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• Better name needed for applying a function on elements of a container

  - by stefaanv

  I have a container class (containing a multi-index container) for which I have a public "foreach" member-function, so users can pass a functor to apply on all elements. While implementing, I had a case where the functor should only be applied to some elements of a range in the container, so I overloaded the foreach, to pass some valid range. Now, in some cases, it was worthwhile to stop on a certain condition, so practically, I let the foreach stop based on the return-value of the function. I'm pleased with how the system works, but I have one concern: How should a "foreach" on a range, with stop conditions be called? Anyone knows a generic, clear and concise name?

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• onbeforeunload dilemma: iframe breaking vs. annoying message on refresh/back buttons click

  - by Tossapol

  I'm implementing a search service called SearchInsideOut. http://bit.ly/97SFyW This search service simply replaces web page results by full web pages (Yes, I used iframe). The problem I have to deal with is iframe-breaking pages. The promising solution I found is using onbeforeunload to let users decide whether to stay or leave my site. But this also creates another annoying behavior. When users click other links in my site, onbeforeunload will also be triggered. Fortunately, I could solve this case by placing window.onbeforeunload=null in the onclick event of those links of my site. Unfortunately, I have no idea how to detect external events like clicking "refresh/back" buttons. What should I do to solve this difficulty? All suggestions and comments are highly appreciated.

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• Best way to implement symfony admin components

  - by Chris T

  I am coding a backend in symfony using the sfThemePlugin (part of sympal). The dashboard should allow for new "admin plugins" to be added fairly easily. What I'd like is to have a config.yml config like this: sf_easy_admin_plugin: enabled_admin_dashboard_plugins: [Twitter, QuickBlogPost, QuickConfig] and when these are set it includes the correct components into the template. I'd like to have each one be in it's own plugin (sfTwitterEasyAdminModule, sfQuickBlogPostEasyAdminModule) or have them all bundled in one (sfEasyAdminModules). Is there anyway to accomplish this? As far I know symfonys include_component() only let's you include components from the current module and not from other plugins. Each "component" or admin plugin should render an icon for the dashboard and a html form that will be hidden until the user clicks the icon.

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• Rails routing: how to mix "GET" and "PUT"

  - by thermans

  Not sure how to frame this question (I'm still wrapping my head around Rails). Let's try this: Say I wanted to implement the user side of Ryan Bates' excellent railscast on nested models. (He shows how to implement a survey where you can add and remove questions and answers dynamically). I want the user's side of this: to be able to answer questions and, not in the tutorial, be able to add comments. It seems to me that you have to implement a view that shows the questions and answers, allow selection of the answers, and the input of comments. So there would need to be a way to show the information, but also update the model on input, right? I know I'm not explaining this very well. I hope you understand what I'm getting at. Is it just a question of setting up the right routes? Or is there some controller mojo that needs to happen?

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• What are the effects of using VS2005 to migrate from .NET 1.1

  - by andy

  Hey guys, I'm working on some legacy code for a client, involving Microsoft Content Management System (MCMS). Currently, everything is local, the code, MCMS, SQLServer, and IIS (5.x). I copied the project folder, and then opened the new copied solution in VS2005, and let it do it's conversion thing. But now nothing works. I've nnotice there have been some changes to IIS profile. What are the extent of these changes...?? Also, my VS2003 fails to recognize the Web Project?? Anyone have any idea what's going on? cheers!

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• Richfaces Calendar Minimum and Maximum Dates

  - by DaUltimateTrooper

  Hello everybody! My problem is making the RichFaces calendar restricting the dates to be allowed to be chosen by the user. Let's say I want to allow only the dates of this month and the dates of the next month to be chosen by the user. I used the preloadDateRangeStart and preloadDateRangeEnd attributes but they did nothing. I created my own CalendarDataModel which uses the preloadDateRangeStart and preloadDateRangeEnd and enables the items but the calendar on the screen allows only the dates of the current month to be selected. Note that the preloadDateRangeStart is today's date and preloadDateRangeEnd is today's date plus 2 months. I am missing something here for sure. Can someone help me please?

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• With PHP and AJAX, Can two clients inter-exchange data without MySQL?

  - by Devyn

  Hi, Let's assume I'm developing a AJAX, PHP chess game. During the game, one movement of a player will be notified to the another but we are not saving that information. Normally, we used to store in MySQL every time a player makes movement and show update position to another player. What I want is to reduce MySQL load as much as possible and server is not interested in movements between two players. Server will only save final result like who wins. So what should I do?

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• How do I list all cron jobs for all users?

  - by yukondude

  Is there a command or an existing script that will let me view all of a *NIX system's scheduled cron jobs at once? I'd like it to include all of the user crontabs, as well as /etc/crontab, and whatever's in /etc/cron.d. It would also be nice to see the specific commands run by run-parts in /etc/crontab. Ideally, I'd like the output in a nice column form and ordered in some meaningful way. I could then merge these listings from multiple servers to view the overall "schedule of events." I was about to write such a script myself, but if someone's already gone to the trouble...

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• Should downcasting be avoided while using a class hierarchy in C++?

  - by neuviemeporte

  Let's say I'm writing an application which works with projects, and exposes different functionality depending on the type of the project. I have a hierarchy of classes for the different types of projects: class AbstractProject { }; class ProjectA : public AbstractProject { }; class ProjectB : public AbstractProject { }; class ProjectC : public AbstractProject { }; Now, I was planning to have an AbstractProject *_currentProject pointer as a member in the application's main class, pop up a dialog box on startup and based on the selection, do: _currentProject = new ProjectB(); // e.g. Later, I'll have to downcast the pointer to the specific type to utilize the functionality specific to different Project-s. Somehow this makes me feel uneasy. Is there a Better Way of doing this?

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• Icon backdrop on Samsung Galaxy S? how to change this?

  - by AKh

  Hi all, I see a backdrop being added to my launch icon on the Samsung Galaxy S devices. I need this backdrop changed to a custom backdrop which we created. I know this can be changed since apps like"Daily Briefing" have their own cloud like backdrop making the launch icon look really rich. If anyone does know how to change this backdrop please let me know. I am talking about the background image set behind the icons. Eg: in the below image on the 1st row can you notice the yellow backdrop for Memo app, Green backdrop for Mini Diary app, similarily in the 3rd row notice the green backdrop behind the MAIL app.... I need to change these backdrops. Thanks in advance. Appreciate your help.

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• Java long task - Did it stop writing to file?

  - by rockit

  I am writing a lot of data to a file, and while keeping my eye on the file it eventually stopped growing in size. Essentially my task is getting information from a database, and printing out all non-unique values in column A. Since there are many rows to the database table, and the database table is across my network, this is taking days to complete. Thus I'm concerned that since the file isn't growing, that it isn't actually writing to the file anymore. Which is odd, I have no "catch"'s in my code, so if there was a problem writing to file, wouldn't it have thrown an error?! Should I let the task complete (estimate 2-3 days from today), or is there something else that I don't know going on here making my application not write to the file?! my algorithm goes something like this Declare file Create new file Open file for writing get database connection get resultset from database for each row in the resultset - write column "A" to file - if row# % 100000 then write to screen "completed " + row# + " rows" when no more rows exist close file write to screen - "completed"

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• .NET - Verify and Install .NET Framework 3.5 before running application

  - by Tufo

  PLEASE READ THE FULL QUESTION BEFORE POST YOUR ANSWER Hello guys! I'm currently developing a "Extremelly customized Installer Application" in C# for installing a old classic ASP application. It'll be used during the 2.0 version is developed (ASP.NET MVC with C#). As its so different from the efault install packages, I've made it as normal windows application, not as setup application (a setup application don't let us customize so much as I need). And here is the problem: As its a windows application, I must "Release" it and send the compiled .EXE with the .DLLs, I must not "Publish" because if i do so, the published .EXE will "install the installer" and not my application. I need a way to verify and install the .NET Framework 3.5 like a bootstrap package prerequisite used in publishing option, but remember that I'm not publishing, I'm doing a "Release" build. Thanks for any help!

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• how to structure code that uses std::rel_ops

  - by R Samuel Klatchko

  I was working on some code and wanted to make use of std::rel_ops. From what I can tell, you need to do using std::rel_ops to your source code to make use of them. But I'm not sure where the best place to put that is. Let's say I have a header file with a class that only defines the minimal operator== and operator<: // foo.h class foo { public: bool operator==(const foo &other) const; bool operator<(const foo &other) const; }; I'm not sure where to put using std::rel_ops. If I leave it out of the foo.h, then every user of foo.h needs to know the implementation detail that foo is not defining all the operators itself. But putting using std::rel_ops inside foo.h breaks the rule of thumb about not having a using in a header file. How do other people resolve this issue?

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• Maximum number of files in one ext3 directory while still getting acceptable performance?

  - by knorv

  I have an application writing to an ext3 directory which over time has grown to roughly three million files. Needless to say, reading the file listing of this directory is unbearably slow. I don't blame ext3. The proper solution would have been to let the application code write to sub-directories such as ./a/b/c/abc.ext rather than using only ./abc.ext. I'm changing to such a sub-directory structure and my question is simply: roughly how many files should I expect to store in one ext3 directory while still getting acceptable performance? What's your experience? Or in other words; assuming that I need to store three million files in the structure, how many levels deep should the ./a/b/c/abc.ext structure be? Obviously this is a question that cannot be answered exactly, but I'm looking for a ball park estimate.

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• how can we call one class's method through another class's object in php

  - by hello

  I want to know that is there any method in PHP by which i can call one class's method from another class object. let me clear here is one class class A() { public function showData(){ //here is method of class A } } // here is another class class B(){ public function getData(){ //some method in class B } } //now i create two objects $objA= new class A(); $objB=new class B(); now i want to call this $objB->showData();<--- is that possible .. by any how method( using public, inheritence,child parent etc...) please help me

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• MaximumErrorCount has now effect

  - by Rob Bowman

  Hi I'm quite new to SSIS - using 2008 version. I have a job that uses a few data flow tasks. On the third one I'm getting a primary key violation on the last row that it needs to insert, but only sometimes! I'd like to ignore this problem for now and let the job continue. I have set the MaximumErrorCount property to 10 for the DataFlowTaks, the SequenceContainer and for the Package but still taks fails and this causes the package to stop. Could anyone please advise how I can get the package to ignore the error? Thanks Rob.

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• Using Visual Studio to create web application in Sharepoint 2010

  - by bryan0010

  Hello, I am looking for pointers, examples, etc. to create a basic application in sharepoint 2010 using visual studio. The application would show a list on page 1 (driven by linq entities). When you click a row, it shows a details page. I've gone through the tutorials but could not find a basic crud-like example as explained above. Any help would be greatly appreciated. If I missed something in one of the tutorials, please let me know. To summarize, in a very generic way; I am looking for information on how to display two web application pages and have the user click a link or control to move through pages. Regards, Bryan

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• Non US characters in section headers for a UITableView

  - by epatel

  I have added a section list for a simple Core Data iPhone app. I followed this so question to create it - How to use the first character as a section name but my list also contain items starting with characters outside A-Z, specially Å,Ä and Ö used here in Sweden. The problem now is that when the table view shows the section list the three last characters are drawn wrong. See image below It seems like my best option right now is to let those items be sorted under 'Z' if ([letter isEqual:@"Å"] || [letter isEqual:@"Ä"] || [letter isEqual:@"Ö"]) letter = @"Z"; Someone that have figured this one out? And while I'm at it... 'Å', 'Ä' and 'Ö' should be sorted in that order but are sorted as 'Ä', 'Å' and 'Ö' by Core Data NSSortDescriptor. I have tried to set set the selector to localizedCaseInsensitiveCompare: but that gives a out of order section name 'Ä. Objects must be sorted by section name' error. Seen that too?

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• Specifying default value for django hidden form field - bone DRY?

  - by jMyles

  So let's say at the last minute (in the view) I decide I want to specify a default for a field and make it hidden, like so: form.fields['coconut'] = forms.ModelChoiceField(label="", widget=forms.HiddenInput(), queryset=swallow.coconuts.all(), initial=some_particular_coconut) My question is this: Do I really need to specify queryset here? I mean, I already know, from initial, exactly which coconut I'm talking about. Why do I also need to specify that the universe of available coconuts is the set of coconuts which this particular swallow carried (by the husk)? Is there a way I can refrain from specifying queryset? Simply omitting causes django to raise TypeError. If indeed it is required, isn't this a bit damp?

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• Hot to log in to a website using installed twill?

  - by brilliant

  Hello, everybody!!!! I have just successfully installed TWILL on my computer with the help of one very supportive member of "StackOverflow" (you can check it out HERE) and have tried to run one of the simple examples on the twill documentation page (you can see that page HERE). Here is that example: Let's say my username on www.slash.org is lynxye and my password is mammal. When I try to enter that exanple code into my Python prompt, I can only enter the first line of the code bexcause when I click on "Enter" to start a new line, I get some error messages right away: The same happens when I try to enter this code into my terminal: I think I miss out on some basics here. Perhaps, I need to create a file that would contain that code and then run that file somehow, but I really don't know where I need to create that file and with what extensdion. Can anyone, please, help me with this?

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• How to use Console with a Winform App ?

  - by asksuperuser

  Let's say I have some code inside a Winform. I'd also like to output to Console like this: Reader = command.ExecuteReader(); while (Reader.Read()) { string thisrow = ""; for (int i = 0; i < Reader.FieldCount; i++) thisrow += Reader.GetValue(i).ToString() + ","; Console.WriteLine(thisrow); } connection.Close(); It doesn't crash but I can't see any console. Why ?

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• Can the lock function be used to implement thread-safe enumeration?

  - by Daniel

  I'm working on a thread-safe collection that uses Dictionary as a backing store. In C# you can do the following: private IEnumerable<KeyValuePair<K, V>> Enumerate() { if (_synchronize) { lock (_locker) { foreach (var entry in _dict) yield return entry; } } else { foreach (var entry in _dict) yield return entry; } } The only way I've found to do this in F# is using Monitor, e.g.: let enumerate() = if synchronize then seq { System.Threading.Monitor.Enter(locker) try for entry in dict -> entry finally System.Threading.Monitor.Exit(locker) } else seq { for entry in dict -> entry } Can this be done using the lock function? Or, is there a better way to do this in general? I don't think returning a copy of the collection for iteration will work because I need absolute synchronization.

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• In SQL, why is "Distinct" not used in a subquery, when looking for some items "not showing up" in th

  - by Jian Lin

  Usually when looking for some items not showing up in the other table, we can use: select * from gifts where giftID not in (select giftID from sentgifts); or select * from gifts where giftID not in (select distinct giftID from sentgifts); the second line is with "distinct" added, so that the resulting table is smaller, and probably let the search for "not in" faster too. So, won't using "distinct" be desirable? Often than not, I don't see it being used in the subquery in such a case. Is there advantage or disadvantage of using it? thanks.

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• CSS: How the backgrounds can extend the border and overlap?

  - by AlexStack

  I'm designing a navigation bar as shown in image below (a) with the following code: <ul> <li class="unselected">Step 1</li> <li class="selected">Step 2</li> <li class="unselected">Step 3</li> <li class="unselected">Step 4</li> <li class="unselected">Step 5</li> </ul> I want to have one background image for unselected steps (d) and one for the selected step (c). For simplicity let's assume Step 1 and Step 5 use the same background as well. I want to adjust the button background in HTML only with a class name. The question is how can I achieve the result with CSS? I just want to know how background of two neighbor elements can overlap each other?

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• Access to an "upper" instance of a class from another instance of a different class

  - by BorrajaX

  Hello everyone! I have a tricky question and probably what I want to do is not even possible but... who knows... Python seems very flexible and powerful... I'd like to know if there's a way to access to the class (or its fields) where an object is instanciated. Let's say I have: def Class1: def __init__(self): self.title = "randomTitle" self.anotherField = float() self.class2Field = Class2() and the class whose type will be the class2Field: def Class2: def __init__(self): self.field1 = "" self.field2 = "" # . . . # I'd like to know if there's a way to access the instance of Class1 from the instance of Class2 that is declared in Class1 (meaning, accessing the fields of Class1 from the variable self.class2Field in that Class1 instance) I know I can always change the init in Class2 to accept a Class1 parameter, but I'd like to know if there's another way of "climbing" through the class hierachy... Thank you very much!

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