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  • How to persist a very abstract data type between sessions: PHP

    - by Greelmo
    I have an abstract data type that behaves much like stack. It represents a history of "graph objects" made by a particular user. Each "graph object" holds one or more "lines", a date range, keys, and a title. Each "line" holds a sql generator configured for a particular subset of data in my db. I would like for these "histories" to be available to users between their sessions. It will be in the form of a tab that reads something like "most recent graphs". What do you believe to be the best way to persist this type of data between sessions. This application could get rather large, so efficiency is a concern. Thanks in advance.

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  • How do I get the entity framework to work with archive flags?

    - by Orion Adrian
    I'm trying to create a set of tables where we don't actually delete them, but rather we set the archive flags instead. When we delete an entity, it shouldn't be deleted, it should be marked as archived instead. What are the programming patterns to support this? I would also prefer not to have to roll out my own stored procs for every table that have these archive flags if there is another solution.

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  • Can one Python project use both 2.x and 3.x code?

    - by Begbie00
    Hi all - I'm going to start on a long (~1-year) programming project in Python. I want to use wxPython for my GUI (supports 2.6), but I also want to use 3.1 for the rest of the project (to start using the 3.x syntax). Is there any way for me to design a project that mixes 2.x and 3.x modules? Or should I just bite the bullet and use either 2.x (preferred, since I really want to learn wxPython) or 3.x throughout? Thanks, Mike

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  • Difference between Document-oriented-DB and Bigtable clones

    - by chen
    We are looking for a suitable storage engine for our weblog history data. We looked at Bigtable's paper and understand it is suitable to us well. However, I also understand that Document-oriented-DB such as MongoDB seems to provide a little more powerful schema power -- i.e, it can model our data as well. I wonder how nowadays ppl choose a scalable NoSQL DB --- I read enough articles like "we looked at A, B and C, and we decided to use C". But I'd like to see some benchmark number. What I am saying is that if MongoDB and the like can provide same level of performance as Bigtable clones, why don't web companies choose it (preparing to deal with various potentially more complex data problem)? Thanks, By the way, I read an article (which convinced me at the moment) saying Cassandra does not fit the M/R operation, any comments?

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  • Modify cmd.exe properties using the command prompt

    - by CodexArcanum
    Isn't that nicely recursive? I've got a portable command prompt on my external drive, and it has a nice .bat file to configure some initial settings, but I'd like more! Here's what I know how to set from .bat: Colors = (color XY) where x and y are hex digits for the predefined colors Prompt = (prompt $p$g) sets the prompt to "C:\etc\etc " the default prompt Title = (title "text") sets the window title to "text" Screen Size = (mode con: cols=XX lines=YY) sets the columns and lines size of the window Path = (SET PATH=%~d0\bin;%PATH%) sets up local path to my tools and appends the computer's path So that's all great. But there are a few settings I can't seem to set from the bat. Like, how would I set these up wihtout using the Properties dialogue: Buffer = not screen size, but the buffer Options like quick edit mode and autocomplete Popup colors Font. And can you use a font on the portable drive, or must it be installed to work? Command history options

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  • TableVIew scrolling vertically

    - by senthilmuthu
    hi, i i want to activate scrolling vertically through programming for 2 UITableview at sametime?(one table view length 160,another one has 160).is it possible ?In one Viewcontroller's view i have scrollview, on that i have two tableviews(instead of one,like two column)..how can i scroll vertically both at same time?any help please?

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  • which collaborative tools do you use to communicate between team members [closed]

    - by john
    I work for a small company and would like to set up some sort of a collaborative tool so that team members can share thoughts, upload documents...something like sharepoint maybe, but not that suffisticated. Only good option I've seen so far is joomla CMS. Just want to get an opinion of the community on which tools they have used for these purposes. I know this is not programming related but I thought stackoverflow community would be good to get an opinion on this.

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  • Help me choose between Go and Io

    - by Robert Smith
    During the following months I'll have some spare time so I thought of picking up a new programming language.I've been reading some articles about Go and Io and both of them look interesting and very promising so I'm stuck making a decision about which one to pick up next. I'm mainly interested in distributed systems and concurrency. Any help is greatly appreciated. Thanks.

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  • Running DOS command through C# just opens blank cmd window

    - by Mohit Deshpande
    I was trying to execute a command through C#, but when I run the following code, a blank cmd window just opens up. The code: string command = string.Format(@"adb install C:\Users\Mohit\Programming\Android_Workspace\{0}\bin\{0}.apk", appName); ProcessStartInfo cmdsi = new ProcessStartInfo("cmd.exe"); cmdsi.Arguments = command; Process cmd = Process.Start(cmdsi); What could be wrong? I am sure the syntax is right.

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  • Why is the volatile qualifier used through out std::atomic?

    - by Caspin
    From what I've read from Herb Sutter and others you would think that volatile and concurrent programming were completely orthogonal concepts, at least as far as C/C++ are concerned. However, in GCC c++0x extension all of std::atomic's member functions have the volatile qualifier. The same is true in Anthony Williams's implementation of std::atomic. So what's deal, do my atomic<> variables need be volatile or not?

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  • Getting started with F#

    - by Ian Quigley
    What's a good way to get into F# programming? What's a good "Hello world" example and what simple examples can show me why I want to use it over C#. Also what tools do I need? I have WindowsXP, Visual Studio 2008 etc.

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  • Scripting Languages vs. Compiled Languages for web development

    - by Austin Hyde
    Though I come from a purely PHP background on the web development side of programming, I have also spent much time with C# and C++ on the desktop. I don't really want to spark any flame wars, but: When should you use scripting languages over compiled languages for website development? (and vice versa) Just to clarify, for the sake of this question, I define a "scripting language" to mean an interpreted language like PHP, Python, or Ruby, and a "compiled language" to mean a strongly typed, compiled language like C#, C++, Java, or VB.

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  • TreeView Controls - HTREEVIEW

    - by nXqd
    I'm new to win32 API programming and I try to understand source code of treeview from codeproject. But I really don't understand this : BOOL TreeView::DoNotify(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam) { // blah blah HTREEVIEW Selected = (HTREEITEM)SendDlgItemMessage(hWnd,ID_TREE,TVM_GETNEXTITEM,TVGN_CARET,(LPARAM)Selected); // halb halb } It doesn't work ( Selected is used without initializing) until I declare Selected as global variable. Thanks for reading this and I need your help .

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  • reading binary datafile and writing into decimal no file

    - by swaroop b banerjee
    exp data is generated by my mc scaler card as a binary file with first 511 bytes as header and then 24 bit data followed by four bit roi data. i am not a expert in programming. i do understand a little. I would like to convert this file into a file (without header) decimal nos with first col as channel no (1 to 8191) then the data (24 bit) then the Roi data (4 bit). I am looking for source code in c or qbasic. thanks

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  • Dataset field DBNull -> int?

    - by BobClegg
    SQLServer int field. Value sometimes null. DataAdapter fills dataset OK and can display data in DatagridView OK. When trying to retrieve the data programmatically from the dataset the Dataset field retrieval code throws a StronglyTypedException error. [global::System.Diagnostics.DebuggerNonUserCodeAttribute()] public int curr_reading { get { try { return ((int)(this[this.tableHistory.curr_readingColumn])); } catch (global::System.InvalidCastException e) { throw new global::System.Data.StrongTypingException("The value for column \'curr_reading\' in table \'History\' is DBNull.", e); } Got past this by checking for DBNull in the get accessor and returning null but... When the dataset structure is modified (Still developing) my changes (unsurprisingly) are gone. What is the best way to handle this situation? It seems I am stuck with dealing with it at the dataset level. Is there some sort of attribute that can tell the auto code generator to leave the changes in place?

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  • How to migrate project from RCS to CVS?

    - by Norman Ramsey
    I have a 20-year-old project that I would like to migrate from RCS to git, without losing the history. All web pages suggest that the One True Path is through CVS. But after an hour of Googling and trying different scripts, I have yet to find anything that successfully converts my RCS project tree to CVS. I'm hoping the good people at Stackoverflow will know what actually works, as opposed to what is claimed to work and doesn't. (I searched Stackoverflow using both the native SO search and a Google search, but if there's a helpful answer in the database, I missed it.) Things that don't work that I still remember: The rcs-to-cvs script that ships in the contrib directory of the CVS sources The rcs-fast-export tool at http://git.oblomov.eu/rcs-fast-export The rcs2cvs script found in a document called "CVS-RCS- HOW-TO Document for Linux"

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  • How to export image from Air app directly into a powerpoint slide programmatically

    - by user306584
    Apologies if this has been answered before or if it's too obvious - pointers are greatly appreciated if this is the case. What I'm trying to do: 1) have a way to save / copy screenshot from an Air app 2) automatically paste such screenshot into a new powerpoint slide in the current presentation I have part 1 down but have no idea on how to do part 2 - I have very little experience with programming around MS apps. thank you. f

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  • Python Mindstorms RCX

    - by Kyle Schmidt
    I've got 30 unopened Lego Mindstorms kits that I'd love to use in my intro programming class to do some simple robotics stuff at the end of the year. We're using Python in the class, so I'd prefer there to be a way for the kids to write the programs in Python. Unfortunately, these are old kits with RCX bricks - not the newer NXT ones, so most of the projects like NXT_Python can't help me. Is there any way to make that happen?

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  • How would you audit ASP.NET Membership tables, while recording what user made the changes?

    - by Pete
    Using a trigger-based approach to audit logging, I am recording the history of changes made to tables in the database. The approach I'm using (with a static sql server login) to record which user made the change involves running a stored procedure at the outset of each database connection. The triggers use this username when recording the audit rows. (The triggers are provided by the product OmniAudit.) However, the ASP.NET Membership tables are accessed primarily through the Membership API. I need to pass in the current user's identity when the Membership API opens its database connection. I tried subclassing MembershipProvider but I cannot access the underlying database connection. It seems like this would be a common problem. Does anyone know of any hooks we can access when the ASP.NET Membership makes its database connection?

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