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  • F# script to application

    - by sudaly
    I have written two small scripts, First one maintains a dictionary of current stock prices for a set of securities. I am using recursion to listen to a named pipe. Whenever there is something available on the name pipe, it updates the security price and goes right back and start listening to the pipe. The second one periodically reads the stock price of some security from the price cache of the first program and performs come calculation. But I have no idea how to make these two programs communicate. I somehow need to make my second programs start the first program and let it run in the background and get the price whenever it needs it. Can someone point me in the right direction? Thank you, -Niran

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  • Is Amazon SQS the right choice here? Rails performance issue.

    - by ole_berlin
    I'm close to releasing a rails app with the common networking features (messaging, wall, etc.). I want to use some kind of background processing (most likely Bj) for off-loading tasks from the request/response cycle. This would happen when users invite friends via email to join and for email notifications. I'm not sure if I should just drop these invites and notifications in my Database, using a model and then just process it with a worker process every x minutes or if I should go for Amazon SQS, storing the messages and invites there and let my worker retrieve it from Amazon SQS for processing (sending the invites / notifications). The Amazon approach would get load off my Database but I guess it is slower to retrieve messages from there. What do you think?

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  • Python breaks for a certain amount

    - by Brian Cox
    All, I am not very good at explaining so i will let my comments do it! #this script is to calculate some of the times table up to 24X24 and also miss some out #Range of numbers to be calculated numbers=range(1,25) for i in numbers: for w in numbers: print(str(i)+"X"+str(w)+"="+str(i*w)) #here i want to break randomly (skip some out) e.g. i could be doing the 12X1,12X2 and then 12X5 i have no limit of skips. Update Sorry if this is not clear i want it to break from the inner loop for a random amount of times

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  • Mod_rewrite works on local, not on remote, version?

    - by TylerT
    I have this site. Let's call it htp://www.mysite.com I have a rewrite rule to change htp://www.mysite.com/?q=words%20etc/0/10 into http://www.mysite.com/words%20etc/0/10 (or http://www.mysite.com//0/10 or http://www.mysite.com/0/10) .htaccess:ErrorDocument 404 htp://www.mysite.com/404.html options +FollowSymlinks rewriteEngine on rewriteCond %{REQUEST_URI} !-f rewriteCond %{REQUEST_URI} !-d rewriteCond %{REQUEST_URI} !index\.php rewriteRule ^/?([^/]+?)?/?([0-9]+?)/([0-9]+?)$ index.php/%{THE_REQUEST} [NC] Now, this works on my local apache 2.2.11 server, no errors. However on my host's apache 1.3.41 server, I get the following error: [Sat Mar 5 21:42:14 2011] [alert] [client [ip]] /home/_/public_html/mysite.com/.htaccess: RewriteRule: cannot compile regular expression '^/?([^/]+?)?/?([0-9]+?)/([0-9]+?)$'\n I imagine it's something quirky about the apache version as other sites on this host use mod_rewrite without a hitch. I've tried removing the +followSymlinks line, even the rewrite engine line. I haven't tried removing the conditions cause I don't think I should have to, I'm probably wrong.

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  • dropping user to IRB after reading from pipe

    - by aurelian
    I have this script that drops the user to an IRB session when executed. All good, but when I use *nix pipes to get the input (e.g. with cat), the IRB session ends immediately. I could reduce the script (let's call it myscript.rb) to the following: require 'irb' if $stdin.stat.size 0 @text = $stdin.read else @text= "nothing" end ARGV.clear IRB.start When executed like: ruby myscript.rb, I end up in the IRB session (as expected). But (assuming foo.txt exists in the cwd): cat foo.txt | ruby myscript.rb will just print the IRB prompt and then the IRB session is closed (I'm being dropped to $bash). Any known workarounds or ideas? BTW: it has the same behavior on ruby 1.8.7 as well as on 1.9.2.

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  • Ordered List (ol) showing up un-numbered?

    - by Abs
    Hello all, I have an ordered list (ol) on my page but the numbering is not showing up at all! I have done this: <ol> <li>my text</li> <li>my text</li> <li>my text</li> </ol> As I have typed the above, stackoverflow was able to render it correctly the way I wanted it to, like so: my text my text my text However, this is not happening on my webpage. I am viewing this in Firefox on my localhost. If any knows why my ol's look like ul's (i.e. no numbering) I would be grateful for help. If not, please let me know how I can achieve a numbered list using ul's. Thanks all

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  • Posting within PHP and receiving only cookie

    - by faya
    Hello I have a question. It might be sound ridiculous, but let me explain what I want to accomplish. Right now I try to embed open source forum to by site and I want to leave forum and my site databases split. When my site users are logging in I want them also automatically be logged in to the forum system. For that I want to login within my PHP code after receiving username and password in post, but I don't know how I can get only cookies in response. I have found out that I can use curl_init(), curl_exec(), curl_close() functionality, but response from curl_exec returns whole response(page content, cookies, headers). Is there a way to receive only cookies? P.S. - If my design is totally wrong please give an advise how I can embed this functionality! I would be very thankful!

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  • Abstract Classes and ReadOnly Properties

    - by serhio
    Let's have three classes; Line PoliLine SuperPoliLine for all that three classes a Distance is defined. But only for the Line a Distance can be Set. Is there a possibility to build a common abstract (MustInherit) class Segment, having a Distance as (abstract +? ReadOnly) member? Question for VB.NET, but C# answers welcomed too. Business Background Imagine a Bus. It has a lot of Stations, MainStations, and 2 TerminalStations. So Line is between 2 Stations, PoliLine is between 2 MainStations, and SuperPoliLine is between 2 TerminalStations. All "lines" are "Segments", but only the distance A-B between 2 stations - Line can be defined.

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  • Function template accepting nothing less than a bidirectional iterator or a pointer

    - by san
    I need a function template that accepts two iterators that could be pointers. If the two arguments are random_access iterators I want the return type to be an object of std::iterator<random_access_iterator_tag, ...> type else a std::iterator<bidirectional_iterator_tag, ...> type. I also want the code to refuse compilation if the arguments are neither a bidirectional iterator, nor a pointer. I cannot have dependency on third party libraries e.g. Boost Could you help me with the signature of this function so that it accepts bidirectional iterators as well as pointers, but not say input_iterator, output_iterator, forward_iterators. One partial solution I can think of is the following template<class T> T foo( T iter1, T iter2) { const T tmp1 = reverse_iterator<T>(iter1); const T tmp2 = reverse_iterator<T>(iter2); // do something } The idea is that if it is not bidirectional the compiler will not let me construct a reverse_iterator from it.

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  • Customize MS dynamic CRM entity in visua studio 2008

    - by Lalit
    Hi, I have installed the MS dynamic CRM on my windows server 2003. I want to add the javascript to the one of entity that has drop down control. let say Opportunity entity. But I don't know how to open the CRM in visual studio so that i can make changes. I have installed CRM explorer as well as Install the CRM Solution Framework(under folder\CRMSolutionFrameworkTemplate\Setup.cmd) Using command prompt to install: Setup.cmd {InstallDir} {ProjectName} {Project Long Name} {Organization Name} How to make the chanes, how to get the CRM in VS for edit. While opening the soution from "C:\Projects\MyCrmSolution\SourceCode\MyCrmSolution" It giving error as :"Mcrosoft.sourceanalysis.target not found error so it can not open the solution". please guide I am new in this stuff....

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  • How can one describe a rock-paper-scissors relationship between 3 items?

    - by Madara Uchiha
    Let's say I have the following structure: abstract class Hand {} class Rock extends Hand {} class Paper extends Hand {} class Scissors extends Hand {} The goal is to make a function (or a method) Hand::compareHands(Hand $hand1, Hand $hand2), which would return the winning hand in a rock-paper-scissors match. That would be very easy with a bunch of ifs, but the point is to have a more robust structure, that's relying on polymorphism rather than on procedural code. P.S. this is done in actual production code, if someone is asking. This isn't some sort of challenge or homework. (It's not really rock-paper-scissors, but you get the point).

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  • Full Calender in JQUERY using webservices in Asp.Net

    - by inkmca
    hi, this is My code it works fine for getting data and parsing but i am unable to get events displayed ..... please let me know possible reason very urgent, i feel callback(evnt) not working here............. events: function(callback) { $.ajax({ type: "POST", url: "WebService.asmx/hello", data: "{}", contentType: "application/json; charset=utf-8", dataType: "json", success: function(data) { var evnt = []; $(data.d).find('event').each(function() { evnt.push({ // title: $(this).attr('title'), // start: $(this).attr('start'), // end: $(this).attr('end') title: 'Events1', start: '2010-04-01', end: '2010-04-10' }); }); alert('called end'); callback(evnt); }, error: OnError }); }

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  • Microsoft Team System Equivalent stack.

    - by Nix
    I am looking for a free alternative to TS. What would be the best alternative stack(source control, bug tracking, project management/planning, wiki, automated builds (ci))? Keeping in mind that it would be nice if they all integrated well. For example, it would be nice to be able to link bugs to source control, and then be able to link to a project plan and then be able to automate building. I do not have issues with using Microsoft project to manage project planing. I know i would like to use these....: SVN TeamCity NUnit But i am struggling to find a good Wiki/Project Planning/Bug tracking, that would integrate well. Any questions let me know.

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  • How to expose a function that takes two input files as a REST resource?

    - by dafmetal
    I need to expose a function, let's say compute that takes two input files: a plan file and a system file. The compute function uses to system file to see whether the plan in the plan file can be executed or not. It produces an output file containing the result of this check including recommendations for the plan. I need to expose this functionality in a REST architecture and have no influence on the compute function itself (it is being developed by another organization). I can control the interface through which it is accessed. What would be a recommended way to expose this functionality in a REST architecture?

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  • timeline charts with rich ui

    - by Karthick R
    hi all, I have a requirement to come up with a time line chart and a few more controls on a single page[with rich ui]. I have short listed Flex, JSF[apache trinidad], html5, gwt these technologies. None of them provide timeline charts on their own. I am looking at other options such as using third party libraries. The chart should have drill down capabilities as well. Let me know if there is any specific technology that I should try. regards

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  • How I can make Recycle Bin for Database ?Application?

    - by Wael Dalloul
    Hi, I have database application, I want to allow the user to restore the deleted records from the database, like in windows we have Recycle bin for files I want to do the same thing but for database records, Assume that I have a lot of related tables that have a lot of fields. Edit: let's say that I have the following structures: Reports table RepName primary key ReportData Users table ID primary key Name UserReports table RepName primary key UserID primary key IsDeleted now if I put isdeleted field in UserReports table, the user can't add same record again if it marked as deleted, because the record is already and this will make duplication.

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  • Javascript not working IE any version

    - by Ce.
    Hey everyone. I am having some issues on my end and hopefully it's just something on my end but, could someone take a look at THIS PAGE in IE and let me know if you can see what is wrong. Please check it out first in FF or Chrome or Safari because it all works fine in those browsers. The two scripts I am using are a custom-ish dropdown menu and another using jcarousel lite. I can't seem to figure out what the problem is. Thanks for any help!!!

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  • Should I start to use CSS 3 & HTML 5?

    - by LeonixSolutions
    I fear this may sound subjective, sorry. I am wondering how "safe" it is to use CSS3 & HTML5 in a commercial app. I really want the power that they give, but am obviously wary that they are not completely standardized. If it helps any I can probably enforce the use of Chrome as the browser; I can likely offer FireFox as an alternative. I personally do not want to let the user choose their own browser and can probably enforce my choice in a corporate environment which is already heavily biased towards Google. I suppose that if I can enforce a Chrome only policy & carefully test before release then my only worry is that some "behaviour" may change in future. Would you risk it, or would play safe (or go with an alternative, such as a Java app, forgetting the browser)?

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  • Advice for building a browser-based audio mixer up to 32 tracks

    - by Jonathan P.
    As a personal hobby I am looking to build an online audio mixer where I can upload individual instrument tracks, control individual volumes of each track, and export the mixed down version. I've been trying (and have come pretty close) with javascript. I really would like to stay away from flash if possible, but I'm really looking for suggestions for technologies to try. If anyone has any suggestions on languages that are good at stuff like this or libraries that I am missing, please let me know! I have a test environment that I have been using: http://driverstestpractice.com/sandbox Currently all tracks on the site are set to the click track in order to test the track sync (which as you can tell is a little off)! Thanks!

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  • Guice ThrowingProvider problem

    - by KARASZI István
    According to the ThrowingProvider documentation of Guice I have the following interface: public interface IConfigurableProvider<T> extends ThrowingProvider<T, ConfigException> {} I have multiple classes that implements this interface, let assume I have the following: public class SomethingProvider extends ConfiguredProvider implements IConfigurableProvider<Something> {} Of course this class implements the necessary method: public Something get() throws ConfigException { /* ... */ } In my module, I have the following code in MyModule.java ThrowingProviderBinder.create(binder()) .bind(IConfigurableProvider.class, Something.class) .to(SomethingProvider.class); But when I start my application the following error produced: 6) No implementation for com.package.Something was bound. while locating com.package.Something for parameter 5 at com.package.OtherClass.<init>(OtherClass.java:78) at com.package.MyModule.configure(MyModule.java:106) I don't really know where should I start looking for the bug.

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  • Understanding Clojure concurrency example

    - by dusha
    Hello, I just go through various documentation on Clojure concurrency and came accross the example on the website (http://clojure.org/concurrent_programming). (import '(java.util.concurrent Executors)) (defn test-stm [nitems nthreads niters] (let [refs (map ref (replicate nitems 0)) pool (Executors/newFixedThreadPool nthreads) tasks (map (fn [t] (fn [] (dotimes [n niters] (dosync (doseq [r refs] (alter r + 1 t)))))) (range nthreads))] (doseq [future (.invokeAll pool tasks)] (.get future)) (.shutdown pool) (map deref refs))) I understand what it does and how it works, but I don't get why the second anonymous function fn[] is needed? Many thanks, dusha. P.S. Without this second fn [] I get NullPointerException.

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  • Programming tutorials for people with zero experience

    - by www.aegisub.net
    A friend of mine is interested in learning how to program computers, but she knows nothing about programming. I suggested that Python might be a good language to start with, but after some googling, I couldn't find any tutorials that covered both programming and Python in an adequate way. I don't want her to go through the tiresome "learn algorithms in pseudocode first" routine. Instead, I'd like a tutorial that will explain the basic ideas while working towards a real goal, e.g. a very simple console game. Does anyone know of any such tutorials? Do you think that I'm mistaken in how I'm handling this? Is Python a bad choice? I know that something like C, C++ or Java won't work - too many details will be very counterproductive. On the other hand, I think that Lisp might be too mathematical and abstract. Python, on the other hand, will let her even do something like coding primitive graphical games in a short period of time.

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  • What is this Design Pattern?

    - by Can't Tell
    I read the Wikipedia articles on FactoryMethod and AbstractFactory but the following code doesn't seem to fit anywhere. Can someone explain to me what the following pattern is or if it is an anti-pattern? interace PaymentGateway{ void makePayment(); } class PaypalPaymentGateway implements PaymentGateway { public void makePayment() { //some implementation } } class AuthorizeNetPaymentGateway implements PaymentGateway { public void makePayment() { //some implementation } } class PaymentGatewayFacotry{ PaymentGateway createPaymentGateway(int gatewayId) { if(gatewayId == 1) return PaypalPaymentGateway(); else if(gatewayId == 2) return AuthorizeNetPaymentGateway(); } } Let's say the user selects the payment method using a radio button on an html page and the gatewayId is derived from the radio button value. I have seen code like this and thought it was the AbstractFactory pattern but after reading the Wikipedia article, I'm having doubts.

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  • jQuery - Change background of input field if text getting replaced

    - by ywickham
    I'm currently using jQuery to restrict a text box to number only input as follows: $('input.numbersOnly').keyup(function () { this.value = this.value.replace(/[^0-9\.]/g,''); }); I'd like to let the user know that what they are typing is being rejected by changing the background color of the field. I know that I can change the background of a field using something like this: $('input.numbersOnly').addClass('alertClass'); My question is, how do I combine the two code examples above so that the color of the field changes as the character is getting replaced? My goal is to alert the user that something is wrong with their input as they type it in the field. Thanks!

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  • rails migration. modify starting point for auto_increment

    - by railsnew
    I have a table already created. I am looking for a rails migration where I can modify the starting point of the auto_increment number for id column of my table. Let's say I want it to start from 1000. I googled a bit and came across this: it says: :options "string" pass raw options to your underlying database, e.g. auto_increment = 10000. Note that passing options will cause you to lose the default ENGINE=InnoDB statement Can this be used for something I want? and how will the migration look since i am changing the column and not creating new one...

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