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• How can I check that I didn't break anything when refactoring?

  - by Nathan Fellman

  I'm about to embark on a bout of refactoring of some functions in my code. I have a nice amount of unit tests that will ensure I didn't break anything, but I'm not sure about the coverage they give me. Are there any tools that can analyze the code and see that the functionality remains the same? I plan to refactor some rather isolated code, so I don't need to check the entire program, just the areas that I'm working on. For context, the code I'm working on is in C/C++, and I work in Linux with GCC and VIM.

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• problem adding a where clause to a T-sql LEFT OUTER JOIN query

  - by Nickson

  SELECT TOP (100) PERCENT dbo.EmployeeInfo.id, MIN(dbo.EmployeeInfo.EmpNo) AS EmpNo, SUM(dbo.LeaveApplications.DaysAuthorised) AS DaysTaken FROM dbo.EmployeeInfo LEFT OUTER JOIN dbo.LeaveApplications ON dbo.EmployeeInfo.id = dbo.LeaveApplications.EmployeeID WHERE (YEAR(dbo.LeaveApplications.ApplicationDate) = YEAR(GETDATE())) GROUP BY dbo.EmployeeInfo.id, dbo.EmployeeMaster.EmpNo ORDER BY DaysTaken DESC The basic functionality i want is to retrieve all records in table dbo.EmployeeInfo irrespective of whether a corresponding record exists in table dbo.LeaveApplications. If a row in EmployeeInfo has no related row in LeaveApplications, i want to return its SUM(dbo.LeaveApplications.DaysAuthorised) AS DaysTaken column as NULL or may be even put a 0. With the above query, if i remove the where condition, am able to achieve what i want, but problem is i also want to return related rows from LeaveApplication only if ApplicationDate is in the current year. Now with the where condition added, am only able to get rows from EmployeeInfo only if they have corresponding rows in LeaveApplications yet i just wanted rows all in EmployeeInfo

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• How do I add a reference to a Web Application Project in an Associated Class Library?

  - by 5arx

  I'm working on an internet application that has been set up as a web SITE project (I know...) in Visual Studio. I need to add additional features/functionality so have added a class library to the project and referred to it in the main web site project. The issue now arises because I need to make use of core objects which live inside the App_Code directory in the web site project but this project doesn't appear to expose its DLL like web app/ code library projects do. Because of this I can't add a reference to the web site project in the class library to leverage the common site-wide code/objects. I can't move the stuff out of App_Code so I'm looking for a way to refer to the website project dll from the new class library. Can anyone suggest a workaround? All help v. gratefully received :-)

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• GAE uploading to database - or - how to create big dictionary in GAE?

  - by Koran

  Hi, I have a GAE application. A new request is to have a huge database to store many items for some functionality. The database needs to populated every week or so - and populating it is done by querying many external links which overall takes around 1-2 hours. So, doing it via GAE Cron is now out of the question. Another option I was thinking was to create it in external server and then uploading it to GAE DB. Is it possible to upload the data created externally to GAE DB straightaway? The question is because there will be close to 10 M items in it, so adding items individually to a DB is not going to work due to 30 second time limit. Thanks K

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• Modifying the Google Drive menu interface

  - by Dangerbunny

  So I'm working on a web-app for the Google Marketplace that's going to involve integration with Google Drive. Part of what I want to be able to do with the app involves something along the lines of adding a menu option to the Drive menu interface. For instance, you could be editing a document in drive and browse to File-"My new fancy option." Does anyone know if this is possible? Or if it is not, is there another way of adding this sort of custom action functionality where you are able to perform non Drive standard actions on files from within the Drive interface?

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• Please recommend good books for telemetry / SCADA system design & programming

  - by Mawg

  I am looking at several projects, all with roughly the same fucntionality. Some instruments collect some data (or control some functionality). They commmunicate by Internet (Etehrnet/wifi/GPRS/sasatellite) with a databse server which stores the measurements and provides a browser based means of qeurying the data, prodcuing reports, etc (and possibly also allows control of the remote equipment). Can anyone recommend a good book describing an approach to developing such a software architecture, keeping it generic, which tools, languages. test methods, etc to use? (note to self: ask a similar question about possible existing frameworks)

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• HTML5 Doctype Support

  - by Metropolis

  Hey Everyone, For a long time I have been using XHTML1.1 because I thought I was cool (yeah right). However, today I read Ian Hickson's Article about how everyone uses the wrong MIME type with XHTML and it opened my eyes a lot. I happen to be one of those people who are serving XHTML with text/html MIME, because like a lot of people, W3C says its "ok" to serve it this way. At the top of that article he says that "now" he would serve it using the HTML5 doctype (!DOCTYPE HTML). What are your thoughts about doing this? If I did not use unsupported functionality, would it be ok? What would the MIME type be in this case? Thanks for any help, Metropolis

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• how to customize NSTokenField like in "To/ CC" fields in mac mail?

  - by Miraaj

  Hi all, I am able to work with NSTokenField, it is easy to use.. but I want your suggestions on how can I customize it just like it is in "To/ CC" fields in mac mail ie. when no. of tokens in a token field increases height of "To" field gets increased to a certain limit then a vertical scroller starts appearing! By default when we use a token field neither its height gets increased nor a vertical scroller appears! I tried different combinations in IB but I could not obtain mac mail like functionality. Can anyone suggest me some solution for it?? Thanks, Miraaj

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• Java Scheduling Calendar

  - by cedric

  Hi. I have a j2ee web application which supports scheduling of execution of jobs. I am looking for a free calendar component written in java which allows scheduling functionalities as well as capable of changing view mode of tasks either by viewing taks for whole year, month view, week view, day view. Do you have any suggestion. Im sorry something came up with the implementation. I dnt have to use this calendar for triggering or calling jobs. I just need to retrieve schedules from database and display it in diff view modes. SO it's just some kind of GUI functionality

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• Connecting .NET to Common Lisp

  - by JPanest

  I have a fairly involved LispWorks Common Lisp module that sits atop some .NET modules via RDNZL. It has come up that I need to expose some of its functionality to some other .NET applications, and I'm not sure the best (shortest) way to approach this without re-writing the module in C#. I know there are a few CLR Lisp implementations but most seem unmaintained or incomplete and there are many things that cannot be trivially re-written in Scheme. Is there any facility that exposes the opposite of what RDNZL enables (.NET - Common Lisp)? Can I use RDNZL to deliver a DLL that accepts .NET objects?

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• Apache Shiro, INI-Configuration, Perms per URL: How to get URL params?

  - by Marcus Schultö

  I want to use Apache Shiro[1] in my JSF-Application to perform URL-based authorization checks, configuration done in shiro.ini As I see in the Shiro-documentation[2] there is a way to use a "perms"-filter /remoting/rpc/** = authc, perms["remote:invoke"] In my scenario I want this functionality, but on entity-level[3], where the entity-Id is in the http-request # "Open settings for user with id=123": # /user/settings.xhtml?user_id=123 /user/settings.xhtml = perms["user:update:XXX"] So, how do I do this with Shiro? How to I tell the perms-filter to check for http-params? Or is this supposed to be done in my Realm-Implemenation, concrete by calling FacesContext? [1] https://shiro.apache.org [2] https://shiro.apache.org/web.html#Web-webini [3] This can be done at least programmatically: SecurityUtils.getSubject().isPermitted("printer:query:lp7200") https://shiro.apache.org/permissions.html

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• Instrumenting Database Access

  - by Whisk

  Jeff mentioned in one of the podcasts that one of the things he always does is put in instrumentation for database calls, so that he can tell what queries are causing slowness etc. This is something I've measured in the past using SQL Profiler, but I'm interested in what strategies other people have used to include this as part of the application. Is it simply a case of including a timer across each database call and logging the result, or is there a 'neater' way of doing it? Maybe there's a framework that does this for you already, or is there a flag I could enable in e.g. Linq-to-SQL that would provide similar functionality. I mainly use c# but would also be interested in seeing methods from different languages, and I'd be more interested in a 'code' way of doing this over a db platform method like SQL Profiler.

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• a simple secenerio to implement java script asp.net C#, question rephrased

  - by user287745

  i had asked this question before but got no answer correct. so, this is a simple thing textbox.text='user typing'; button:-store the value to a variable and a database. very simple nothing to it but there should be no post back, that is the page must not load again, try ajax? tried it not working i must a lot of time trying to implement this using java script ajax and read many many post, but for some reason i cannot implement the functionality correctly. please help. thank you

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• is there any cross platform process manager tool

  - by lvlv

  I need a program that is able to launch a set of processes according to a schedule/configuration; the program would run in the background and restart the processes in case they crash. There are standard tools for this kind of task on both windows and unix - what I need is a cross platform program which could run on different operating systems using the same configuration. A portable C/C++ library which implements the basic functionality (i.e. create processes, signal process termination events and all that) would be ok too.

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• How can I generate a list of symbols used by a build product from a particular statically linked lib

  - by morechilli

  Say I have a visual studio project that builds a windows exe or dll from c++ source. The project statically links to several library (.lib) files. I would like to generate the subset of the available functionality in a particular .lib that the project actually links to. A very crude way to achieve this would be to remove the .lib from the linker input list. The error list on the build would then show me all the symbols that could not be found. Is there a better/proper way to generate this list, I'm happy with a solution that can be run as a custom build step in the project or one that runs against a built binary. I've looked at both the linker and dumpbin command line options but have not seen anything appropriate.

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• Expand / Collapse Swimlane (Domain Specific Language) C#

  - by Tejas

  I have multiple swimlanes on the surface, Is it possible to have expand / collapse functionality to these swimlanes?. My swimlanes are going to contain different shapes (Image Shapes), Geometry shape etc. I have tried the nesting of a geometry shpes but it only contains the geometry shapes not image shapes i.e. I have already created a Geometry shape with it's type as a RectangleD and by writing its partial class I have overridden the Expand() and Collapse() methods but to no avail because this particular Shape (Container) going to contain only Geometry shapes and not the Image shapes. Now I am trying to expand / collapse the swimlanes itself. Please let me know if anyone has done this before.

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• What JavaScript framework to choose? JQuery+JQueryUI, Dojo or ExtJS?

  - by Ivan

  I am choosing a JavaScript Framework to master and use extensively in all my future projects (mostly working with relational DATA, web services via AJAX and implementing complex rich client UIs). Now I am choosing between JQuery+JQueryUI, Dojo and ExtJS. What should I choose? 1st priority is power and functionality, 2nd priority is beauty and maintainability of code and ease of use, 3rd priority is flexibility and modularity, 4th priority is speed and size. IE compatibility hardly matters, I'd like it to be modern, legacy-free and standard-conformant.

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• I am looking for an actual functional web browser type control for .NET, maybe a C++ LIBRARY#$??$?

  - by Joshua

  I am trying to emulate a web browser in order to execute JavaScript code and then parse the DOM. The System.Windows.Forms.WebBrowser object does not give me the functionality I need. It let's me set the headers, but you cannot set the proxy or clear cookies. Well you can, but it is not ideal and messes with IE's settings. I've been extending the WebBrowser control pinvoking native windows functions so far, but it is really one hack on top of another. I can mess with the proxy and also clear cookies and such, but this control has its issues as I mentioned. I found something called WebKit .NET (http://webkitdotnet.sourceforge.net/), but I don't see support for setting proxies or cookie manipulation. Can someone recommend a c++/.NET/whatever library to do this: Basically tell me what I need to do to get an interface to similar this in .NET: string FetchBrowserParsedHtml(Uri url, WebProxy p, int timeoutSeconds, byte[] headers, byte[] postdata); void ClearCookies(); I am not responsible for my actions.

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• Auto save changed text in richtextbox to database

  - by user2519407

  I have created one simple note taking application in jquery & php. Current functionality is like when user clicks save button it sends a ajax request with complete data to update it in db(mysql). All works well. But now I want to auto save only changed text while user typing. I don't want to send entire text to server again and again in text change event. It should send only text which has changed. For Ex: This is saved text. When user continues typing. This is saved text. Unsaved text.. It should be able to send only "Unsaved text.." to server to update in db. How can i implement this in jquery & server side script.? Any Idea..?

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• jquery onclick function not firing with rails link_to_remote

  - by RahTha

  In the js file of the page, inside $(document).ready(function() {} i have $(".school a").live("click", function (e){ e.preventDefault(); ....; jsFunc(param1, param2, param3); }); Now the div with the class school has tags generated by rails link_to_remote with :url, :action, :before, :html. On clicking on this link it does all that it should do with regards to link_to_remote, but somehow the onclick event in the document.ready does not attach to it. Why would this be happening? The jsFunc all it does is post to a url async-ly, i figured out that stuffing that post url in the :before of the link_to_remote would work - but is there a more elegant way of just being able to use the attach functionality

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• How to let an average user design a boolean expression graphically

  - by Svein Bringsli

  In our application there's a list of customers, and a list of keywords (among other things). Each customer can have a number of keywords, but it's not mandatory. So for instance, one customer can have the keywords "retail" and "chain", one can have only "contractor" and a third can have none at all. I want to let the user make a selection of customers based on these keywords, but not having to write (retail AND chain) or contractor and not wholesale I would like to make it as user-friendly as possible, and ideally with only "simple" controls, like checkboxes, comboboxes etc. Does anyone have any suggestions on how to design this? Or maybe some examples of applications where there are similar functionality?

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• git init template, replacing modified hooks

  - by Roy Kolak

  I am constantly updating my local git hooks. I have a repo to house my .git template. This means that I am constantly running git init --template=../git-template to update repos with my hook changes. Problem: Everytime I run git init --temp..., I need to first remove the hooks in .git/hooks that will be replaced with the updated hooks. This is annoying. I know I can script the removal of these hooks from the repo that I want to update, but is this functionality built into git already?

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• C#: Efficiently search a large string for occurences of other strings

  - by Jon

  Hi, I'm using C# to continuously search for multiple string "keywords" within large strings, which are = 4kb. This code is constantly looping, and sleeps aren't cutting down CPU usage enough while maintaining a reasonable speed. The bog-down is the keyword matching method. I've found a few possibilities, and all of them give similar efficiency. 1) http://tomasp.net/articles/ahocorasick.aspx -I do not have enough keywords for this to be the most efficient algorithm. 2) Regex. Using an instance level, compiled regex. -Provides more functionality than I require, and not quite enough efficiency. 3) String.IndexOf. -I would need to do a "smart" version of this for it provide enough efficiency. Looping through each keyword and calling IndexOf doesn't cut it. Does anyone know of any algorithms or methods that I can use to attain my goal?

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• Why is String final in Java?

  - by Alex

  From when I learned that the class java.lang.String is declared as final in Java, I was wondering why is that? I didn't find any answer back then, but this post: How to create a replica of String class in Java? reminded me of my query. Sure, String provides all the functionality I ever needed, and never thought of any operation that would require an extension of class String, but still you'll never know what someone might need! So, does anyone know what was the intent of the designers when they decided to make it final? See also: Why is String a sealed class in C#?

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• ASP.NET MVC, JSON & non JavaScript clients

  - by redsquare

  I need to ensure that an application I am developing is accessable and also works with JavaScript turned off. I just need a pointer to assist with the following. I had 3 'chained' select boxes and I wanted JavaScript enabled clients to have a nice Ajax experience. I can easily write the required functionality to populate the chained boxes on the change event of the preceeding select using jQuery and JSON with a WCF service. However what about the non JavaScript client? Would I wrap a submit next to the select and place these inside their own form to post back with a certain action or different querstring parameter? Can the same controller give me a partial JSON response as well as feeding the full HTML response. Can anyone point me to a good demo that utilises both JSON and normal HTTP posts to produce the same result in ASP.NET MVC. All ASP.NET MVC demo/examples I see forget about the non JavaScript enabled client.

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