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  • asp.net free webcontrol to display matrix reports with column and row grouping, subtotals and totals

    - by dev-cu
    Hello, I want to develop some kind of reports in Asp.net with x-axis and y-axis being dynamics, allowing grouping by row and column, for example: have products in y-axis and date in x-axis having in body number of sells of a given product in a given date, if date in x-axis are years, i want subtotals for each month for a product (row) and subtotals of sells of all products in date (column) I know there are products available to build reports, but i am using Mysql, so Reporting Service is not an option. It's not necessary for the client build additional reports, i think the simplest solution is having a control to display such information and not using crystal report (which is not free) or something more complex, i want to know if is there an available free control to reach my goal. Well, does anybody know a control or have a different idea, thanks in advance.

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  • C Programming: calling free() on error?

    - by kouei
    Hi all, This a follow up on my previous question. link here. My question is: Let's say I have the following code.. char* buf = (char*) malloc(1024); ... for(; i<20; i++) { if(read(fd, buf, 1024) == -1) { // read off a file and store in buffer perror("read failed"); return 1; } ... } free(buf); what i'm trying to get at is that - what if an error occurs at read()? does that mean my allocated memory never gets freed? If that's the case, how do I handle this? Should I be calling free() as part of error handling? Once again, I apologize for the bad English. ^^; Many thanks, K.

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  • Deleting Part of An Array in Java to Free Memory on Heap

    - by kate
    I am implementing a dynamic programming algorithm for the knapsack problem in Java. I declare the array and then initialize its size to be [number of objects][capacity of knapsack]. When my number of objects or my capacity gets too large, I get a memory error because I run out of space on the heap. My questions is: If I delete rows from my double array as I go along, will Java free the memory as I delete? Or does Java reserve that memory space for the size of the array I originally created? If it's the latter, is there a way to manually free the memory in Java? Thanks for your Help!

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  • Difficulty understanding behavior of free()

    - by Rasmi Ranjan Nayak
    int main() { int *ptr, **ptr1; ptr = (int*)malloc(sizeof(int)); ptr1 = (int**)malloc(sizeof(int)); free(ptr); *ptr = 12345; ptr1 = &ptr; //free(ptr); //**ptr1 = 23456; printf("%d \n", **ptr1); system("pause"); return 0; } How does *ptr store the value 12345, when the memory has already been freed? So, now ptr should be pointing to garbage. Why is this happening?

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  • Such thing as a free lunch

    - by red@work
    There is a lot of hard work goes on in Red Gate, no doubt. And then there are things we're asked to get involved with, that aren't hard and don't feel much like work. What? Give up our free lunch at Red Gate for. a free lunch in a pub? Within an hour, myself and a colleague are at the Railway Vue pub in nearby Impington. This is all part of Red Gate's aim to hire more Software Engineers and Test Engineers, to help Red Gate grow into one of the greatest software companies in the world (it's already the best small software development company in the UK). Phase one then - buy lunch for Cambridge. Seriously, not just the targeted engineers, but for anyone who could print the voucher and make it to the nearest of the venues, two of which happen to be pubs. We're here to watch people happily eat a free pub lunch at Red Gate's expense. We also get involved and I swear I didn't order a beer with the food but the landlord says I clearly did and I'm not one to argue. Red Gate are offering a free iPad to anyone that comes to interview for a Software Engineer or Test Engineer role. We speak to a few engineers who are genuinely interested. We speak to a couple of DBA's too, and encourage them to make speculative applications - no free iPad on offer for them, but that's not really the point. The point is, everyone should apply to work here! It's that good. We overhear someone ask if 'these vouchers really work?' They do. There's no catch. The free IPad? Again, no catch. If that's what it takes to get talented engineers through our doors for an interview, then that's all good. Once they see where we work and how we work, we think they'll want to come and work with us. The following day, Red Gate decides to repeat the offer, and that means more hard work, this time at The Castle pub. Another landlord that mishears 'mineral water' and serves me a beer. There are many more people clutching the printed vouchers and they all seem very happy to be getting a free lunch from Red Gate. "Come and work for us" we suggest, "lunch is always free!" So if you're a talented engineer, like free lunches and want a free iPad, you know what to do.

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  • A completely free and open programming language

    - by XGouchet
    With Oracle vs Google trial, it seems that Java is not entirely Open and free (as free software) as I expected. Although there exists completely free/open JVM, it's hard to know what is a copyright infringement with Java, and what is not. So I'd like to know if there is a completely Open and free language with open and free IDE (Eclipse-like) out there, Object Oriented if possible, and able to make window-based applications for the main OSs (Linux, Mac, Windows).

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  • Double Free inside of a destructor upon adding to a vector

    - by Shawn B
    Hey, I am working on a drum machine, and am having problems with vectors. Each Sequence has a list of samples, and the samples are ordered in a vector. However, when a sample is push_back on the vector, the sample's destructor is called, and results in a double free error. Here is the Sample creation code: class XSample { public: Uint8 Repeat; Uint8 PlayCount; Uint16 Beats; Uint16 *Beat; Uint16 BeatsPerMinute; XSample(Uint16 NewBeats,Uint16 NewBPM,Uint8 NewRepeat); ~XSample(); void GenerateSample(); void PlaySample(); }; XSample::XSample(Uint16 NewBeats,Uint16 NewBPM,Uint8 NewRepeat) { Beats = NewBeats; BeatsPerMinute = NewBPM; Repeat = NewRepeat-1; PlayCount = 0; printf("XSample Construction\n"); Beat = new Uint16[Beats]; } XSample::~XSample() { printf("XSample Destruction\n"); delete [] Beat; } And the 'Dynamo' code that creates each sample in the vector: class XDynamo { public: std::vector<XSample> Samples; void CreateSample(Uint16 NewBeats,Uint16 NewBPM,Uint8 NewRepeat); }; void XDynamo::CreateSample(Uint16 NewBeats,Uint16 NewBPM,Uint8 NewRepeat) { Samples.push_back(XSample(NewBeats,NewBPM,NewRepeat)); } Here is main(): int main() { XDynamo Dynamo; Dynamo.CreateSample(4,120,2); Dynamo.CreateSample(8,240,1); return 0; } And this is what happens when the program is run: Starting program: /home/shawn/dynamo2/dynamo [Thread debugging using libthread_db enabled] XSample Construction XSample Destruction XSample Construction XSample Destruction *** glibc detected *** /home/shawn/dynamo2/dynamo: double free or corruption (fasttop): 0x0804d008 *** However, when the delete [] is removed from the destructor, the program runs perfectly. What is causing this? Any help is greatly appreciated.

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  • lock screen before hibernating [12.04]

    - by Emanuel Ey
    So when i hibernate my laptop the screen doesn't lock automatically. To solve this if changed /etc/acpi/powerbtn.sh to contain: su - myUsername -c "gnome-screensaver-command -l" sudo pm-hibernate exit 0 When running this file from a command line it works as intended (ie, lock the screen and then hibernate). Unfortunately, when pressing the power button, it still just hibernates without locking the screen -what am I missing? EDIT: I've added the line whoami>>~/Desktop/test.txt to verify which user is executing the /etc/acpi/powerbtn.shscript. When pressing the power button, the file test.txt is created, but is empty. From this i conclude that the script is in fact being called when pressing the power button. What i do not understand is how the output of whoami can be empty...

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  • Free Web UI design software

    - by Pich
    Does anybody know of any free Web UI design software? EDIT: I am looking for a UI mockup tool (that is freeware) to create stuff like this: http://blogs.atlassian.com/jira/Mockups%20UI.jpg I works a developer with the task to design the UI of an application. I want to draw some examples of how the webpages can look and show it to the requirements team.

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  • Free SCM for Matlab 64 bit version on Windows

    - by Asaf R
    When Matlab is installed in its 64 bit version, it can use only 64 bit source control systems. Is there a source control system that's free, works with 64 bit Matlab and runs on Windows? It can be a system that supports only one developer. It can be 32 bit itself, if it'll work. It will be installed on the same machine as the Matlab in use, which is a Win7 Ultimate x64 machine.

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  • Free Application Lifecycle Management Tools for .NET Development

    - by pablocastilla
    I would like to achieve the following: I want a free Application Lifecycle Management (ALM) environment surrounding vs2008 sp1. (My company is short of cash). I want all the stuff: CI, BugTracking, task panel, Wiki, Source control... all integrating themselves. If I could have some kind of scrum managing tools it would be better. Any recommendation? Thanks in advance.

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  • Free desktop client for Oracle?

    - by pugmarx
    Which is the best Open Source free client for querying an Oracle database? It may additionally support other databases (MySQL, Postgres etc), since our development environment often requires switching between different databases.

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  • Free Modem Dialer

    - by andySF
    Hello, Is there a telephone application for modems that can receive a phone number as a parameter and manage the call for themselves? I ask because in my application I must implement a click2call functionality and may be is a free software out there that I can use and I do not have to fight with TAPI. Thanks!

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  • Native.* assemblyIdentity with Registration-free com

    - by moogs
    I set Isolated=true to some COM library that I need to use registration free. Visual studio now created Native.* manifest files for each of my assemblies: Why "Native"? Can I change this? Can someone point me to info I can read? (googling native / assembly / manifest is yield a lot of non-related info ) Is there a way I can embed these manifest files into the assembly DLL? Thanks!

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  • Generating n statements from context-free grammars

    - by Dervin Thunk
    Hello, So not to reinvent the wheel, I would like to know what has already been done about generating random statements from a context-free language (like those produced by yacc, etc.). These grammars are primarily for parsing, but maybe someone has done some generation for testing the parsers? Thanks

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  • Free SVN Hosting Server Without Project

    - by Nathan Campos
    Hello, I want to know if exist some free SVN hosting server that you don't need to have a project to host your C++ files, because i don't have a project and i want to store my C++ in an SVN server, but like here in OpenSVN you can upload your C++ files, but you need to have a project, i want a server that you can upload your files using SVN to an account not a project, like this: http://www.test-svn.com/~nathanpc/ and here is your files. Thanks!

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  • Problem with Free SMTP Server in php code

    - by Nuha
    I wrote php code for use to contact us form but I can not find free SMTP server to use it. I Try to use SMTP Server For Gmail but I found this error. Warning: mail() [function.mail]: "sendmail_from" not set in php.ini or custom "From:" header missing in C:\www\htdocs\contactUs.php on line 25" line 25 is : mail ($to,$subject,$body,$headers); statement that indicate using Gmail SMTP Server is : ini_set("SMTP","smtp.gmail.com"); SO,can U help me ?:(

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  • Free SVN repo server without requiring a project

    - by Nathan Campos
    I want to know if there are any free Subversion repository hosting servers where you don't need to have a 'project' to host your C++ files in. I don't have a actual project, but I want to store my C++ in an SVN repository. I am looking for something like OpenSVN where you can upload your C++ files, but it requires you to have a project. Can you recommend a Subversion hosting service where you can upload your files to an account, rather than a project. Something like: http://www.test-svn.com/~nathanpc/

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