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  • Delphi app manifest file problems under WinXP and Win7

    - by Ronaldo Junior
    My last question "List service and services status under Win-7" made me start working on a solution that gives my app the admin privileges under Windows Vista onward based on a .manifest file. I was not sure about continue the previous question with this matter since they are not the same so here is another question: My app now works fine under Win 7 whether or not I run it "as admin" because of the manifest file. My manifest file is as follow: <?xml version="1.0" encoding="UTF-8" standalone="yes"?> <assembly xmlns="urn:schemas-microsoft-com:asm.v1" manifestVersion="1.0"> <assemblyIdentity version="1.6.0.5" processorArchitecture="X86" name="ServiceMonitorPro" type="win32"/> <description publisher="Powershield Ltd" product="Powershield Service Monitor">Powershield Service Monitor</description> <trustInfo xmlns="urn:schemas-microsoft-com:asm.v2"> <security> <requestedPrivileges> <requestedExecutionLevel level="requireAdministrator" uiAccess="false"/> </requestedPrivileges> </security> </trustInfo> </assembly> When the application runs on windows 7 or Vista, the UAC comes with a dialog like this: How can I replace the "unknow" publisher? The other and bigest problem is, even thou the app runs with no problem under Win7 or Vista, under WinXP it is now crashing with the message: "This application has failed to start because the application configuration is incorrect. Reinstalling the application may fix this problem." Another thing I would like to add: If I add reference (uses clause) to XPMan the app works fine on WinXP but then it my .manifest file makes no diference under Vista or Win7.

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  • kanban scrumish tool(s) to get started

    - by Davide
    After investigating a little bit scrum and kanban, I finally read this answer and decided to start using kanban, picking something from scrum (note that I'm working mostly by myself, and I do have read this question and its answers). Now, my question is: which tool would be best to get started? whiteboard and postit agilezen.com JIRA with greenhopper a spreadsheet (possibly on Google Docs) brightgreenprojects.com Agilo Target Process something else (please specify) Notes about each: I would lean towards the whiteboard, but there are several drawbacks (e.g. cannot make automatic charts, time measurements, metrics, and sometimes I work from home - where I need it most - and it's not convenient to carry :-) I don't want to remember another username/password (I promised to myself to signup only to OpenID-enabled services) My employer has JIRA but my group doesn't use it - I might ask for an account (it shouldn't require another password) and maybe later involve the rest of the group. But I don't know if they are using greenhopper and if it's a big deal installing it. I generally hate spreadsheets maybe overkill? I'd be happy to have a localhost instance, but it could be problematic to give access to the whole group (per network/firewalls) - not a deal-breaker but surely a concern What I'd like to get from this? being more productive tracking how much time I spend in any given task, possibly discussing the issue with my supervisor tracking what "blocks" me most often immediately see where I am compared to my schedule manage in a better way my long todo list (e.g. answering faster to the "what I should do next?" question) Do you have any suggestion? Note on the scrumish tag: read the Henrik Kniberg's PDF. He first introduced the definition of scrumish on page 9.

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  • MySQL performance - 100Mb ethernet vs 1Gb ethernet

    - by Rob Penridge
    Hi All I've just started a new job and noticed that the analysts computers are connected to the network at 100Mbps. The ODBC queries we run against the MySQL server can easily return 500MB+ and it seems at times when the servers are under high load the DBAs kill low priority jobs as they are taking too long to run. My question is this... How much of this server time is spent executing the request, and how much time is spent returning the data to the client? Could the query speeds be improved by upgrading the network connections to 1Gbps? (Updated for the why): The database in question was built to accomodate reporting needs and contains massive amounts of data. We usually work with subsets of this data at a granular level in external applications such as SAS or Excel, hence the reason for the large amounts of data being transmitted. The queries are not poorly structured - they are very simple and the appropriate joins/indexes etc are being used. I've removed 'query' from the Title of the post as I realised this question is more to do with general MySQL performance rather than query related performance. I was kind of hoping that someone with a Gigabit connection may be able to actually quantify some results for me here by running a query that returns a decent amount of data, then they could limit their connection speed to 100Mb and rerun the same query. Hopefully this could be done in an environment where loads are reasonably stable so as not to skew the results. If ethernet speed can improve the situation I wanted some quantifiable results to help argue my case for upgrading the network connections. Thanks Rob

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  • Packaging for Ubuntu - Web Application

    - by Sam
    A web application has no make file unlike C++ or anything like that. However, it needs to be placed into specific directories...e.g /var/www. I'm new to linux packaging, so my question is, how do I package my app into a .deb such that when its being installed, it gets put into something like /etc/myprogram/bundles/myprogram-3.4? Mine in particular is a java app running on apache tomcat. I've managed to create a .deb file by reading painstakingly every word in http://www.debian.org/doc/manuals/maint-guide. However when I follow the instructions I end up getting 1) a .deb file that is 1.7kb instead of the ~240mb that it should be, because apparently it is lacking all my source code. 2) confused because I don't know whether I was supposed to write some sort of makefile. I am not even sure where to go about learning the answer to that question, and then I'd have to deal with how to write a makefile. I've posted a similar question to ubuntuforums, but I feel like I'm more likely to get a response here.

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  • Structuring projects & dependencies of large winforms applications in C#

    - by Benjol
    UPDATE: This is one of my most-visited questions, and yet I still haven't really found a satisfactory solution for my project. One idea I read in an answer to another question is to create a tool which can build solutions 'on the fly' for projects that you pick from a list. I have yet to try that though. How do you structure a very large application? Multiple smallish projects/assemblies in one big solution? A few big projects? One solution per project? And how do you manage dependencies in the case where you don't have one solution. Note: I'm looking for advice based on experience, not answers you found on Google (I can do that myself). I'm currently working on an application which has upward of 80 dlls, each in its own solution. Managing the dependencies is almost a full time job. There is a custom in-house 'source control' with added functionality for copying dependency dlls all over the place. Seems like a sub-optimum solution to me, but is there a better way? Working on a solution with 80 projects would be pretty rough in practice, I fear. (Context: winforms, not web) EDIT: (If you think this is a different question, leave me a comment) It seems to me that there are interdependencies between: Project/Solution structure for an application Folder/File structure Branch structure for source control (if you use branching) But I have great difficulty separating these out to consider them individually, if that is even possible. I have asked another related question here.

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  • signalR groups - connecting/disconnecting and sending - am I missing something?

    - by Terry_Brown
    very new to signalR, and have rolled up a very simple app that will take questions for moderation at conferences (felt like a straight forward use case) I have 2 hubs at the moment: - Question (for asking questions) - Speaker (these should receive questions and allow moderation, but that will come later) Solution lives at https://github.com/terrybrown/InterASK After watching a video (by David Fowler/Damian Edwards) (http://channel9.msdn.com/Shows/Web+Camps+TV/Damian-Edwards-and-David-Fowler-Demonstrate-SignalR) and another that I can't find the URL for atm, I thought I'd go with 'groups' as the concept to keep messages flowing to the right people. I implemented IConnected, IDisconnect as I'd seen in one of the videos, and upon debugging I can see Connect fire (and on reload I can see disconnect fire), but it seems nothing I do adds a person to a group. The signalR documentation suggests "Groups are not persisted on the server so applications are responsible for keeping track of what connections are in what groups so things like group count can be achieved" which I guess is telling me that I need to keep some method (static or otherwise?) of tracking who is in a group? Certainly I don't seem able to send to groups currently, though I have no problem distributing to anyone currently connected to the app and implementing the same JS method (2 machines on the same page). I suspect I'm just missing something - I read a few of the other questions on here, but none of them seem to mention IConnected/IDisconnect, which tells me these are either new (and nobody is using them) or that they're old (and nobody is using them). I know this could be considered a subjective question, though what I'm looking for is just a simple means of managing the groups so that I can do what I want to - send a question from one hub, and have people connected to a different hub receive it - groups felt the cleanest solution for this? Many thanks folks. Terry

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  • What is the worst programming language you ever worked with? [closed]

    - by Ludwig Weinzierl
    If you have an interesting story to share, please post an answer, but do not abuse this question for bashing a language. We are programmers, and our primary tool is the programming language we use. While there is a lot of discussion about the best one, I'd like to hear your stories about the worst programming languages you ever worked with and I'd like to know exactly what annoyed you. I'd like to collect this stories partly to avoid common pitfalls while designing a language (especially a DSL) and partly to avoid quirky languages in the future in general. This question is not subjective. If a language supports only single character identifiers (see my own answer) this is bad in a non-debatable way. EDIT Some people have raised concerns that this question attracts trolls. Wading through all your answers made one thing clear. The large majority of answers is appropriate, useful and well written. UPDATE 2009-07-01 19:15 GMT The language overview is now complete, covering 103 different languages from 102 answers. I decided to be lax about what counts as a programming language and included anything reasonable. Thank you David for your comments on this. Here are all programming languages covered so far (alphabetical order, linked with answer, new entries in bold): ABAP, all 20th century languages, all drag and drop languages, all proprietary languages, APF, APL (1), AS400, Authorware, Autohotkey, BancaStar, BASIC, Bourne Shell, Brainfuck, C++, Centura Team Developer, Cobol (1), Cold Fusion, Coldfusion, CRM114, Crystal Syntax, CSS, Dataflex 2.3, DB/c DX, dbase II, DCL, Delphi IDE, Doors DXL, DOS batch (1), Excel Macro language, FileMaker, FOCUS, Forth, FORTRAN, FORTRAN 77, HTML, Illustra web blade, Informix 4th Generation Language, Informix Universal Server web blade, INTERCAL, Java, JavaScript (1), JCL (1), karol, LabTalk, Labview, Lingo, LISP, Logo, LOLCODE, LotusScript, m4, Magic II, Makefiles, MapBasic, MaxScript, Meditech Magic, MEL, mIRC Script, MS Access, MUMPS, Oberon, object extensions to C, Objective-C, OPS5, Oz, Perl (1), PHP, PL/SQL, PowerDynamo, PROGRESS 4GL, prova, PS-FOCUS, Python, Regular Expressions, RPG, RPG II, Scheme, ScriptMaker, sendmail.conf, Smalltalk, Smalltalk , SNOBOL, SpeedScript, Sybase PowerBuilder, Symbian C++, System RPL, TCL, TECO, The Visual Software Environment, Tiny praat, TransCAD, troff, uBasic, VB6 (1), VBScript (1), VDF4, Vimscript, Visual Basic (1), Visual C++, Visual Foxpro, VSE, Webspeed, XSLT The answers covering 80386 assembler, VB6 and VBScript have been removed.

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  • UINavigationController crash because of pushing and poping UIViewControllers

    - by Wayne Lo
    My question is related to my discovery of a reason for UINavigationController to crash. So I will tell you about the discovery first. Please bare with me. The issue: I have a UINavigationController as as subview of UIWindow, a rootViewController class and a custom MyViewController class. The following steps will get a Exc_Bad_Access, 100% reproducible.: [myNaviationController pushViewController:myViewController_1stInstance animated:YES]; [myNaviationController pushViewController:myViewController_2ndInstance animated:YES]; Hit the left back tapBarItem twice (pop out two of the myViewController instances) to show the rootViewController. After a painful 1/2 day of try and error, I finally figure out the answer but also raise a question. The Solutio: I declared many objects in the .m file as a lazy way of declaring private variables to avoid cluttering the .h file. For instance, #impoart "MyViewController.h" NSMutableString*variable1; @implement ... -(id)init { ... varialbe1=[[NSMutableString alloc] init]; ... } -(void)dealloc { [variable1 release]; } For some reasons, the iphone OS may loose track of these "lazy private" variables memory allocation when myViewController_1stInstance's view is unloaded (but still in the navigation controller's stacks) after loading the view of myViewController_2ndInstance. The first time to tap the back tapBarItem is ok since myViewController_2ndInstance'view is still loaded. But the 2nd tap on the back tapBarItem gave me hell because it tried to dealloc the 2nd instance. Executing [variable release] resulted in Exc_Bad_Access because it pointed randomly (loose pointer). To fix this problem is simple, declare variable1 as a @private in the .h file. Here is my Question: I have been using the "lazy private" variables for quite some time without any issues until they are involved in UINavigationController. Is this a bug in iPhone OS? Or there is a fundamental misunderstanding on my part about Objective C? Please help.

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  • Adding "this" to the parents stack for "each" in jQuery

    - by Matrym
    This question is a bit of a two-parter. First, the title question. Here's what I've got: // Report all of the parents $(this).parents().each(function(i){ // Collect the parts in a var var $crumb = ''; // Get the tag name of the parent $crumb += "<span class='tagName'>"+this.tagName+"</span>"; // And finally, report it $breadcrumbs.prepend($crumb); }); Unfortunately, this doesn't include the actual element itself, only the parents. Is there any way of saying something like "this and parents"? Now, the second question. If I were unable to add to the stack, how would I separate the guts of that function into another function, while retaining the "this" ability of it? Would it be something like: // Function to report the findings function crumble(e){ // Collect the parts in a var var $crumb = ''; // Get the tag name of the parent $crumb += "<span class='tagName'>"+this.tagName+"</span>"; // And finally, report it $breadcrumbs.prepend($crumb); }; $(this).parents().each(crumble()); Thanks in advance for your time!

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  • How to avoid reallocation using the STL (C++)

    - by Tue Christensen
    This question is derived of the topic: http://stackoverflow.com/questions/2280655/vector-reserve-c I am using a datastructur of the type vector<vector<vector<double> > >. It is not possible to know the size of each of these vector (except the outer one) before items (doubles) are added. I can get an approximate size (upper bound) on the number of items in each "dimension". A solution with the shared pointers might be the way to go, but I would like to try a solution where the vector<vector<vector<double> > > simply has .reserve()'ed enough space (or in some other way has allocated enough memory). Will A.reserve(500) (assumming 500 is the size or, alternatively an upper bound on the size) be enough to hold "2D" vectors of large size, say [1000][10000]? The reason for my question is mainly because I cannot see any way of reasonably estimating the size of the interior of A at the time of .reserve(500). An example of my question: vector A; A.reserve(500+1); vector temp2; vector temp1 (666,666); for(int i=0;i<500;i++) { A.push_back(temp2); for(int j=0; j< 10000;j++) { A.back().push_back(temp1); } } Will this ensure that no reallocation is done for A? If temp2.reserve(100000) and temp1.reserve(1000) where added at creation will this ensure no reallocation at all will occur at all? In the above please disregard the fact that memory could be wasted due to conservative .reserve() calls. Thank you all in advance!

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  • How to weed out the bad programmers from the competent ones in the interview process

    - by thaBadDawg
    I am getting ready to add another developer to my team and I want to try and fix the mistakes I made in my last hiring cycle. I like to think of myself as a competent programmer (I can be given a project, I can deliver on that project and the deliverable work with very few if any bugs) and so I ask questions that I would ask myself in an interview. I've come to the conclusion that my interviewing skills are completely lacking because the last two people I've hired interviewed incredibly well but have been less than ideal at the tasks that they've been given. My CTO (who was completely useless in giving any guidance as to how) suggested I improve on my interviewing skills. The question is this - How does one programmer interview another programmer and get an understanding of the other programmer's abilities? Edit: Though slightly different, the answers provided to this question could be of use to you. That question concerns specific interview questions while yours seems to be more general about interview approaches and not just about the questions themselves. Update: Just for the hell of it I asked two of the guys I worked with if they could do FizzBuzz. 45 minutes and 80 minutes to work it out. And these aren't bottom level guys either.

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  • ASP.NET trace level

    - by axk
    This question is related to my another question. With trace enabled I can get the following(not quite verbose) trace of a page request: [2488] aspx.page: Begin PreInit [2488] aspx.page: End PreInit [2488] aspx.page: Begin Init [2488] aspx.page: End Init [2488] aspx.page: Begin InitComplete [2488] aspx.page: End InitComplete [2488] aspx.page: Begin PreLoad [2488] aspx.page: End PreLoad [2488] aspx.page: Begin Load [2488] aspx.page: End Load [2488] aspx.page: Begin LoadComplete [2488] aspx.page: End LoadComplete [2488] aspx.page: Begin PreRender [2488] aspx.page: End PreRender [2488] aspx.page: Begin PreRenderComplete [2488] aspx.page: End PreRenderComplete [2488] aspx.page: Begin SaveState [2488] aspx.page: End SaveState [2488] aspx.page: Begin SaveStateComplete [2488] aspx.page: End SaveStateComplete [2488] aspx.page: Begin Render [2488] aspx.page: End Render Reflector shows that System.Web.UI.Page.ProcessRequestMain method which I suppose does the main part of request processing has more conditional trace messges. For example: if (context.TraceIsEnabled) { this.Trace.Write("aspx.page", "Begin PreInit"); } if (EtwTrace.IsTraceEnabled(5, 4)) { EtwTrace.Trace(EtwTraceType.ETW_TYPE_PAGE_PRE_INIT_ENTER, this._context.WorkerRequest); } this.PerformPreInit(); if (EtwTrace.IsTraceEnabled(5, 4)) { EtwTrace.Trace(EtwTraceType.ETW_TYPE_PAGE_PRE_INIT_LEAVE, this._context.WorkerRequest); } if (context.TraceIsEnabled) { this.Trace.Write("aspx.page", "End PreInit"); } if (context.TraceIsEnabled) { this.Trace.Write("aspx.page", "Begin Init"); } if (EtwTrace.IsTraceEnabled(5, 4)) { EtwTrace.Trace(EtwTraceType.ETW_TYPE_PAGE_INIT_ENTER, this._context.WorkerRequest); } this.InitRecursive(null); So there are these EwtTrace.Trace messages which I don't see I the trace. Going deeper with Reflector shows that EtwTrace.IsTraceEnabled is checking if the appropriate tracelevel set: internal static bool IsTraceEnabled(int level, int flag) { return ((level < _traceLevel) && ((flag & _traceFlags) != 0)); } So the question is how do I control these _traceLevel and _traceFlags and where should these trace messages ( EtwTrace.Trace ) go? The code I'm looking at is of .net framework 2.0 @Edit: I guess I should start with ETW Tracing MSDN entry.

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  • Which itch does a gravatar scratch?

    - by WizardOfOdds
    This is a very serious question: I've seen lots of threads here about gravatars but I couldn't find and answer to this question: what computer identification/authentication (?) problem, if any, are gravatars supposed to solve? Neither the Wikipedia entry nor the official website are very useful. The official website mentions a "globally unique" picture. Unique in what sense? As far as I can see it's only the hash that is unique: two persons can have two pictures looking very similar if not identical. Note that this question is not about which problems do gravatars unarguably cause (like leaking 10% of the stackoverflow.com accounts email addresses like discussed here : "gravatars can leak email adresses" ) but about which authentication (?) problems, if any, are gravatars supposed to solve? Is the goal just to have a cool/funny/cute icon and save bandwith by having it stored on a remote website or is there more to it, like serving a real authentication purpose which I'd be completely missing? Note that I've got nothing against them and find them rather cool, but I'm just having a hard time figuring out what their purpose is and if I should care or not about them in the webapps I'm developping.

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  • How to pass a Context when using acts_as_taggable_on for assigning tags

    - by kbjerring
    I am using acts_as_taggable_on for assigning 'fixed' categories as well as free' tags to a Company model. My question is how I can pass the correct tag Context for the two different kinds of tags in the form view. For instance, I would like the user to click all the "sector" categories that apply to a company, and then be freely allowed to add additional tags. At this point, the only way I have gotten this to work is through the company model (inspired by this question): # models/company.rb class Company ... acts_as_taggable_on :sectors, :tags has_many :sector_tags, :through => :taggings, :source => :tag, has_many :taggings, :as => :taggable, :include => :tag, :class_name => "ActsAsTaggableOn::Tagging", :conditions => { :taggable_type => "Company", :context => "sectors" } ... end in the form (using the simple_form gem) I have... # views/companies/_form.html.haml = simple_form_for @company do |f| = f.input :name = f.association :sector_tags, :as => :check_boxes, :hint => "Please click all that apply" = f.input :tag_list But this obviously causes the two tag types ("sectors" and "tags") to be of the same "sectors" context which is not what I want. Can anyone hint at how I can pass the relevant Context ("sectors") in the form where the user assigns the sector tags? Or maybe I can pass it in the "has_many :sector_tags ..." line in the Company model? A related question is if this is a good way to do it at all? Would I be better off just using a Category model for assigning sector tags through a joint model? Thanks!

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  • Delete array of size 1

    - by Arne
    This is possibly a candidate for a one-line answer. I would like know it anyway.. I am writing a simple circular buffer and for some reasons that are not important for the question I need to implement it using an array of doubles. In fact I have not investiated other ways to do it, but since an array is required anyway I have not spent much time on looking for alternatives. template<typename T> class CircularBuffer { public: CircularBuffer(unsigned int size); ~CircularBuffer(); void Resize(unsigned int new_size); ... private: T* buffer; unsigned int buffer_size; }; Since I need to have the buffer dynamically sized the buffer_size is neither const nor a template parameter. Now the question: During construction and in function Resize(int) I only require the size to be at least one, although a buffer of size one is effectively no longer a buffer. Of course using a simple double instead would be more appropriate but anyway. Now when deleting the internal buffer in the destructor - or in function resize for that matter - I need to delete the allocated memory. Question is, how? First candidate is of course delete[] buffer; but then again, if I have allocated a buffer of size one, that is if the pointer was aquired with buffer = new T[0], is it still appropriate to call delete[] on the pointer or do I need to call delete buffer; (without brackets) ? Thanks, Arne

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  • Cocoa NSStream TCP connection to FTP

    - by Chuck
    Hi, I'm new to Cocoa, but not to programming. Recently I decided I wanted to write a FTP client for Mac, and so I first made it in the language I'm most comfortable in (on Windows), and then moved on to Cocoa when I had the workings of FTP communications down. My question is (apparently) a bit controversial: How do I establish a read/writeable connection to (a ftp server)? What I have so far (non working obviously): NSInputStream *iStream; NSOutputStream *oStream; NSHost *host = [NSHost hostWithAddress:@"127.0.0.1"]; [NSStream getStreamsToHost:host port:3333 inputStream:&iStream outputStream:&oStream]; // ftp port: 3333 [iStream retain]; [oStream retain]; [iStream scheduleInRunLoop:[NSRunLoop currentRunLoop] forMode:NSDefaultRunLoopMode]; [oStream scheduleInRunLoop:[NSRunLoop currentRunLoop] forMode:NSDefaultRunLoopMode]; [iStream setDelegate:self]; [oStream setDelegate:self]; // which is not implemented apparently [iStream open]; [oStream open]; // .... [iStream write: (const uint8_t *)buf maxLength:8]; Which is partially based on http://developer.apple.com/mac/library/documentation/cocoa/Conceptual/Streams/Articles/NetworkStreams.html Now, why have I chosen NSStream? Because while this question is merely about how to connect to a FTP stream, my whole project will also include SSL and as far as I've been able to search here and on google, NSStream is capable of "switching" to a SSL connection. I've not been able to see the connection being made (which I'm usually able to do), but I also heard something about having to write to the stream before the stream will open? Any pointers are greatly appreciated, and sorry if my question is annoying - I'm new to Cocoa :)

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  • Add KO "data-bind" attribute on $(document).ready

    - by M.Babcock
    Preface I've rarely ever been a JS developer and this is my first attempt at doing something with Knockout.js. The question to follow likely illustrates both points. Backgound I have a fairly complex MVC3 application that I'm trying to get to work with KO (v2.0.0.0). My MVC app is designed to generically control which fields appear in the view (and how they are added to the view). It makes use of partial views to decide what to draw in the view based on the user's permissions (If the user is in group A then show control A, if the user in group B then show control B or possibly if the user is in group A don't include the control at all). Also, my model is very flat so I'm not sure the built-in ability to apply my ViewModel to a specific portion of the view will help. My solution to this problem is to provide an action in my controller that responds with an object in JSON format with that contains the JQuery selector and the content to assign to the "data-bind" attribute and bind the ViewModel to the View in the $(document).ready event using the values provided. Failed Proof-of-concept My first attempt at proving that this works doesn't actually seem to work, and by "doesn't work" I mean it just doesn't bind the values at all (as can be seen in this jsfiddle). I've tried it with the applyBindings inside of the ready event and not, but it doesn't seem to make any bit of difference. Question What am I doing wrong? Or is this just not something that can work with KO (though I've seen at least one example online doing the same thing and it supposedly works)? Like I said in the preface, I've only ever pretended to be a JS developer (though I've generally gotten it to work in the past) so I'm at a loss where to start trying to figure out what I'm doing wrong. Hopefully this isn't a real noob question.

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  • Mark duplicates in MySql with php (without deleting)

    - by Adam
    So, I'm having some problems with a MySQL query (see other question), and decided to try a different approach. I have a database table with some duplicate rows, which I actually might need for future reference, so I don't want to remove. What I'm looking for is a way to display the data without those duplicates, but without removing them. I can't use a simple select query (as described in the other question). So what I need to do is write a code that does the following: 1. Go through my db Table. 2. Spot duplicates in the "ip" column. 3. Mark the first instance of each duplicate with "0" (in a column named "duplicate") and the rest with "1". This way I can later SELECT only the rows WHERE duplicate=0. NOTE: If your solution is related to the SELECT query, please read this other question first - there's a reason I'm not just using GROUP BY / DISTINCT. Thanks in advance.

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  • HTTP requests and Apache modules: Creative attack vectors

    - by pinkgothic
    Slightly unorthodox question here: I'm currently trying to break an Apache with a handful of custom modules. What spawned the testing is that Apache internally forwards requests that it considers too large (e.g. 1 MB trash) to modules hooked in appropriately, forcing them to deal with the garbage data - and lack of handling in the custom modules caused Apache in its entirety to go up in flames. Ouch, ouch, ouch. That particular issue was fortunately fixed, but the question's arisen whether or not there may be other similar vulnerabilities. Right now I have a tool at my disposal that lets me send a raw HTTP request to the server (or rather, raw data through an established TCP connection that could be interpreted as an HTTP request if it followed the form of one, e.g. "GET ...") and I'm trying to come up with other ideas. (TCP-level attacks like Slowloris and Nkiller2 are not my focus at the moment.) Does anyone have a few nice ideas how to confuse the server and/or its modules to the point of self-immolation? Broken UTF-8? (Though I doubt Apache cares about encoding - I imagine it just juggles raw bytes.) Stuff that is only barely too long, followed by a 0-byte, followed by junk? et cetera I don't consider myself a very good tester (I'm doing this by necessity and lack of manpower; I unfortunately don't even have a more than basic grasp of Apache internals that would help me along), which is why I'm hoping for an insightful response or two or three. Maybe some of you have done some similar testing for your own projects? (If stackoverflow is not the right place for this question, I apologise. Not sure where else to put it.)

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  • What are basic programs like, recursion, Fibonacci, small trick programs?

    - by Mike
    This question may seem daft (I'm a new to 'programming' and should probably stop if this is the type of question I'm required to ask)... What are: "basic programs like, recursion, fibonacci, factorial, string manipulation, small trick programs"? I've recently read Coding Horror - the non programmer and followed the links to Kegel and How to get hired. Then I delved through some similar questions here (hence the block quote) and I realised that as a fully fledged non-programmer I probably wouldn't know if I knew recursion (or any of the others) because I wouldn't know what it looked like, or why it was used, and what the results would look like after it was used. I suppose I'm trying to get a picture of "the basics". What the principles are and why we learn them - where they'll be used and what result/s your looking for. If they'll be used as an interview question during my first interview sometime in 2020 I would like to look less ignorant than those 199 out of 200 who just don't know the how, or the why, of programming. As always...I'll get my coat. Thanks Mike

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  • IIS 7.5 refuses to load 64-bit assembly - possible CAS problem?

    - by Rune
    Hi, I just downloaded the Orchard CMS, opened it up in VS2008 and hit F5: Everything runs fine. I then created a website in IIS 7.5 and pointed it to the web project's directory and set up permissions correctly (I hope). I downloaded the 64-bit version System.Data.SQLite as suggested here: Orchard Work Item 14798 and here: SO: Could not load file or assembly 'System.Data.SQLite'. The site runs in Full Trust. When I point my browser to the site running through IIS I get Could not load file or assembly 'System.Data.SQLite, Version=1.0.65.0, Culture=neutral, PublicKeyToken=db937bc2d44ff139' or one of its dependencies. Failed to grant minimum permission requests. I don't know much about Code Access Security (if that is even what's at play here), so I am at a loss here. What am I doing wrong / not understanding / not seeing? How do I provide appropriate permissions and to whom / what? Is there any hope of ever deploying this application to a hoster where I am only allowed to run in Medium Trust? Any help, pointers or suggestions would be greatly appreciated. Thanks. NOTE: the question is not why this initially worked when run through Cassini. The answer to that question is contained in the answer to the SO question referenced above.

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  • Integrating a Custom Compiler with the Visual Studio IDE

    - by M.A. Hanin
    Background: I want to create a custom VB compiler, extending the "original" compiler, to handle my custom compile-time attributes. Question: after I've created my custom compiler and I've got an executable file capable of compiling VB code via the standard command-line interface, how do I integrate this compiler with the Visual Studio IDE? (such that pressing "compile" or "build" will make use of my compiler instead of the default compiler). EDIT: (Correct me if i'm wrong) From the reactions here, I see this question is a bit shocking, so I shall further explain my needs and background: .NET provides us with a great mechanism called Attributes. As far as I understand, making attributes apply their intended behavior upon the attributed element (assembly, module, class, method, etc.) - attributes must be reflected upon. So the real trick here is reflecting and applying behavior at the right spot. Lets take Serialization for example: We decorate a class with the Serializable attribute. We then pass an instance of the class to the formatter's Serialize method. The formatter reflects upon the instance, checking if it has the Serializable attribute, and acting accordingly. Now, if we examine the Synchronization, Flags, Obsolete and CLSCompliant attributes, then the real question is: who reflects upon them? At least in some cases, it has to be the compiler (and/or IDE). Therefore, it seems that if I wish to create custom attributes that change an element's behavior regardless of any specific consumer, i must extend the compiler to reflect upon them at compilation. Of course, these are not my personal insights: the book "Applied .NET Attributes" provides a complete example of creating a custom attribute and a custom C# compiler to reflect upon that attribute at compilation (the example is used to implement "java-style checked exceptions").

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  • How to upgrade all dependencies to a specific version

    - by Calm Storm
    Hi, I tried doing a mvn dependency:tree and I get a tree of dependencies. My question is, My project depends on many modules which internally depends on many spring artifacts. There are a few version clashes. I want to upgrade all spring related libraries to say the latest one (2.6.x or above). What is the preferred way to do this? Should I declare all the deps spring-context, spring-support (and 10 other artifacts) in my pom.xml and point them to 2.6.x ? Is there any other better method ? [INFO] +- com.xxxx:yyy-jar:jar:1.0-SNAPSHOT:compile [INFO] | +- com.xxxx:zzz-commons:jar:1.0-SNAPSHOT:compile [INFO] | | +- org.springframework:spring-dao:jar:2.0.7:compile [INFO] | | +- org.springframework:spring-jdbc:jar:2.0.7:compile [INFO] | | +- org.springframework:spring-web:jar:2.0.7:compile [INFO] | | +- org.springframework:spring-support:jar:2.0.7:compile [INFO] | | +- net.sf.ehcache:ehcache:jar:1.2:compile [INFO] | | +- commons-collections:commons-collections:jar:3.2:compile [INFO] | | +- aspectj:aspectjweaver:jar:1.5.3:compile [INFO] | | +- betex-commons:betex-commons:jar:5.5.1-2:compile [INFO] | | \- javax.servlet:servlet-api:jar:2.4:compile [INFO] | +- org.springframework:spring-beans:jar:2.0.7:compile [INFO] | +- org.springframework:spring-jmx:jar:2.0.7:compile [INFO] | +- org.springframework:spring-remoting:jar:2.0.7:compile [INFO] | +- org.apache.cxf:cxf-rt-core:jar:2.0.2-incubator:compile [INFO] | | +- org.apache.cxf:cxf-api:jar:2.0.2-incubator:compile [INFO] | | | +- org.apache.geronimo.specs:geronimo-activation_1.1_spec:jar:1.0-M1:compile [INFO] | | | +- org.codehaus.woodstox:wstx-asl:jar:3.2.1:compile [INFO] | | | +- org.apache.neethi:neethi:jar:2.0.2:compile [INFO] | | | \- org.apache.cxf:cxf-common-schemas:jar:2.0.2-incubator:compile UPDATE : I have removed the extra question about "\-" so my question is now what the subject asks for :)

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  • Regex to check if exact string exists including #

    - by Jayrox
    New question As suggested by Asaph in previous question: Regex to check if exact string exists I am looking for a way to check if an exact string match exists in another string using Regex or any better method suggested. I understand that you tell regex to match a space or any other non-word character at the beginning or end of a string. However, I don't know exactly how to set it up. Search String: #t String 1: Hello World, Nice to see you! #t String 2: Hello World, Nice to see you! String 3: #T Hello World, Nice to see you! I would like to use the search string and compare it to String 1, String 2 and String 3 and only get a positive match from String 1 and String 3 but not from String 2. Requirements: Search String may be at any character position in the Subject. There may or may not be a white-space character before or after it. I do not want it to match if it is part of another string; such as part of a word. For the sake of this question: I think I would do this using this pattern: /\b\#t\b/gi However, this is not returning the results as I would have expected. I am able to find the exact matches for normal strings (strings where # isn't present) using: /\b{$search_string}\b/gi Additional info: this will be used in PHP 5

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  • Java: How do you really force a GC using JVMTI's ForceGargabeCollection?

    - by WizardOfOdds
    I'm not looking for the usual "you can only hint the GC in Java using System.gc()" answers, this is not at all what this question is about. My questions is not subjective and is based on a reality: GC can be forced in Java for a fact. A lot of programs that we use daily do it: IntelliJ IDEA, NetBeans, VisualVM. They all can force GC to happen. How is it done? I take it they're all using JVMTI and more specifically the ForceGarbabeCollection (notice the "Force") but how can I try it for myself? http://java.sun.com/javase/6/docs/platform/jvmti/jvmti.html#ForceGarbageCollection Also note that this question is not about "why" I'd want to do this: the "why" may be "curiosity" or "we're writing a program similar to VisualVM", etc. The question is really "how do you force a GC using JVMTI's ForceGarbageCollection"? Does the JVM needs to be launched with any special parameters? Is any JNI required? If so, what code exactly? Does it only work on Sun VMs? Any complete and compilable example would be most welcome.

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