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• how to stop an app on heroku

  - by yuri

  I have an app on heroku which is being used by few users. However, I notice there are some data issues which i'd like to fix and stop the app in the mean time so users don't enter anything new. Is there a way to stop the app on heroku rather than destroying it? I see that restart server command is there ...though I don't see anything like 'stop'

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• Importing data and keeping ids and relationships

  - by Justin Hamade

  I am working on cleaning up a mess that another programmer started. The created 2 identical databases for different locations but that obviously caused major issues. They are using cakePHP and there are quite a few relationships. I am pretty sure I will have to write a script to import that data from on DB to the other and keep all the relationships but was wondering if there is an easier way to do it.

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• JQuery get/ajax call executes callback without waiting for response

  - by dannyroa

  I'm having issues with my JQuery Ajax Call. The response is always null because the callback function is executed before the request to get_friends is completed. Is there anything I'm missing? Thanks in advance. $('#btn_update').click(function() { url = '/get_friends/'; $.get(url, {}, function(response){ alert(response); }); });

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• Specify a OneWay Binding in HandleBars - Ember

  - by Miguel Madero

  Is there a way to Specify a OneWay Binding in HandleBars? bind-attr always calls Ember.bind, which always create a two way binding. This seems to be the case for elements that don't even change: <img {{bind-attr class=":class-name-to-always-apply"}}> But even in cases where the element could change, we might have reasons to update it manually (e.g. performance or we don't want to change it on textChanged, but do it manually)

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• C# How do I split a string by strings and include the delimiters?

  - by mafutrct

  There are many similar questions, but apparently no perfect match, that's why I'm asking. I'd like to split a random string (e.g. 123xx456yy789) by a list of string delimiters (e.g. xx, yy) and include the delimiters in the result (here: 123, xx, 456, yy, 789). Good performance is a nice bonus. Regex should be avoided, if possible.

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• Latency on mobile networks (Android)

  - by Meep3D

  I am planning to give mobile phone development a shot and was thinking about making some simple multiplayer games. I know latency over local wifi is probably fine but what are the issues with latency over GPRS/3G? I've searched and the best I've seen is someone saying it was 'high', without presenting any concrete numbers. I suppose latency fluctuations are important as well - does anyone have any info on this?

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• Read Windows event logs using Enterprise Library

  - by Sathish

  I am using Enterprise library 3.1 to log application logs in Windows event logs, and I want to read this log by passing the date parameter. Please note that I will be accessing the remote machine and the performance should be good. Is there any method that can be used to read these logs using Ent Lib, or please suggest some good method.

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• Should multiple regional websites all use the same database?

  - by John Himmelman

  I'm developing a cms for a company that has multiple regional sites (us, uk, china, russia, etc..). Should I use a separate database for each of these sites or use a single database with a 'site' field in each table? My main concern is the table language encoding (ie, can storing strings in different langauges in the same table cause problems, such as sorting issues).

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• Geometric Mean: is there a built-in?

  - by doug

  i tried to find a built-in for geometric mean but couldn't. (Obviously a built-in isn't going to save me any time while working in the shell, nor do i suspect there's any difference in accuracy; for scripts i try to use built-ins as often as possible, where the (cumulative) performance gain is often noticeable. In case there isn't one (which i doubt is the case) here's mine. gm_mean = function(a){prod(a)^(1/length(a))}

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• Encoding Video on the iPhone

  - by Dave

  Im trying to record the contents of the iPhone screen to video , in the app I'm working on there able to create a little animation. I'm just not sure how to encode the screen contents/animation to video? The problem with using something like ffmpeg is that its LGPL which can lead to licensing issues, is there a better option?

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• Profiling With Visual Studio Team System

  - by Rotem

  Hi, I'm using Visual Studio Team System 2008 to run Load Tests. I have a test that executes a web service request and I would like to know how much time was spent in each layer of my application e.g. Time spent in IIS, Time spent in my Server application Time spent in SQL Server Can I get this sort of information by setting the performance counters in my load test properly? Thanks

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• Using // in a <script>'s source

  - by Dan Beam

  Hello fellow front-end web h4X0|2s, I was wondering if anyone had any resources, proof, or personal experience in using the age-old http/https JavaScript hack: <script src="//someserver.com/js/script.js"></script> Has anyone encountered issues in any of these browsers (IE 5.5+, FF2+, Chrome, Opera 9+, Safari 3+)? Has anybody had success stories? Thank you for your help.

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• Reading opened Excel file by OLEDB

  - by Sathish

  I am using OLEDB method to read an excel file, however if the file is closed then there is no issues but if the file that has to be read is open then if i use oledb i get an error. Any workaround for this??????? Please help....

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• Is there a bug/issue tracking system which integrates with Mercurial?

  - by basszero

  I've used Trac/Subversion before and really like the integration. My current project is using Mercurial for distributed development and it'd be nice to be able to track issues/bugs and have this be integrated with Mercurial. I realized this could be tricky with the nature of DVCS.

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• How much memory does a hashtable use?

  - by Michael

  Would a hashtable/hashmap use a lot of memory if it only consists of object references and int's? As for a school project we had to map a database to objects (that's what being done by orm/hibernate nowadays) but eager to find a good way not to store id's in objects in order to save them again we thought of putting all objects we created in a hashmap/hashtable, so we could easily retrieve it's ID. My question is if it would cost me performance using this, in my opinion more elegant way to solve this problem.

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• Video For Windows disable FILE_FLAG_NO_BUFFERING

  - by cunzlow

  I am using Video For Window's AVIFile functions. When I use AVIFileOpen I notice that it uses the flag FILE_FLAG_NO_BUFFERING when creating the .avi file. ProcessMonitor shows the that file was created with "no buffering". This flag is causing performance issues and I was wondering if there is a way to use this function without that flag.

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• Parent reference in automapped component in Fluent NHibernate

  - by asgerhallas

  In Fluent NHibernate, given an automapped component, is there a convention for setting up a parent reference back to the "holder" of the component? By having for example a property named Parent or something like that? I can't seem to find any information about how to do it or issues about it.

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• nhibernate, entity framework, active records or linq2sql

  - by Omu

  my team is starting a new project on asp.net mvc, and we are wondering what technology for data access to use, how do you think which one is the best, who has the best performance ? which one is easier to use and to maintain ?

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• SQL Server Text type v.s. varchar data type

  - by George2

  Hello everyone, I have variable length character and want to store in SQL Server (2005) database. I want to learn some best practices about how to choose TEXT SQL type or choose VARCHAR SQL type, pros and cons in performance/footprint/function. thanks in advance, George

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• Please suggest good book/website to for Threads and Concurrency?

  - by learner

  I have gone through Head First Java and some other sites but I couldn't find complete stuff related to Threads and additional concurrency packages at one place. Please suggest a book/website which covers complete Threads with more details like Synchronize and locking of objects More detailed about volatile Visibility issues in Threads java.util.concurrent package java.util.concurrent.atomic package

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• What is the best way to measure the memory usage of a C# function ?

  - by Duaa

  Hi all: I'm looking for an accurate way to measure memory usage of a C# program under Windows operating system. I'm using Visual Studio for programming my code and I want to know its time consuming for performance. Really, I tried to use the Task Manager, but I do not get an accurate measurment. Please, if any one know an accurate way to measure the memory consumption, please help me and thanks alot

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• Using Predicate of a class to Search Generic list - Faster than looping?

  - by Srikanth

  Lets say we have a generic list of Class1, typically having ~100 objects for a given session. I would like to see if the list has a particular object. ASP.NET 2.0 allows me to do this: Dim objResult as Class1 = objList.Find(objSearch) How does this approach rate when compared to a traditional For loop, looking at a performance perspective? How would this vary with increase or decrease in length of the list?

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• In what situations does Flash SWF misbehaves in different browsers.

  - by coderex

  Hi, Recently I had some issues with Flash in IE, involving a SWF which is something like a gallery. In Firefox its loads perfectly, but in IE it doesn't work properly sometimes. The first time it is loaded its works fine but when I refresh all the images are blank. The image data came from XML. I wish to get some tips regarding the browsers and Flash / SWF behavior in each. Thanks in advance.

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• Dataset size limit as an xml file.

  - by np

  Hi We are currently using DataSet for loading and saving our data to an xml file using Dataset and there is a good possibility that the size of the xml file could get very huge. Either way we are wondering if there is any limit on the size for an xml file so the Dataset would not run into any issues in the future due to the size of it. Please advise. Thanks N

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• CouchDB in Production

  - by NoelAdy

  I have been using CouchDB on some prototype applications and it has been brilliant, very easy to use and extremely quick. I was wondering if anyone has been using it in production and have any views on it's reliability, performance suitability for operational management etc ?? I am considering using it to support a service layer and would make use of its replication functionality. Any comments/experiences would be most welcome.

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