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  • What is the canonical approach to using a VCS right from a project's infancy?

    - by Anonymous -
    Background I've used VCS (mainly git) in the past to manage many existing projects and it works great. Typically with an existing project, I would check in each change I make to the code that either optimizes or changes the overall functionality (you know what I mean, in suitable steps, not every single line I change). Problem One thing I've not had so much practise at is creating new projects. I'm in the process of starting a new project of my own that will probably grow quite large, but I'm finding that there is a lot to do and a lot changing in the first few days/hours/weeks/the period up until the product is actually functioning in it's most basic form. Is there any point in me checking in each step of the process as I would with an existing project? I'm not breaking the project with changes I make since it isn't working yet. At the moment I've simply been using VCS as a backup at the end of each day, when I leave the computer. My first few commits were things like "Basic directory structure in place" and "DB tables created". How should I use a VCS when starting a new project?

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  • Ad-hoc reporting similar to Microstrategy/Pentaho - is OLAP really the only choice (is OLAP even sufficient)?

    - by TheBeefMightBeTough
    So I'm getting ready to develop an API in Java that will provide all dimensions, metrics, hierarchies, etc to a user such that they can pick and choose what they want (say, e.g., dimensions of Location (a store) and Weekly, and the metric Product Sales $), provide their choices to the api, and have it spit out an object that contains the answer to their question (the object would probably be a set of cells). I don't even believe there will be much drill up/down. The data warehouse the APIwill interface with is in a standard form (FACT tables, dimensions, star schema format). My question is, is an OLAP framework such as Mondrian the only way to achieve something akin to ad-hoc reporting? I can envisage a really large Cube (or VirtualCube) that contains most of the dimensions and metrics the user could ever want, which would give the illusion of ad-hoc reporting. The problem is that there is a ton of setup to do (so much XML) to get the framework to work with the data. Further it requires specific knowledge, such as MDX, and even moreso learning the framework peculiars (Mondrian API). Finally, I am not positive it will scale much better than simply making queries against a SQL database. OLAP to me feels like very old technology. Is performance really an issue anymore? The alternative I can think of would be dynamic SQL. If the existing tables in the data warehouse conform to a naming scheme (FACT_, DIM_, etc), or if a very simple config file/ database table containing config information existed that stored which tables are fact tables, which are dimensions, and what metrics are available, then couldn't the api read from that and assembly the appropriate sql query? Would this necessarily be harder than learning MDX, Mondrian (or another OLAP framework), and creating all the cubes? In general, I feel that OLAP is at the same time too powerful (supports drill up/down, complex functions) and outdated and am reluctant to base my architecture on it. However, I am unsure if the alternative(s), such as rolling my own ad-hoc reporting framework using dynamic SQL would remove any complexity while still fulfilling requirements, both functional and non-functional (e.g., scalability; some FACT tables have many millions of rows). I also wonder about other techniques (e.g., hive). Has anyone here tried to do ad-hoc reporting? Any advice? I expect this project to take a pretty long time (3 months min, but probably longer), so I just do not want to commit to an architecture without being absolutely sure of its pros and cons. Thanks so much.

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  • How to restore my D Drive

    - by buggi
    I need help in recovering one of my drives from my windows7 machine. I used to have two drives, c and d. I used D to save all my data. i have been using my laptop from 3years. and when I saw it today, i cant find D drive on my computer :( . When I opened the parititioning wizard it showed me that the space I allocated for D is there but as unallocated space. I badly need the data from D. Can you please suggest if I can use ubuntu to recover D? Thanks in advance.

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  • Branching strategy for parallel development that won't be in the same release?

    - by Telastyn
    My team is working on a product, which for business reasons needs to be released on a regular schedule. An issue has arisen where we want to do development in parallel for the upcoming release, as well as the 'next' release. This is to become standard practice, so it's not as straightforward as cutting a feature branch for the new work. We'll continually have 2+ teams working on different releases of the same product. Is there an SCM best practice for this sort of arrangement?

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  • PHP - Data Access Layer

    - by scarpacci
    I am currently reviewing a code base and noticed that a majority of the calls (along with DB connections) are just buried inside the PHP scripts. I would have assumed that like other languages they would have developed some sort of data access layer (Like I would do in .Net or Java) for all of the communication to the DB (or implemented MVC, etc). Is this still a common pattern in PHP or is there alternative methodologies/patterns for this technology? I am just trying to understand why the subs would have developed it this way. Any insight/info on how experienced developers design an approach data access in PHP would be very much appreciated.

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  • Can I associate a github gist with an organization?

    - by yc01
    My team has a GitHub organization account. A lot of the work I do results in one-off scripts that we want to be able to have on our organization page, but that aren't big enough projects to justify their own repository. Is there any way to associates Gists with GitHub organization accounts? If not, what's the best way to 'check-in' or associate smaller scripts into Github's shared organizational repository?

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  • Organizing your Data Access Layer

    - by nighthawk457
    I am using Entity Framework as my ORM in an ASP.Net application. I have my database already created so ended up generating the entity model from it. What is a good way to organize files/classes in the data access layer. My entity framework model is in a class library and I was planning on adding additional classes per Entity(i.e per database table) and putting all the queries related to those tables in their respective classes. I am not sure if this is a right approach and if it is then where do the queries requiring data from multiple tables go? Am I completely wrong in organizing my files based on entities/tables and should I organize them based on functional areas instead.

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  • Is this bad practice?

    - by gekod
    I just wanted to ask for your opinion on a situation that occurs sometimes and which I don't know what would be the most elegant way to solve it. Here it goes: We have module A which reads an entry from a database and sends a request to module B containing ONLY the information from the entry module B would need to accomplish it's job (to keep modularity I just give it the information it needs - module B has nothing to do with the rest of the information from the read DB entry). Now after finishing it's job, module B has to reply to a module C if it succeeded or failed. To do this module B replies with the information it has gotten from module A and some variable meaning success or fail. Now here comes the problem: module C needs to find that entry again BUT the information it has gotten from module B is not enough to uniquely find the exact same entry again. I don't think that module A giving more information to module B which it doesn't need to do it's job but which it could then give back to module C would be a good practice because this would mean giving some module information it doesn't really need. What do you think?

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  • Converting obj data to CSS3D

    - by Don Boots
    I found a ton of formulae and what not, but 3D isn't my forte so I'm at a loss of what specifically to use. My goal is to convert the data in an 3D .obj file (vertices, normals, faces) to CSS3D (width, height, rotateX,Y,Z and/or similar transforms). For example 2 simple planes g plane1 # simple along along Z axis v 0.0 0.0 0.0 v 0.0 0.0 1.0 v 0.0 1.0 1.0 v 0.0 1.0 0.0 g plane2 # plane rotated 90 degrees along Y-axis v 0.0 0.0 0.0 v 0.0 1.0 0.0 v 1.0 1.0 0.0 v 1.0 0.0 0.0 f 1 2 3 4 f 5 6 7 8 Could this data be converted to: #plane1 { width: X; height: Y; transform: rotateX(Xdeg) rotateY(Ydeg) rotateZ(Zdeg) translateZ(Zpx) } #plane2 { width: X; height: Y; transform: rotateX(Xdeg) rotateY(Ydeg) rotateZ(Zdeg) translateZ(Zpx) } /* Or something equivalent such as transform: matrix3d() */ In summary, while this may be too HTML/CSS-y for game development, the core question is how to get the X/Y/Z-rotation of a 4 point plane from it's matrix of x,y,z coordinates?

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  • Looking for best approach to create new projects for enviroment specifics files

    - by Ness
    ClearCase Question... Overview of requirements: There are 3 diff environments (DEV, TEST and PROD) which have a folder called 'common' that users across all envs. There are multiple servers in those 3 envs and we want to store their server environment specific configuration files in Clearcase. The executables files are different for each environment. Thus there will not be cross delivery require between dev/test/prod. Any thoughts on how we can approach this? Is keeping it simplest is the best approach here? One component to one vobs as (DEV_Serv1, TEST_Serv1, PROD_Serv1, Dev_Serv2, Test_Serv2 and etc)? OR Have multiple components VOB? One other thing is developers here like to use snapshots views.

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  • How do I recover my accidentally lost Windows partitions after installing Ubuntu?

    - by Totally newbie
    I have a Toshiba satellite A-200 laptop with a Vista OS on it with 4 NTFS partitions (C:) Vista (D:) Entertainment (E:) Work (F:) Sources and I wanted to start using Ubuntu instead. So I tried it first from the live CD and everything was OK and all the partitions were shown and working and so I decided to install Ubuntu to replace Vista on the (C:) drive. After I did that I can no longer find my folders and files on the (D:), (E:), (F:) partitions and the only file system that is shown is one 198 GB although my HDD is 320 GB. I can't access the lost data on the remaining 120 GB which I hope is still there and not totally lost I am now working from the live CD but I am unable to install testdisk. Can I recover the Vista partitions by the product recovery CD to get my laptop back to the factory settings? Can I recover the NTFS partitions using a recovery program for Windows or will that make the problem worse? I need these data badly as I don't have a backup for them.

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  • Which VCS is efficient for storing small changes to big text files?

    - by MiguelM
    A government agency publishes a text file with thousands of records. The entire file is about 60MB. Every day the file has about 60 new or changed records. We need to validate some info against that file, and for auditing purposes, we may need to recover the file as it was in certain date. I thought I could use a VCS to store the file using git, but I understand git stores the entire text file gzipped, so the 60BM file will still need about 30MB to store everyday version. I wonder if one of the free VCS stores only diff/patch files.

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  • Database Context and Singleton injection with IoC

    - by zaitsman
    All of the below relates to a ASP.NET c# app. I have a Singleton Settings MemoryCache that reads values from database on first access and caches these, then invalidates them using SQL Service Broker message and re-reads as required. For the purposes of standard controllers, i create my Db Context in a request scope. However, this obviously means that i can't use the same context in the Settings Cache class, since that is a singleton and we have a scope collision. At the moment, i ended up with two db contexts - the Controllers get it via IoC container, whereas a Singleton just creates it's own. However, i am not satisfied with this approach (mostly due to the way i feel about two contexts, the cache doesn't set anything on the db hence concurrency is not an issue as much). What is a better way to do it?

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  • design for interruptable operations

    - by tpaksu
    I couldn't find a better topic but here it is; 1) When user clicks a button, code starts t work, 2) When another button is clicked, it would stop doing whatever it does and start to run the second button's code, 3) Or with not user interaction, an electrical power down detected from a connected device, so our software would cancel the current event and start doing the power down procedure. How is this design mostly applied to code? I mean "stop what you are doing" part? If you would say events, event handlers etc. how do you bind a condition to the event? and how do you tell the program without using laddered if's to end it's process? method1(); if (powerdown) return; method2(); if (powerdown) return; etc.

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  • Ubuntu crashed during the update to 12.04, not I can't recover my files, help please

    - by mrah
    I'm pretty new to Linux and I've only installed Ubuntu as I couldn't afford to buy Windows, worked well and I liked it. But I chose to upgrade it to the newest version after a prompt. The update froze and the machine was unresponsive which forced me to hard reboot it. Now nothing seems to load and I've reached my wits end (mainly cos I'm lost in all the command lines). I've decided to try and recover my data from the hard drive, only two folders, by selecting the try Ubuntu option when I insert the OS CD into the machine. The problem I'm experiencing now is it won't let me copy my folders, I get a 'The folder contents could not be displayed. You do not have the permissions necessary to view the contents of "folder_name".' Does anyone know how I can recover this data?

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  • android application that visualize real time data

    - by matarsak
    I want to build and android app that visualize real time data , I set up a UDP channel that get the data , now I want to visualize it . I now that I can use openGL ES. but I have now back ground and in a few weeks I dont think that i'm able to learn that . what about android processing ? could it be used for extensive visualization task like this? or it's limited ? I heard it's not hard to learn that. any other option ?

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