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  • Go Channels in Ruby

    - by Julius Eckert
    In the Go programming language, you can send Messages around using a construct called "Channels". http://golang.org/doc/effective_go.html#channels I would love to use something like that in Ruby, especially for IPC. Pseudocode of what I want: channel = Channel.new fork do 3.times{ channel.send("foo ") } exit! end Thread.new do 3.times{ channel.send("bar ") } end loop do print channel.recv end # ~> bar foo foo bar bar foo Is there any construct, library or equivalent for Ruby which works like that ? If not: What is the best way to build such an abstraction?

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  • First Call to a Controller, Constant is defined, Second call, "uninitialized constant Oauth"?

    - by viatropos
    I am trying to get the OAuth gem to work with Rails 3 and I'm running into this weird problem... (independent of the gem, I think I've run into this once before) I have a controller called "OauthTestController", and a model called "ConsumerToken". The model looks like this. require 'oauth/models/consumers/token' class ConsumerToken < ActiveRecord::Base include Oauth::Models::Consumers::Token end When I go to "/oauth_test/twitter", it loads the Oauth::Models::Consumers::Token module and I'm able to connect to twitter no problem. But the second time I try it (just refresh the /oauth_test/twitter url), it gives me this error: NameError (uninitialized constant Oauth): app/models/consumer_token.rb:4 app/models/twitter_token.rb:2 app/controllers/oauth_test_controller.rb:66:in `load_consumer' Why is that? It has something to do with load paths or being in development mode maybe?

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  • c# resize window over display resolution

    - by Sebastian
    I am total newbie in .Net programming so be patient, please ;-). I have problem with resizing window. I want to resize from my app other app's window and take screenshot of it. I do resizing based on this example: http://blogs.geekdojo.net/richard/archive/2003/09/24/181.aspx. But I have a problem. I work on a laptop with 1024x640 pixels screen resolution but I want to resize my window to 1200x1600 px. I can't do that couse display limitations. Is there any tricky solution to resize window for this resolution and take a screenshot of whole window? I've alos tried Sdesk program witch is suggested here: http://stackoverflow.com/questions/445893/create-window-larger-than-desktop-display-resolution. Any help?

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  • prevent multiple login with same login credentials in php

    - by shinod
    My website has premium videos, for which users have to pay to watch it. I am sending a random user name and password to the user's email id when the payment is completed. Then I want to assure no more than one user use that login credentials simultaneously. For that I use a login_status column in database table with login credentials and change it to 1 when one user login and change to 0 when user log out. But the problem is, if the user close browser or network connection loss may happened will not update database. Then login_will be 1 undefinitely and no one can use that login credentials again. Is there any idea to accomplish my task?

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  • How to create windows form to display properly in all monitors?

    - by madhu bn
    I have created a windows form using (vs.net 2008 and vb.net as programming lanugage). Functionality part is working fine as expected. My issues is that, when i run my application in different machines, the form display is not proper accross the monitory screen. In some machines i noticed extra space on leftside of the container. In some other machine's it is vice versa. If you maximize or restore the form, the size varies. I tried to check the window form design on different machines using visual studio 2008, there also the form design looks differently. Please give me the solution to fix this issue. Thanks in advance.

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  • How to create windows form to display properly in all monitors?

    - by Madhu
    I have created a windows form using (vs.net 2008 and vb.net as programming lanugage). Functionality part is working fine as expected. My issues is that, when i run my application in different machines, the form display is not proper accross the monitory screen. In some machines i noticed extra space on leftside of the container. In some other machine's it is vice versa. If you maximize or restore the form, the size varies. I tried to check the window form design on different machines using visual studio 2008, there also the form design looks differently. Please give me the solution to fix this issue. Thanks in advance.

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  • Smartest way to draw 100+ images on screen

    - by Henrik
    Hello all, First of all I'm a newbie when it comes to Android programming. So if this question is totally stupid please delete it ASAP :-). Question: I'm going to draw a grid of 10x10 PNG images. Each image is 32x32 px. All of the images are unique. I'm thinking that the easiest way seems to be to put each image in an ImageView. If adding all ImageView's to the layout would this give me some kind of performance hit? Would there be any smarter way to draw these images? Thanks. / Henrik

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  • How do you share your git repository with other developers?

    - by semi
    I have a central git repository that everyone pushes to for testing and integration, but it only is pushed to when features are 'ready'. While in the middle of a big task, developers frequently have many commits that stay on their harddrives. Sometimes in the middle of these projects I'd like to either see what another developer is doing, or show him how I've done something. I'd like to be able to tell another developer to just "pull my working copy" The only way I can think of is having everyone run ssh on their development machines and adding accounts or ssh keys for everyone, but this is a huge privacy and permissions nightmare, and seems like a lot of work to maintain. Should we just be pushing to that central repository in these cases? Should we be pushing after every local commit?

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  • What's the easiest/fast way to get my website up and running on the web?

    - by ggfan
    This is probably a really really beginner's question, but I would like to know what's the fastest way to get my site on the web so that people can start using it. I'm learning everything about programming out of books and at home so I don't have much experience. --Before I go to like godaddy.com or such site to get a domain name, is there any free sites that would allow me to upload my site so users can use it? I have html,css,php,mysql,javascipt in my scripts so I don't think many sites allow free uploads with such languages. --If I can't find a free site, is there any good places to get a domain name and web hosting that supports most languages at a low price? (doesn't have to be professional hosting because I am still a beginner) --If I go to say godaddy.com and get their webhosting and domain name, would I be allowed to run php,mysql,python,java on it? (I looked at some hosting sites and most only allow php/mysql)

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  • Unit testing "hybrid" WPF/Silverlight controls

    - by Alan Mendelevich
    I'm starting a new WPF/Silverlight custom control project and wanted to do unit testing on this one. However I'm a little confused about how to approach this. This control would be based on the same codebase for both WPF and Silverlight with minor forking using #ifs and partial classes to tame the differences. I guess I could write unit tests for WPF part with NUnit, MSTest, xUnit, etc. and for the Silverlight part with Silverlight Unit Test Framework but this doesn't sound very elegant to me. I'd have to either ignore testing identical code on one of the platforms and test only differing parts (which is not very trustworthy) or rewrite tests for 2 frameworks (which is annoying). Is this the right way to go? I'm wondering if there's some guidance, articles, tutorials out there on how to approach this task. Any pointers?

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  • Using boost::asio::async_read with stdin?

    - by yeus
    hi poeple.. short question: I have a realtime-simulation which is running as a backround process and is connected with pipes to the calling pogramm. I want to send commands to that process using stdin to get certain information from it via stdout. Now because it is a real-time process, it has to be a non blocking input. Is boost::asio::async_read in conjunction with iostream::cin a good idea for this task? how would I use that function if it is feasible? Any more suggestions?

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  • Splitting string on probable English word boundaries

    - by Sean
    I recently used Adobe Acrobat Pro's OCR feature to process a Japanese kanji dictionary. The overall quality of the output is generally quite a bit better than I'd hoped, but word boundaries in the English portions of the text have often been lost. For example, here's one line from my file: softening;weakening(ofthemarket)8 CHANGE [transform] oneselfINTO,takethe form of; disguise oneself I could go around and insert the missing word boundaries everywhere, but this would be adding to what is already a substantial task. I'm hoping that there might exist software which can analyze text like this, where some of the words run together, and split the text on probable word boundaries. Is there such a package? I'm using Emacs, so it'd be extra-sweet if the package in question were already an Emacs package or could be readily integrated into Emacs, so that I could simply put my cursor on a line like the above and repeatedly invoke some command that splits the line on word boundaries in decreasing order of probable correctness.

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  • Controlling the laziest common denominator

    - by bobobobo
    This is a programming-related question in that it has to do with combatting the laziest common denominator in a start-up like team. Some devs are driven. They wanna do stuff. They wanna build feature after feature. They wanna do it all. Others are.. lazy. And in every team there's someone who is the laziest. Some lazy people though have an influence on the others.. by their behavior and words, they actually make other people wanna do less. You can't always get rid of these people. But you need to control it. How?

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  • What happens with TCP packets between two Socket.BeginReceive calls?

    - by Rodrigo
    I have a doubt about socket programming. I am developing a TCP packet sniffer. I am using Socket.BeginAccept, Socket.BeginReceive to capture every packet, but when a packet is received I have to process something. It is a fast operation, but would take some milliseconds, and then call BeginReceive again. My question is, what would happen if some packets are sent while I am processing, and haven't called BeginReceive? Are packets lost, or are they buffered internally? Is there a limit?

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  • Key logging in .NET

    - by Moshe
    Is it possible to write a key logger in Visual Basic.NET? Is this the right language to be using? So far, I've gotten a console app to read input and append to a file. 1)How can I make a .NET program "catch" all keyboard input? 2)How do I make a process not show up in Task Manager? This is not for a virus, but rather a parental control program for a specific clientele. No malicious intent here.

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  • Memory footprint of a parsed XML file in Classic ASP?

    - by Pete Duncanson
    Anyone know of a way to find out the amount of memory/size of a XMLDocument once it has parsed a XML file? I've been doing "beer mat" calculations so far but have been asked to come up with some more legit numbers through monitoring some how. I need to create about 1500 XML files (via FreeThreadedXMl-DOM object), which verge between 3-9K in size and store them in Application vars but our SysAdmin is worried about us gobbling up too much memory. Other than the crude method of booting up a fresh IIS instance and then loading everything in and monitoring before and after memory usage in Task Manager I can't think of a way of doing it with a bit more accuracy.

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  • Are C++ meta-templates required knowledge for programmers?

    - by Robert Gould
    In my experience Meta-templates are really fun (when your compilers are compliant), and can give good performance boosts, and luckily I'm surrounded by seasoned C++ programmers that also grok meta-templates, however occasionally a new developer arrives and can't make heads or tails of some of the meta-template tricks we use (mostly Andrei Alenxandrescu stuff), for a few weeks until he gets initiated appropriately. So I was wondering what's the situation for other C++ programmers out there? Should meta-template programming be something C++ programmers should be "required" to know (excluding entry level students of course), or not? Edit: Note my question is related to production code and not little samples or prototypes

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  • create new inbox folder and save emails

    - by kasunmit
    i am trying http://www.c-sharpcorner.com/uploadfile/rambab/outlookintegration10282006032802am/outlookintegration.aspx[^] this code for create inbox personal folder and save same mails at the datagrid view (outlook 2007 and vsto 2008) i am able to create inbox folder according to above example but couldn't wire code for save e-mails at that example to save contect they r using following code if (chkVerify.Checked) { OutLook._Application outlookObj = new OutLook.Application(); MyContact cntact = new MyContact(); cntact.CustomProperty = txtProp1.Text.Trim().ToString(); //CREATING CONTACT ITEM OBJECT AND FINDING THE CONTACT ITEM OutLook.ContactItem newContact = (OutLook.ContactItem)FindContactItem(cntact, CustomFolder); //THE VALUES WE CAN GET FROM WEB SERVICES OR DATA BASE OR CLASS. WE HAVE TO ASSIGN THE VALUES //TO OUTLOOK CONTACT ITEM OBJECT . if (newContact != null) { newContact.FirstName = txtFirstName.Text.Trim().ToString(); newContact.LastName = txtLastName.Text.Trim().ToString(); newContact.Email1Address = txtEmail.Text.Trim().ToString(); newContact.Business2TelephoneNumber = txtPhone.Text.Trim().ToString(); newContact.BusinessAddress = txtAddress.Text.Trim().ToString(); if (chkAdd.Checked) { //HERE WE CAN CREATE OUR OWN CUSTOM PROPERTY TO IDENTIFY OUR APPLICATION. if(string.IsNullOrEmpty(txtProp1.Text.Trim().ToString())) { MessageBox.Show("please add value to Your Custom Property"); return; } newContact.UserProperties.Add("myPetName", OutLook.OlUserPropertyType.olText, true, OutLook.OlUserPropertyType.olText); newContact.UserProperties["myPetName"].Value = txtProp1.Text.Trim().ToString(); } newContact.Save(); this.Close(); } else { //IF THE CONTACT DOES NOT EXIST WITH SAME CUSTOM PROPERTY CREATES THE CONTACT. newContact = (OutLook.ContactItem)CustomFolder.Items.Add(OutLook.OlItemType.olContactItem); newContact.FirstName = txtFirstName.Text.Trim().ToString(); newContact.LastName = txtLastName.Text.Trim().ToString(); newContact.Email1Address = txtEmail.Text.Trim().ToString(); newContact.Business2TelephoneNumber = txtPhone.Text.Trim().ToString(); newContact.BusinessAddress = txtAddress.Text.Trim().ToString(); if (chkAdd.Checked) { //HERE WE CAN CREATE OUR OWN CUSTOM PROPERTY TO IDENTIFY OUR APPLICATION. if (string.IsNullOrEmpty(txtProp1.Text.Trim().ToString())) { MessageBox.Show("please add value to Your Custom Property"); return; } newContact.UserProperties.Add("myPetName", OutLook.OlUserPropertyType.olText, true, OutLook.OlUserPropertyType.olText); newContact.UserProperties["myPetName"].Value = txtProp1.Text.Trim().ToString(); } newContact.Save(); this.Close(); } } else { OutLook._Application outlookObj = new OutLook.Application(); OutLook.ContactItem newContact = (OutLook.ContactItem)CustomFolder.Items.Add(OutLook.OlItemType.olContactItem); newContact.FirstName = txtFirstName.Text.Trim().ToString(); newContact.LastName = txtLastName.Text.Trim().ToString(); newContact.Email1Address = txtEmail.Text.Trim().ToString(); newContact.Business2TelephoneNumber = txtPhone.Text.Trim().ToString(); newContact.BusinessAddress = txtAddress.Text.Trim().ToString(); if (chkAdd.Checked) { //HERE WE CAN CREATE OUR OWN CUSTOM PROPERTY TO IDENTIFY OUR APPLICATION. if (string.IsNullOrEmpty(txtProp1.Text.Trim().ToString())) { MessageBox.Show("please add value to Your Custom Property"); return; } newContact.UserProperties.Add("myPetName", OutLook.OlUserPropertyType.olText, true, OutLook.OlUserPropertyType.olText); newContact.UserProperties["myPetName"].Value = txtProp1.Text.Trim().ToString(); } newContact.Save(); this.Close(); } } else { //CREATES THE OUTLOOK CONTACT IN DEFAULT CONTACTS FOLDER. OutLook._Application outlookObj = new OutLook.Application(); OutLook.MAPIFolder fldContacts = (OutLook.MAPIFolder)outlookObj.Session.GetDefaultFolder(OutLook.OlDefaultFolders.olFolderContacts); OutLook.ContactItem newContact = (OutLook.ContactItem)fldContacts.Items.Add(OutLook.OlItemType.olContactItem); //THE VALUES WE CAN GET FROM WEB SERVICES OR DATA BASE OR CLASS. WE HAVE TO ASSIGN THE VALUES //TO OUTLOOK CONTACT ITEM OBJECT . newContact.FirstName = txtFirstName.Text.Trim().ToString(); newContact.LastName = txtLastName.Text.Trim().ToString(); newContact.Email1Address = txtEmail.Text.Trim().ToString(); newContact.Business2TelephoneNumber = txtPhone.Text.Trim().ToString(); newContact.BusinessAddress = txtAddress.Text.Trim().ToString(); newContact.Save(); this.Close(); } } /// /// ENABLING AND DISABLING THE CUSTOM FOLDER AND PROPERY OPTIONS. /// /// /// private void rdoCustom_CheckedChanged(object sender, EventArgs e) { if (rdoCustom.Checked) { txFolder.Enabled = true; chkAdd.Enabled = true; chkVerify.Enabled = true; txtProp1.Enabled = true; } else { txFolder.Enabled = false; chkAdd.Enabled = false; chkVerify.Enabled = false; txtProp1.Enabled = false; } } i don t have idea to convert it to save e-mails in the datagrid view the data gride view i am mentioning here is containing details (sender address, subject etc.) of unread mails and the i i am did was perform some filter for that mails as follows string senderMailAddress = txtMailAddress.Text.ToLower(); List list = (List)dgvUnreadMails.DataSource; List myUnreadMailList; List filteredList = (List)(from ci in list where ci.SenderAddress.StartsWith(senderMailAddress) select ci).ToList(); dgvUnreadMails.DataSource = filteredList; it was done successfully then i need to save those filtered e-mails to that personal inbox folder i created already for that pls give me some help my issue is that how can i assign outlook object just like they assign it to contacts (name, address, e-mail etc.) because in the e-mails we couldn't find it ..

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  • Best Approach to process images in Django

    - by primalpop
    I've have an application with Android front end and Django as the back end. As part of the answers here, I'm confused over the approach which I should take to send images to Django Server. I've 2 options at my disposal as Piro pointed out there. 1) Sending images as Multi Part entity 2) Send image as a String after encoding it using Base 64. So I am considering the approach that would make it easy to be processed by Django. The images are small in size (<200kb) and number (<10). Any suggestions or pointers are most welcome.

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  • How To create a Simple NDK Program in Android NDK

    - by Rakesh
    Hi I am new to android Programming and NDK.Yet i am not clear with working in NDK.I just downloaded android ndk r4.If i want to develop appln using NDK,and i refered http://marakana.com/forums/android/android_examples/49.html for reference,But still not clear how to create the header file and implementation,I did nt have any previuos exp in c language.And they asked for run javah tool to create the JNI header file. I dont know how to use javah tool,but i found it in java bin directory and i tried using cmd javah -jni com.pathname.classname is this correct syntax? if so i tried doing it in android bin directory.I want to know ,what classname represents,is this name of header file class that i try to create Regards Rakesh Shankar.P

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  • What language is to binary, as Perl is to text?

    - by ehdr
    I am looking for a scripting (or higher level programming) language (or e.g. modules for Python or similar languages) for effortlessly analyzing and manipulating binary data in files (e.g. core dumps), much like Perl allows manipulating text files very smoothly. Things I want to do include presenting arbitrary chunks of the data in various forms (binary, decimal, hex), convert data from one endianess to another, etc. That is, things you normally would use C or assembly for, but I'm looking for a language which allows for writing tiny pieces of code for highly specific, one-time purposes very quickly. Any suggestions?

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  • Questions every good Java/J2EE Developer should be able to answer?

    - by Rachel
    I was going through Questions every good .Net developer should be able to answer and was highly impressed with the content and approach of this question, and so in the same spirit, I am asking this question for Java/J2EE Developer. What questions do you think should a good Java/J2EE programmer be able to answer? I am marking this question as community wiki as it is not user specific and it aims to serve programming community at large. Looking forward for some amazing responses. EDIT: Please answer questions too, as suggested in the comments, so that people could learn something new regarding the language, too.

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  • Delete or comment out non-working JUnit tests?

    - by Chris Knight
    I'm currently building a CI build script for a legacy application. There are sporadic JUnit tests available and I will be integrating a JUnit execution of all tests into the CI build. However, I'm wondering what to do with the 100'ish failures I'm encountering in the non-maintained JUnit tests. Do I: 1) Comment them out as they appear to have reasonable, if unmaintained, business logic in them in the hopes that someone eventually uncomments them and fixes them 2) Delete them as its unlikely that anyone will fix them and the commented out code will only be ignored or be clutter for evermore 3) Track down those who have left this mess in my hands and whack them over the heads with the printouts of the code (which due to long-method smell will be sufficently suited to the task) while preaching the benefits of a well maintained and unit tested code base

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  • How to properly update a feature branch from trunk?

    - by Pavel Radzivilovsky
    SVN book says: ...Another way of thinking about this pattern is that your weekly sync of trunk to branch is analogous to running svn update in a working copy, while the final merge step is analogous to running svn commit from a working copy I find this approach very unpractical in large developments, for several reasons, mostly related to reintegration step. From SVN v1.5, merging is done rev-by-rev. Cherry-picking the areas to be merged would cause us to resolve the trunk-branch conflicts twice (one when merging trunk revisions to the FB, and once more when merging back). Repository size: trunk changes might be significant for a large code base, and copying the differences files (unlike SVN copy) from trunk elsewhere may be a significant overhead. Instead, we do what we call "re-branching". In this case, when a significant chunk of trunk changes is needed, a new feature branch is opened from current trunk, and the merge is always downward (Feature branches - trunk - stable branches). This does not go along SVN book guidelines and developers see it as extra pain. How do you handle this situation?

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  • What CPAN module can summarize error logs?

    - by mithaldu
    I'm maintaining some website code that will soon dump all its errors and warnings into a log file. In order to make this a bit more pro-active i plan to parse this log file daily, summarize the warnings and errors (i.e. count the occurrence of each specific one and group by either warning/error) and then email this to the devs on the project. This would likely admittedly be rather trivial with a hash and some further fiddling, I wondered if there is a suitable module on CPAN that i could use to do this task. It would either be one that summarizes specifically perl error/warnings logs or one that summarizes arbitrary text files. Any suggestions?

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