriptions_users on subscriptions_users.subscription_id = entries.subscription_id where subscriptions_users.user_id = 1 and entries.id not in (select entry_id from metadata where metadata.user_id = 1) and entries.id not in (select entry_id from stream where user_id = 1); The query explained: insert into stream all of the entries from a user's subscription list (subscriptions_users) that the user has not read (i.e. do not exist in metadata) and which do not already exist in the stream. Attempted solution: adding limit 100 to the end speeds up the query considerably, but upon repeated executions will keep on adding a different set of 100 entries that do not already exist in the table (with each successful query taking longer and longer). This is close but not quite what I wanted to do. Does anyone have any advice (nosql?) or know a more efficient way of composing the query?

  Read the article

• Recommendations for an in memory database vs thread safe data structures

  - by yx

  TLDR: What are the pros/cons of using an in-memory database vs locks and concurrent data structures? I am currently working on an application that has many (possibly remote) displays that collect live data from multiple data sources and renders them on screen in real time. One of the other developers have suggested the use of an in memory database instead of doing it the standard way our other systems behaves, which is to use concurrent hashmaps, queues, arrays, and other objects to store the graphical objects and handling them safely with locks if necessary. His argument is that the DB will lessen the need to worry about concurrency since it will handle read/write locks automatically, and also the DB will offer an easier way to structure the data into as many tables as we need instead of having create hashmaps of hashmaps of lists, etc and keeping track of it all. I do not have much DB experience myself so I am asking fellow SO users what experiences they have had and what are the pros & cons of inserting the DB into the system?

  Read the article

• Ruby Thread with "watchdog"

  - by Sergio Campamá

  I'm implementing a ruby server for handling sockets being created from GPRS modules. The thing is that when the module powers down, there's no indication that the socket closed. I'm doing threads to handle multiple sockets with the same server. What I'm asking is this: Is there a way to use a timer inside a thread, reset it after every socket input, and that if it hits the timeout, closes the thread? Where can I find more information about this? EDIT: Code example that doesn't detect the socket closing require 'socket' server = TCPServer.open(41000) loop do Thread.start(server.accept) do |client| puts "Client connected" begin loop do line = client.readline open('log.txt', 'a') { |f| f.puts line.strip } end rescue puts "Client disconnected" end end end

  Read the article

• Stream/string/bytearray transformations in Python 3

  - by Craig McQueen

  Python 3 cleans up Python's handling of Unicode strings. I assume as part of this effort, the codecs in Python 3 have become more restrictive, according to the Python 3 documentation compared to the Python 2 documentation. For example, codecs that conceptually convert a bytestream to a different form of bytestream have been removed: base64_codec bz2_codec hex_codec And codecs that conceptually convert Unicode to a different form of Unicode have also been removed (in Python 2 it actually went between Unicode and bytestream, but conceptually it's really Unicode to Unicode I reckon): rot_13 My main question is, what is the "right way" in Python 3 to do what these removed codecs used to do? They're not codecs in the strict sense, but "transformations". But the interface and implementation would be very similar to codecs. I don't care about rot_13, but I'm interested to know what would be the "best way" to implement a transformation of line ending styles (Unix line endings vs Windows line endings) which should really be a Unicode-to-Unicode transformation done before encoding to byte stream, especially when UTF-16 is being used, as discussed this other SO question.

  Read the article

• implementing feature structures: what data type to use?

  - by Dervin Thunk

  Hello. In simplistic terms, a feature structure is an unordered list of attribute-value pairs. [number:sg, person:3 | _ ], which can be embedded: [cat:np, agr:[number:sg, person:3 | _ ] | _ ], can subindex stuff and share the value [number:[1], person:3 | _ ], where [1] is another feature structure (that is, it allows reentrancy). My question is: what data structure would people think this should be implemented with for later access to values, to perform unification between 2 fts, to "type" them, etc. There is a full book on this, but it's in lisp, which simplifies list handling. So, my choices are: a hash of lists, a list of lists, or a trie. What do people think about this?

  Read the article

• Where to start on creating finger swipe navigation trough a list.

  - by Thomas Stock

  Lets say I want to make a control to select any integer number by dragging on a "bar" with numbers: (156 is selected) Mousedown on "159" and dragging towards the left and then doing mouseup changes the control to this: (160 is selected) I've been experimenting for the past 3 hours but I'm inexperienced in Silverlight so I'm having problems getting started. My current guess is I should seperate this into 2 steps: Step 1: Build this control without swiping behavior. Just 2 buttons to go up a number or go down a number Step 2: Replace the buttons by handling mouse events. With my limited knowledge I think I would manage building a crappy control that does this, with very messy xaml and c# and lots of headaches when trying to apply styling and fancy state transitions, but I was hoping some xaml wizards could get me started with the basic approach? Edit: This is an implementation of what I'm trying to achieve in Silverlight: Iphone's datepicker:

  Read the article

• Is there a lightweight multipart/form-data parser in C or C++?

  - by Hongli

  I'm looking at integrating multipart form-data parsing in a web server module so that I can relieve backend web applications (often written in dynamic languages) from parsing the multipart data themselves. The multipart grammar (RFC 2046) looks non-trivial and if I implement it by hand a lot of things can go wrong. Is there already a good, lightweight multipart/form-data parser written in C or C++? I'm looking for one with no external dependencies other than the C or C++ standard library. I don't need email attachment handling or buffered I/O classes or a portability runtime or whatever, just multipart/form-data parsing. Things that I've considered: GMime - depends on glib, so no go. libapreq - too large, depends on APR, badly documented, no unit tests. I've also looked at writing a parser with Ragel, but I can't figure out how to do it because the grammar is not static: the boundary can change arbitrarily.

  Read the article

• What happened to the Windows "Midi Mapper"

  - by interstar

  I wrote a windows program many years ago, which created music by sending notes to the "midi mapper" (and thence to the midi-synth on my sound-card) Today, I have a soft-synth which, allegedly accepts midi information, so I'd assume it should be possible to use today's equivalent of a midi-mapper to route the midi output from my program to the soft-synth. There's clearly no longer a midi-mapper application in windows, but my program still works (on XP) in that it drives the built-in soundcard synth, so there must be some sort of midi handling layer in windows. How can I get at this? And maybe redirect the midi to the soft-synth?

  Read the article

• T-SQL: How Do I Create A "Private" Function Inside A Stored Procedure

  - by RPM1984

  Okay so im writing a SQL Server 2008 Stored Procedure (maintenance script). In doing so, being a good boy i've done plenty of error handling, checking rowcounts, printing output messages, etc But in doing this, ive found myself writing over and over again something like this: SELECT @RowsAffected = @@ROWCOUNT IF @RowsAffected > 0 BEGIN PRINT CAST(@RowsAffected, NVARCHAR(2)) + 'rows updated.' END Or debug messages like this: PRINT 'User ' + CAST(@UserId AS NVARCHAR(5)) + ' modified successfully' Is there a way i can create a kind of 'subroutine' inside the stored procedure (like a private method) that can accept something as a parameter (doesnt have to though) and do some logic? I want to be able to do something like this: CheckRowCounts Or this: PrintUserUpatedMessage(@UserId) Which would then perform the above logic (check rowcount, print message, etc) And yes obviously i can create a UDF, but then i would need to create/drop it etc as this logic is only required for the life of the execution of this stored procedure. Getting sick and tired of writing the same code over and over again, and changing all the different areas ive used it when i get an error =) Can anyone help?

  Read the article

• How to handle an "infinite" IEnumerable?

  - by Danvil

  A trivial example of an "infinite" IEnumerable would be IEnumerable<int> Numbers() { int i=0; while(true) { yield return i++; } } I know, that foreach(int i in Numbers().Take(10)) { Console.WriteLine(i); } and var q = Numbers(); foreach(int i in q.Take(10)) { Console.WriteLine(i); } both work fine (and print out the number 0-9). But are there any pitfalls when copying or handling expressions like q? Can I rely on the fact, that they are always evaluated "lazy"? Is there any danger to produce an infinite loop?

  Read the article

• Animation in quartz 2D

  - by coure06

  I want to create an app which after each 1 second will show 4-5 words on screen but the last word will zoom out/in. I can easily create static words and for the last animating word i need to draw the static again n again. How can i create 2 separate layers so the static text is on one layer ( i will fill it after each second) and the last word (animated one) will be on other layer. How to create 2 separate layers? Attached on same screen but handling their drawRect method separately?

  Read the article

• How to Programmatically Identify a PI Font (a Dingbat) under OS X

  - by Glenn Howes

  There is a class of fonts called Pi fonts whose glyphs, under OS X, get mapped to the private Unicode space 0xF021-0xF0FF such that if you subtract 0xF000 from each unicode character to retrieve the 8-bit version of the character and be able to draw that character as if it were a standard Roman character. My question is how do I recognize these fonts? It's obvious the system can do so because there is a category on the Special Characters palette called "Pi Fonts" which apparently has the various such fonts installed on my system. In my case they are BookshelSymbolSeven, MSReferenceSpeciality, MT-Extras, Marlett, MonotypeSorts, Webdings, and various Wingdings. If I use the old fashioned QuickDraw routines to ask for the TextEncoding of these fonts, I get a value of 0x20000 which I do not see in the system header file TextCommon.h. Am I supposed to treat any font with a TextEncoding of 0x20000 as a Pi Font? And I'd rather not use any QuickDraw font handling routines for obvious reasons.

  Read the article

• How to implement blocking request-reply using Java concurrency primitives?

  - by Uri

  My system consists of a "proxy" class that receives "request" packets, marshals them and sends them over the network to a server, which unmarshals them, processes, and returns some "response packet". My "submit" method on the proxy side should block until a reply is received to the request (packets have ids for identification and referencing purposes) or until a timeout is reached. If I was building this in early versions of Java, I would likely implement in my proxy a collection of "pending messages ids", where I would submit a message, and wait() on the corresponding id (with a timeout). When a reply was received, the handling thread would notify() on the corresponding id. Is there a better way to achieve this using an existing library class, perhaps in java.util.concurrency? If I went with the solution described above, what is the correct way to deal with the potential race condition where a reply arrives before wait() is invoked?

  Read the article

• Prefered method for looping sound flash as3

  - by Brian Heylin

  Hi there, I'm having some issues with looping a sound in flash AS3, in that when I tell the sound to loop I get a slight delay at the end/beginning of the audio. The audio is clipped correctly and will play without a gap on garage band. I know that there are issues with sound in general in flash, bugs with encodings and the inaccuracies with the SOUND_COMPLETE event (And Adobe should be embarrassed with their handling of these issues) I have tried to use the built in loop argument in the play method on the Sound class and also react on the SOUND_COMPLETE event, but both cause a delay. But has anyone come up with a technique for looping a sound without any noticeable gap?

  Read the article

• How do I prevent an ASP.NET MVC deployment on IIS 6.0, using wildcard mapping, from attempting to ha

  - by Rob

  As noted by the title, what is the best way to configure an IIS 6.0 deployment of an ASP.NET MVC application such that connections to hidden shares are ignored? The application in question is using wildcard mapping to allow for clean URLs since we are planning on upgrading to IIS 7.0 in the near future and we are also handling the caching and compression issues with a custom library so we would like to avoid turning wildcard mapping off unless absolutely necessary. Below is a one of the errors from the application to give you an example of what we are seeing. -------------------------------------------------------------------------------- System.Web.HttpException -------------------------------------------------------------------------------- Time Stamp - 03 Mar 2010, 08:11:44 Path - N/A, Internal Server Operation Message - The controller for path '/C$' could not be found or it does not implement IController. Target Site - System.Web.Mvc.IController GetControllerInstance(System.Type) Stack Trace - at System.Web.Mvc.DefaultControllerFactory.GetControllerInstance(Type controllerType) at System.Web.Mvc.DefaultControllerFactory.CreateController(RequestContext requestContext, String controllerName) at System.Web.Mvc.MvcHandler.ProcessRequest(HttpContextBase httpContext) at System.Web.Mvc.MvcHandler.ProcessRequest(HttpContext httpContext) at System.Web.Mvc.MvcHandler.System.Web.IHttpHandler.ProcessRequest(HttpContext httpContext) at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) --------------------------------------------------------------------------------

  Read the article

• Mixing Transaction Script pattern with DDD/CQRS

  - by Herman

  Hi all, Here is the situation, in order to support our legacy system, we need to insert to a table whenever a user logs in. This is basically an CRUD operation, so it doesn't really make sense to create repository/entity/command/event for this since this doesn't tie to any business rules at all. The only benefit to create a CQRS command is that this database write can happen asynchronously under that model. Which is a better route to take? Use CQRS, and then call a stored proc. when handling that command? Just call database directly in the controller (I am using asp.net mvc)

  Read the article

• Prevent Method call without Exception using @PreAuthorize Annotation

  - by Chepech

  Hi all. We are using Spring Security 3. We have a custom implementation of PermissionEvaluator that has this complex algorithm to grant or deny access at method level on the application. To do that we add a @PreAuthorize annotation to the method we want to protect (obviously). Everything is fine on that. However the behavior that we are looking for is that if a hasPermission call is denied, the protected method call only needs to be skipped, instead we are getting a 403 error each time that happens. Any ideas how to prevent that? You can find a different explanation of the problem here; AccessDeniedException handling during methodSecurityInterception

  Read the article

• Parameters with dots on the URI

  - by robertokl

  In my application, there is a resource, machine, and a nested resource from machine: ip. I want to be able to access the URI of an Ip typing the ip address. The URI should be something like this: /machines/m123/ips/192.168.0.1.xml Where "m123" is the name of the machine and "192.168.0.1" is one of the ips of that machine. The problem here is that rails miss understand the dots from the ip and the format. When I try to access this page, i get: No route matches "/machines/m123/ips/192.168.0.1.xml" And if I replace the dots for any other character it works, witch means that rails isn't handling the dots on the URI. Is there any way to enter a more complex regexp on the routes to make sure rails can treat it the way I want? I'm using rails 2.3.5 and ruby 1.8.7. Thank you.

  Read the article

• Odd visual issue with ListView item layout with two pressable pieces

  - by jnylen

  I wanted to make a ListView where the items have two pressable pieces, like the layouts that show up in a couple of places in the stock Android phone/contacts application: I have the layout working fine, including handling events from each piece separately, except for a visual issue when the smaller piece is pressed. In my application the smaller piece only gets a small ellipse for the background when it is pressed, like this: Note that is actually not my application - that is NubDial, but my application has the same problem. Since NubDial uses the exact same XML layout as the phone app, I'm not sure how relevant the list item layouts are, but here they are anyway: Contacts list: contacts_list_item.xml NubDial: contacts_list_item.xml Does anybody know what might be happening there?

  Read the article

• How to use xml response as XMLObject outside of ajax callback function

  - by Anthony

  Hopefully I've just made a dumb oversight, but I can't figure out why the following doesn't work: $(function() { var xml; $.get( "somexml.xml", function(data){ xml = data; }, "xml"); alert(xml); }); If I put the alert inside of the callback function, I get back object XMLdocument but if I place it outside of the ajax call, I get undefined. Since my goal is to have a new DOM to parse, I don't want the entire handling of the XMLdocument to be within the callback function. I've tried defining the variable outside of the entire onready function, inside at the top (like above) and inside the callback function, all with no luck. According to Specifying the Data Type for Ajax Requests in the jquery documentation, this should be possible.

  Read the article

• serial port close hangs in compact frame work 3.5

  - by ananda

  I have developed the application for windows mobile 5.0 and .net compact framework 2.0 sp2. This application communicates to the hardware device using serial port. This application works fine in windows mobile 5.0 based PDAs. I have handled data received event to get the data from serial port. But when I run my application on windows mobile 6.1 and .net compact framework 3.5, my application hangs on serial port close API call. There are many workarounds mentioned in the .net compact framework blog like (closing the com port on different thread, opening the port in the beginning of the application and close once application exists, polling for data instead of event handling), but nothing is working consistently.

  Read the article

• Anyone able to translate sIFR into AS3 (for hyphenation and with the help of a converter)?

  - by Murat Bezel

  One thing asked for a lot with sIFR is hyphenation. Now I almost solved it with integrating Hyphenator.as http://vis4.net/blog/2010/05/as3-hyphenation/. The only problem is that Hyphenator.as is written in AcionScript 3, while sIFR is in ActionScript 2. I found an AS2 to AS3 converter www.5etdemi.com/blog/archives/2006/11/as2-to-as3-converter-createtextfield-geturl-handling/ but the result examples.bezel.be/sIFR-as3.as is not working yet. Anyone able to contribute to making hyphenation work in sIFR? (Sorry for the links, but weirdly I am only allowed to post one link. Really weird.)

  Read the article

• Some web pages (especially Apple documentation) cause heavy CPU usage in Windows IE8

  - by Mark Lutton

  Maybe this belongs in Server Fault instead, but some of you may have noticed this issue (particularly those developing on Mac, using a Windows machine to read the reference material). I posted the same question on a Microsoft forum and got one answer from someone who reproduced the problem, so it's not just my machine. No solution yet. Ever since this month's security updates, I find that many web pages cause the CPU to run at maximum for as long as the web page is visible. This happens in both IE7 and IE8 on at least three different computers (two with Windows XP, one with Vista). Here is one of the pages, running on XP with IE 8: http://learning2code.blogspot.com/2007/11/update-using-subversion-with-xcode-3.html Here is one that does it in Vista with IE8: http://developer.apple.com/iphone/library/documentation/Cocoa/Reference/Foundation/Classes/NSString_Class/Reference/NSString.html You can leave the page open for hours and the CPU is still at high usage. This doesn't happen every time. It is not always reproduceable. Sometimes it is OK the second or third time it loads. In IE7 the high usage is in ieframe.dll, version 7.0.6000.16890. In IE8 the high usage is in iertutil.dll, version 8.0.6001.18806.

  Read the article

• Shutting down a WPF application from App.xaml.cs

  - by Johannes Rössel

  I am currently writing a WPF application which does command-line argument handling in App.xaml.cs (which is necessary because the Startup event seems to be the recommended way of getting at those arguments). Based on the arguments I want to exit the program at that point already which, as far as I know, should be done in WPF with Application.Current.Shutdown() or in this case (as I am in the current application object) probably also just this.Shutdown(). The only problem is that this doesn't seem to work right. I've stepped through with the debugger and code after the Shutdown() line still gets executed which leads to errors afterwards in the method, since I expected the application not to live that long. Also the main window (declared in the StartupUri attribute in XAML) still gets loaded. I've checked the documentation of that method and found nothing in the remarks that tell me that I shouldn't use it during Application.Startup or Application at all. So, what is the right way to exit the program at that point, i. e. the Startup event handler in an Application object?

  Read the article

< Previous Page | 156 157 158 159 160 161 162 163 164 165 166 167  | Next Page >