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  • How to extract semi-precise frequencies from a WAV file using Fourier Transforms

    - by Seisatsu
    Let us say that I have a WAV file. In this file, is a series of sine tones at precise 1 second intervals. I want to use the FFTW library to extract these tones in sequence. Is this particularly hard to do? How would I go about this? Also, what is the bast way to write tones of this kind into a WAV file? I assume I would only need a simple audio library for the output. My language of choice is C

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  • JSP/JSF conversion to ASP.NET

    - by sharru
    I have a pretty big JSF web application. I must convert the application to ASP.NET. I already converted the Java code to C# code manually and also using JCLA (Java Language Conversion Assistant from Microsoft). What is the best way to convert the JSF part to ASP.NET? Is there any tool that can help shorten the work? For example convert JSF <t:dataList> to ASP.NET datagrid, or converting panelGroup to asp:panel, etc...

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  • Graphical net and text

    - by chesheerkys
    Hello! My task is to make a control, that behaves itself like RichTextBox, but contains a graphical net. The only task, this net is solving, is to be visible. It should be solution in overriding OnPaint method, but it doesn't. This code: protected override void OnPaint(System.Windows.Forms.PaintEventArgs e) { base.OnPaint(e); ...//drawing a line } gives me RichTextBox without of text This code: protected override void WndProc(ref System.Windows.Forms.Message m) { base.WndProc(ref m); if (m.Msg == 15) { Graphics g = this.CreateGraphics(); g.DrawLine(new Pen(Color.White, 1), new Point(0, 0), new Point(400, 400)); } } sometimes draws extra lines Actually since these two ways don't work, I don't know what to try. Waiting for your advices :) BR Dmitry P.S. I’ve heard a lot about great opportunities of WPF, but I’m not really common with this technology and don’t know what to start with. P.P.S. Sorry for my English, it’s not my natural language.

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  • Function to hide sloppy phone numbers..

    - by Frank Malina
    I need to hide phone numbers (and maybe other contact details) in user generated content to protect my users from anonymous web. Input is very random, therefore I'd be looking to replace anything that looks like a phone number (e.g.: string of 3 or more numbers) with just dots, and also perhaps remove some exotic notations of e-mail addresses. What is the best way to do this? Nice and slick, reusable. Give away your secret regexes. Write in any language. Except perhaps COBOL :) function privacy($str){ // protect phone numbers // protect e-mail addresses // protect web addresses }

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  • i18n Spring MVC

    - by Enrique
    Hello. I want to use SessionLocaleResolver to get the locale from user session. The documentation says this: "Another option of resolving locales is by SessionLocaleResolver. It resolves locales by inspecting a predefined attribute in a user’s session. If the session attribute doesn’t exist, this locale resolver will determine the default locale from the accept-language HTTP header." But it does not say which attribute do I have to put in session. Y tried saving in session an attribute "lang" with value "en" but it did not work. Anybody knows which attribute do I have to save in session (key,value)?

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  • Jersey (Jax-RS) & EL

    - by smeg4brains
    Hi there! im trying to get a controller to return a view through a Expression Language-Filter, but have no idea on how to get jersey to use EL for filtering a view. View with EL-tags: <html> <title>%{msg}</title> </html> Controller: @GET @Produces("text/html") public Response viewEventsAsHtml(){ String view=null; try { view=getViewAsString("events"); }catch(IOException e){ LOG.error("unable to load view from file",e); return null; } Response.ResponseBuilder builder=Response.ok(view, MediaType.TEXT_HTML); return builder.build(); } How would one go about in order to get the controller to replace the ${msg} part in the view by some arbitrary value?

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  • Compiling a C program with a specific architecture

    - by Marplesoft
    I was recently fighting some problems trying to compile an open source library on my Mac that depended on another library and got some errors about incompatible library architectures. Can somebody explain the concept behind compiling a C program for a specific architecture? I have seen the -arch compiler flag before and have seen values passed to it such as ppc, i386 and x86_64 which I assume maps to the CPU "language", but my understanding stops there. If one program uses a particular architecture, do all libraries that it loads need to be on the same architecture as well? How can I tell what architecture a given program/process is running under?

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  • Form submit event problem

    - by developer 2010
    <form id="form1" runat="server" onsubmit="return CheckForm(this)"> <script type="text/javascript" language="javascript"> function CheckForm(frm) { if(CheckEntireForm(frm) == false) return false; } </script> Hello EveryBody Please help me to get solution I've used a javascript function on form's onSubmit event like which validates my page's textboxes etc. NOTE: i am not using asp.net's validation. i have got my own validation classes I've also used a dropdownlist with auto post back set to true in asp.net 2.0 when dropdownlist's selected index is changed it calls form's onsubmit while this did not use to happen in asp.net 1.1 I've used this on 140 pages in my website the worst case will be to call CheckForm(this.form) on my save buttons client click on all the pages. I am looking for a backword compatibility solution which can be applied at a single place like web.config or some class etc. i am using asp.net and javascript

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  • Converting digits, generated by weblog service, to Indic or Roman

    - by Sorush Rabiee
    I need to write something in my html code to convert digits of form 0123456789 to ?????????? (Arabic digits). the number of visitors is generated by blog service. and I want to convert its digits to Arabic. Counter: ????? ????????????? : <BlogSky:Weblog Counter /> ??? the Persian part of above code mean 'Number of visitors' and 'Persons' (from left to right). but digits are represented in latin (0123...). Is it possible to write something like a function in html? i want it to be a global one for using in weblogs. Note: I don't know anything about web programming languages. (and don't want to learn!). I'm not sure about language of above code. (html?)

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  • Regex in MySql - replace between Tags including Tags

    - by user998163
    I have a text like: [lang_de]Content in German[/lang_de][lang_en]Content in English[/lang_en]. I want to replace all text between [lang_en] and [/lang_en] including the opening and closing language tag. This is my current regex: UPDATE wp_posts SET post_content = '" . addslashes(preg_replace("/[lang_en](.*)[\/lang_en]/", '', $row['post_content'])) . "' WHERE ID = " . $row['ID'] With this regex, I do not get a valid results. It also replaces in html tags and so on. What would be the correct regex?

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  • Simple image server

    - by Joel
    I have a bunch of images that I need others to browse via a web browser in pretty much the same way as Apache-Gallery. I'd be able to dump all my images in a directory so that users hitting: http://server:port/directory would see small thumbnails and selecting an image would load it full size on a page with options to browse the previous or next image. I'm looking for a non Apache solution, much like the wonderfull Python simple http server, that can be launched anywhere with minimal configuration & fuss e.g. python -m SimpleHTTPServer 8000 In fact, the python solution above is pretty much want I want except it doesn't thumbnail the images but just a simple directory listing. Happy to use an app written in any common language so long as it is self contained and can run on linux on a custom port (and to re-iterate, not an Apache module).

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  • How to refresh parent page using javascript / asp.net in mozilla firefox browser

    - by Rajesh Rolen- DotNet Developer
    window.opener.location.reload(); is working fine with IE but not refreshing parent page in mozilla firefox browser.. please tell me how to refresh parent page in cross browser. i have got this function : Shared Sub CloseMyWindow() Dim tmpStr As String = "" tmpStr += "window.open('','_parent','');window.close();" tmpStr += "window.opener.location.reload();" 'Dim currentPage As Page = TryCast(HttpContext.Current.Handler, Page) 'currentPage.ClientScript.RegisterStartupScript(GetType(me), "refresh", tmpStr, True) HttpContext.Current.Response.Write("<script language='javascript'>" + tmpStr + "</script>") HttpContext.Current.Response.End() End Sub

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  • "Hostile" network in the company - please comment on a security setup

    - by TomTom
    I have a little specific problem here that I want (need) to solve in a satisfactory way. My company has multiple (IPv4) networks that are controlled by our router sitting in the middle. Typical smaller shop setup. There is now one additional network that has an IP Range OUTSIDE of our control, connected to the internet with another router OUTSIDE of our control. Call it a project network that is part of another companies network and combined via VPN they set up. This means: They control the router that is used for this network and They can reconfigure things so that they can access the machines in this network. The network is physically split on our end through some VLAN capable switches as it covers three locations. At one end there is the router the other company controls. I Need / want to give the machines used in this network access to my company network. In fact, it may be good to make them part of my active directory domain. The people working on those machines are part of my company. BUT - I need to do so without compromising the security of my company network from outside influence. Any sort of router integration using the externally controlled router is out by this idea So, my idea is this: We accept the IPv4 address space and network topology in this network is not under our control. We seek alternatives to integrate those machines into our company network. The 2 concepts I came up with are: Use some sort of VPN - have the machines log into VPN. Thanks to them using modern windows, this could be transparent DirectAccess. This essentially treats the other IP space not different than any restaurant network a laptop of the company goes in. Alternatively - establish IPv6 routing to this ethernet segment. But - and this is a trick - block all IPv6 packets in the switch before they hit the third party controlled router, so that even IF they turn on IPv6 on that thing (not used now, but they could do it) they would get not a single packet. The switch can nicely do that by pulling all IPv6 traffic coming to that port into a separate VLAN (based on ethernet protocol type). Anyone sees a problem with using he switch to isolate the outer from IPv6? Any security hole? It is sad we have to treat this network as hostile - would be a lot easier - but the support personnel there is of "known dubious quality" and the legal side is clear - we can not fulfill our obligations when we integrate them into our company while they are under a jurisdiction we don't have a say in.

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  • How do I use NTLM authentication with Active Directory

    - by Jon Works
    I am trying to implement NTLM authentication on one of our internal sites and everything is working. The one piece of the puzzle I do not have is how to take the information from NTLM and authenticate with Active Directory. There is a good description of NTLM and the encryption used for the passwords, which I used to implement this, but I am not sure of how to verify if the user's password is valid. I am using Coldfusion but a solution to this problem can be in any language (Java, Python, PHP, etc). Edit: I am using Coldfusion on Redhat Enterprise Linux. Unfortunately we cannot use IIS to manage this and instead have to write or use a 3rd party tool for this.

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  • linux user login/logout log for computer restriction

    - by Cedric
    Hi ! I would like to know how to log the login and logout of a user. I know it's possible to use the command "last". But this command is based on a file that has a r/w permission for the user, hence the possibility to change these data. I would like to log these data over two months. Why would I like to do that ? In fact, I would like to prevent a normal user to use a computer more than an hour a day - except week-ends, and 10 hours in total a week. Cedric System used : kubuntu, Programming language : bash script

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  • Haskell simple compilation bug

    - by fmsf
    I'm trying to run this code: let coins = [50, 25, 10, 5, 2,1] let candidate = 11 calculate :: [Int] calculate = [ calculate (x+candidate) | x <- coins, x > candidate] I've read some tutorials, and it worked out ok. I'm trying to solve some small problems to give-me a feel of the language. But I'm stuck at this. test.hs:3:0: parse error (possibly incorrect indentation) Can anyone tell me why? I've started with haskell today so please go easy on the explanations. I've tried to run it like: runghc test.hs ghc test.hs but with: ghci < test.hs it gives this one: <interactive>:1:10: parse error on input `=' Thanks

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  • breakthrough programming .net era

    - by Andrew Florko
    I wonder what are .net technologies / c# language improvements you consider as breakthrough in .net era for the last 5-10 years. I mean technologies that shifted developers mind. For example direct-x made assembler nearly abandoned for game programming in the end of XX century and JQuery extremely simplified ajax web development as well as javascript code reusability. What kind of breakthrough .net technologies you expect in the future and what modern .net technologies are just a light evolution of well known approaches. Do you consider .net 4.0 parallel extensions and other improvements as breakthrough, or may be we have reached the point when nothing radical is expected in modern programming?

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  • JSF taglib error

    - by Sunny Mate
    When i write <h:outputText value="Login Name"/> tag in my jsp i am getting "Cannot find FacesContext" error , with out that tag my jsp working fine here is my JSP <%@ page language="java" import="java.util.*" pageEncoding="ISO-8859-1"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <%@ taglib uri="http://java.sun.com/jsf/html" prefix="h" %> <%@ taglib uri="http://java.sun.com/jsf/core" prefix="f" %> <body> Login Name <input type="text" value=""/><br> **<h:outputText value="Login Name"/>** Password<input type="password" value=""/><br> <input type="submit" value="Login"> </body> </html>

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  • Unchecked_Conversion in ada

    - by maddy
    Hi all, Can anyone please make me clear about the use of unchecked conversion in ada language.I had tried the pdf and net but all doesnt give me a clear picture to me. Now i have a small piece of code shown below: subtype Element4_Range is integer range 1..4; subtype Element3_Range is integer range 1..3; subtype Myarr_Range is integer range 1..10; type Myarr3_Type is array (Myarr_Range) of Element3_Range; type Myarr4_Type is array (Myarr_Range) of Element4_Range; Myarr3 : Myarr3_Type; Myarr4 : Myarr4_Type := (1,2,3,3,1,3,2,1,2,1); Count_1 : Integer := 0; Count_2 : Integer := 0; Count_3 : Integer := 0; *function To_Myarr3 is new Unchecked_Conversion(Myarr4_type,Myarr3_type);* Now my doubt here is what does the function Myarr3 exactly do? Thanks and regards maddy

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  • Localization of strings in static lib

    - by AO
    I have a project that uses a static library (SL). In that SL, there are a couple of strings I'd like to localize and the project includes all of the localization files. The localization works just fine when storing all text translations in the same file. The thing is that I'd like to separate the SL strings from the other strings. I have tried to put two different *.strings files (Localizable.strings and Localizable2.strings) in the language folder of interest but that did not work. I have also tried to use two *.strings file with the same name (Localizable.strings) but with different paths. It didn't work either. It seems that only one localization file is supported, right? Could anyone suggest a good way of doing this? I'm using SDK 3.2 beta 2.

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  • How do languages handle side effects of compound operators?

    - by Kos
    Hello, Assume such situation: int a = (--t)*(t-2); int b = (t/=a)+t; In C and C++ this is undefined behaviour, as described here: Undefined Behavior and Sequence Points However, how does this situation look in: JavaScript, Java, PHP... C# well, any other language which has compound operators? I'm bugfixing a Javascript - C++ port right now in which this got unnoticed in many places. I'd like to know how other languages generally handle this... Leaving the order undefined is somehow specific to C and C++, isn't it?

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  • How to re-focus to a text field when focus is lost on a HTML form?

    - by Horace Ho
    There is only one text field on a HTML form. Users input some text, press Enter, submit the form, and the form is reloaded. The main use is barcode reading. I use the following code to set the focus to the text field: <script language="javascript"> <!-- document.getElementById("#{id}").focus() //--> </script> It works most of the time (if nobody touches the screen/mouse/keyboard). However, when the user click somewhere outside the field within the browser window (the white empty space), the cursor is gone. One a single field HTML form, how can I prevent the cursor from getting lost? Or, how to re-focus the cursor inside the field after the cursor is lost? thx!

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  • Using comet with PHP?

    - by ryeguy
    I was thinking of implementing real time chat using a PHP backend, but I ran across this comment on a site discussing comet: My understanding is that PHP is a terrible language for Comet, because Comet requires you to keep a persistent connection open to each browser client. Using mod_php this means tying up an Apache child full-time for each client which doesn’t scale at all. The people I know doing Comet stuff are mostly using Twisted Python which is designed to handle hundreds or thousands of simultaneous connections. Is this true? Or is it something that can be configured around?

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  • Is it possible to do AJAX calls in a liquid template?

    - by Brian Armstrong
    I'm looking at the liquid templating language for Rails apps: http://wiki.github.com/tobi/liquid/ I'd like my users to also be able to make AJAX calls (just like the ones in rails for periodically_call_remote, observe_field, etc). Is this possible? Assuming the rails helpers can be added as filters, how will the user be able to modify what gets returned by the AJAX call? They cannot modify an rjs file on the server or anything like that. I suppose the AJAX call could return JSON (instead of rendered html) and then the javascript could use that to render something. But I'm having a little trouble envisioning how it would work exactly. If anyone can point me to an example of this or clarify it'd be much appreciated. Thanks!

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  • Using one LINQ statement with different parameters

    - by Brettski
    I have a pretty complex linq statement I need to access for different methods. Each of these methods may need to see the resulting data with different parameters. For one method it may be a project code, for another it may be language. The statement is pretty much the same it's just the where part which changes. I have not been able to figure out how to use different where statements without duplicating the entire linq statement, and that just isn't dry enough for me. For example (greatly simplified): var r = from c in customer where c.name == "some name" // or it may be var r = from c in customer where c.customerId == 8 Is there a way to have both of these in the same statement so I can use one or the other based on what I am doing? I tried an if statement to use one of the where statements or the other, and that didn't go over very well.

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