Search Results

Search found 94227 results on 3770 pages for 'common code'.

Page 1073/3770 | < Previous Page | 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080  | Next Page >

  • Part 4: Development Standards or How to share

    - by volker.eckardt(at)oracle.com
    Although we usually introduce the custom development part in EBS projects as “a small piece only” and “we will avoid as best as possible”, the development effort can be enormous and should therefore be well addressed by project standards. Any additional solution or additional software tool or product shall influence the custom development rules (by adding, removing or replacing sections). It is very common in EBS projects to create a so called “MD.030 Development Standards” document and put everything what’s related to development conventions into it. This document gets approval and will be shared among all developers. Later, additional sections have to be added, and usually the development lead is responsible for doing this. However, sometimes used development techniques are not documented properly, and therefore the development solutions deviate from each other, or from the initially agreed standards. My advice would be the following: keep the MD.030 as a base document, and add a Wiki on top. The “Development Wiki” covers the following: Collect input from every developer without updating the MD.030 directly Collect additional topics that might need further specification Allow a discussion about such topics by reviewing/updating the wiki directly Add also decisions or open questions right into it. In one of my own projects we were using this “Developer Wiki” quite extensive, and my experience is very positive. We had different sections in it, good cross references, but also additional material like code templates, links to external web pages etc. By using this wiki, the development standards became “owned” by the right group of people, the developers. They recognized that information sharing can improve the overall development quality, but will also reduce the workload on individuals. Finally, the wiki was much more accurate and helpful for the daily development work than our initial MD.030, and we all decided to retire the document completely. Summary: Information sharing in the development area is very important! The usual “MD.030 Development Standards“ is a good starting point, but should be combined with a “Development Wiki”, allowing everyone to address and discuss necessary improvements. A well-structured Wiki can replace the document in some sections completely. Side Note: The corresponding task in Oracle OUM (Oracle Unified Method) is DS.050 ‘Determine Design and Build Standards’ Volker

    Read the article

  • Why is CS never a topic of conversation of the layman? [closed]

    - by hydroparadise
    Granted, every profession has it's technicalities. If you are an MD, you better know the anatomy of the human body, and if you are astronomer, you better know your calculus. Yet, you don't have to know these more advance topics to know that smoking might give you lung cancer because of carcinogens or the moon revolves around the earth because of gravity (thank you Discovery Channel). There's sort of a common knowledge (at least in more developed countries) of these more advanced topics. With that said, why are things like recursive descent parsing, BNF, or Turing machines hardly ever mentioned outsided 3000 or 4000 level classes in a university setting or between colleagues? Even back in my days before college in my pursuit of knowledge on how computers work, these very important topics (IMHO) never seem to get the light of day. Many different sources and sites go into "What is a processor?" or "What is RAM?", or "What is an OS?". You might get lucky and discover something about programming languages and how they play a role in how applications are created, but nothing about the tools for creating the language itself. To extend this idea, Dennis Ritchie died shortly after Steve Jobs, yet Dennis Ritchie got very little press compared to Steve Jobs. So, the heart of my question: Does the public in general not care to hear about computer science topics that make the technology in their lives work, or does the computer science community not lend itself to the general public to close the knowledge gap? Am I wrong to think the general public has the same thirst for knowledge on how things work as I do? Please consider the question carefully before answering or vote closing please.

    Read the article

  • A few questions about how JavaScript works

    - by KayoticSully
    I originally posted on Stack Overflow and was told I might get some better answers here. I have been looking deeply into JavaScript lately to fully understand the language and have a few nagging questions that I can not seem to find answers to (Specifically dealing with Object Oriented programming. I know JavaScript is meant to be used in an OOP manner I just want to understand it for the sake of completeness). Assuming the following code: function TestObject() { this.fA = function() { // do stuff } this.fB = testB; function testB() { // do stuff } } TestObject.prototype = { fC : function { // do stuff } } What is the difference between functions fA and fB? Do they behave exactly the same in scope and potential ability? Is it just convention or is one way technically better or proper? If there is only ever going to be one instance of an object at any given time, would adding a function to the prototype such as fC even be worthwhile? Is there any benefit to doing so? Is the prototype only really useful when dealing with many instances of an object or inheritance? And what is technically the "proper" way to add methods to the prototype the way I have above or calling TestObject.prototype.functionName = function(){} every time? I am looking to keep my JavaScript code as clean and readable as possible but am also very interested in what the proper conventions for Objects are in the language. I come from a Java and PHP background and am trying to not make any assumptions about how JavaScript works since I know it is very different being prototype based. Also are there any definitive JavaScript style guides or documentation about how JavaScript operates at a low level? Thanks!

    Read the article

  • Skip CodedUI Tests, use Selenium for Web Automation

    - by Aligned
    Originally posted on: http://geekswithblogs.net/Aligned/archive/2013/10/31/skip-codedui-tests-use-selenium-for-web-automation.aspxI recently joined a team that was using Agile Methodologies to create a new product. They have a working beta product after 10 or so 2 week sprints and already had UI’s that had changed several times as they went through iterations of their UI. As a result, the QA team was falling behind with automated tests and I was tasked to help them catch up and expand their tests. The project is a website. I heard many complaints about how hard it is to work with CodedUI (writing our own code, not relying on the recorder as we wanted re-usable and more maintainable code) then it took me 4+ hours to fix one issue. It was hard to traverse the key and debugging the objects with breakpoints… I said out loud “there has to be a better way or a framework the uses jQuery to run through the tests.” Plus it seemed really slow (wait… finding the object … wait… start putting in text…). Plus some tests would randomly fail on the test agents (using the test settings and an automated build, they are run on VMs using Microsoft test agents). Enough complaining. Selenium to the rescue (mostly). The lead QA guy decided to try it out and we haven’t turned back. We are now running tests in Chrome and Firefox and they run a lot faster. We had IE running to, but some of the tests were running fine locally, but hanging on the test agents. I’ll add some hints and lessons learned in a later post.

    Read the article

  • Rules Manager and Expression Filter getting removed

    - by Mike Dietrich
    I doubt that many people are using the Oracle features "Rules Manager" and "Expression Filter" as usually people handle these things (such as ensuring that a zip code or a car number plate has a certain format) within the application code and not inside the database. Oracle Beehive for instance uses that just on the side.  Anyway, just learned today that Rules Manager and Expression Filter components will get removed once our next database release most likely called Oracle Database 12c will get released. So before upgrading to Oracle Database 12c you can remove EXF and RUL components (SELECT COMP_ID FROM DBA_REGISTRY WHERE COMP_ID IN ('EXF','RUL'); ). You'd simply do that by executing the following script before upgrade:SQL> @?/rdbms/admin/catnoexf.sqlThis will clean up Rules Manager and Expression Filter components inside the database. You could run ?/rdbms/admin/catnorul.sql before but I believe catnoexf.sql will clean up everything already. And you'll find all this information plus guidelines for migration of existing content in MOS Note: 1233535.1 - Obsolescence Notice: Rules Manager and Expression Filter Features of Oracle Database -M.

    Read the article

  • SQL to XML open data made simple

    - by drrwebber
    The perennial question for people is how to easily generate XML from SQL table content?  The latest CAM Editor release really tackles this head on by providing a powerful and simple toolset.  Firstly you can visually browse your SQL tables and then drag and drop from columns and tables into the XML structure editor.   This gives you a code-free method of describing the transformation you require.  So you do not need to know about the vagaries of XML and XSD schema syntax. Second you can map directly into existing industry domain XML exchange structures in the XML visual editor, again no need to wrestle with XSD schema, you have WYSIWYG visual control over what your output will look like. If you do not have a target XML structure and need to build one from scratch, then the CAM Editor makes this simple.  Switch the SQL viewer into designer mode, then take your existing SQL table and drag and drop it into the XML structure editor.  Automatically the XML wizard tool will take your SQL column names and definitions and create equivalent XML for you and insert the mappings. Simply save the structure template, and run the Open Data generator menu option, and your XML is built for you. Completely code-free template driven development. To see this in action, see our video demonstration links and then download the tools and samples and try it yourself.

    Read the article

  • How do I use an API?

    - by GRardB
    Background I have no idea how to use an API. I know that all APIs are different, but I've been doing research and I don't fully understand the documentation that comes along with them. There's a programming competition at my university in a month and a half that I want to compete in (revolved around APIs) but nobody on my team has ever used one. We're computer science majors, so we have experience programming, but we've just never been exposed to an API. I tried looking at Twitter's documentation, but I'm lost. Would anyone be able to give me some tips on how to get started? Maybe a very easy API with examples, or explaining essential things about common elements of different APIs? I don't need a full-blown tutorial on Stack Overflow; I just need to be pointed in the right direction. Update The programming languages that I'm most fluent in are C (simple text editor usually) and Java (Eclipse). In an attempt to be more specific with my question: I understand that APIs (and yes, external libraries are what I was referring to) are simply sets of functions. Question I guess what I'm trying to ask is how I would go about accessing those functions. Do I need to download specific files and include them in my programs, or do they need to be accessed remotely, etc.?

    Read the article

  • I seem to be missing a few important concepts with PhoneGap

    - by garethdn
    I'm planning on developing an app on multiple platforms and I'm thinking that PhoneGap might be perfect for me. I had been reading that it's one codebase for all platforms but looking at the PhoneGap guide it seems there are separate instructions for each platform. So if i want to develop for iOS, Android, BB and WP7 I need to write 4 different sets of code? I'm sure i'm missing something fundamental here. Aside from that, how do people usually approach a PhoneGap build? You obviously / probably want the finished app to look like a native app - is it more common than not to use jQuery Mobile together with PhoneGap? Is there a preferred IDE? I see, in the guide, for iOS they seem to suggest Xcode. I'm fine using Xcode but it seems a bit overkill for HTML & CSS. Do I need to develop in Xcode and if not how do i approach it? Use a different IDE / Text Editor and then copy paste into Xcode for building and testing? I know this question is long-winded and fundamental but it something which i don't think is properly addressed in the guides. Thanks.

    Read the article

  • Time Zone on WebLogic Server

    - by adejuanc
    In order to configure the time zone with WebLogic Server, use the following JVM startup command: -Duser.timezone=<timezone> For example, in the java arguments in the admin console at Environments -> Servers -> Servername -> - Server Start tab, configure the startup settings that Node Manager will use to start the particular server. For example: -Duser.timezone='America/Arizona' There are many different time zones, each with its own code. For a complete list please refer to : http://en.wikipedia.org/wiki/List_of_zoneinfo_time_zones For testing, you can run the following code on WLS with a JSP, servlet, or deploying the class: import java.util.Calendar; import java.util.TimeZone; public class TestTimeZone {  public static void main(String[] args) {    Calendar calendar = Calendar.getInstance();    TimeZone timeZone = calendar.getTimeZone();    System.out.println(" your Current TimeZone is : " + timeZone.getDisplayName());    System.out.println(" Time Zone id : "+ timeZone.getID());  } }

    Read the article

  • Where I'll Be At JavaOne 2012

    - by Geertjan
    Fun and games for me at JavaOne 2012. Below are the sessions/BOFs/tutorials I'll be attending. The items in red are the sessions and BOFs where I'll be speaking, either as the main/only speaker or as a supporting speaker in someone else's presentation, while the other items (except for the NetBeans booth duties and mini presentations, which are included below) are items I'm interested in and so will be sitting in the audience: Sunday: NetBeans Day Monday: 10:00 - 12:00 TUT4801: Make Your Clients Richer: JavaFX and the NetBeans Platform 12:20 - 12:30 Mini Presentation in OTN Lounge: What's New in NetBeans IDE? 13:00 - 14:00 CON7050: How My Life Would Have Been So Much Better If We Had Used the NetBeans Platform 14:30 - 14:40 Mini Presentation in OTN Lounge: NetBeans and Java EE 15:00 - 16:00 CON4038: Project EASEL: Developing and Managing HTML5 in a Java World 16:30 - 17:15 BOF6151: NetBeans.Next: The Roadmap Ahead 17:30 - 18:15 BOF3332: Lessons Learned in Writing a PDF-to-JavaFX Converter for NetBeans 18:30 - 19:15 BOF4920: Runtime Class Reloading for Dummies Tuesday: 9:30 - 11:30 NetBeans Booth 11:30 - 12:30 CON6139: Lessons Learned in Building Enterprise and Desktop Applications with the NetBeans IDE 13:00 - 14:00 CON4387: Bringing Mylyn to NetBeans and OSGi, Bridging Their Worlds 14:30 - 14:40 Mini Presentation in OTN Lounge: NetBeans Java Editor 15:30 - 17:30 NetBeans Booth 17:30 - 18:15 BOF3665: Custom Static Code Analysis 18:30 - 19:15 BOF5806: Doing JSF Development in the NetBeans IDE  Wednesday: 8:30 - 9:30 CON5132: NetBeans Plug-in Development: JRebel Experience Report 10:00 - 11:00 CON2987: Unlocking the Java EE 6 Platform 11:30 - 12:30 CON10140: Delivering Bug-Free, More Efficient Code for the Java Platform 13:00 - 14:00 CON3826: Patterns for Modularity: What Modules Don’t Want You to Know 14:30 - 14:40 Mini Presentation in OTN Lounge: NetBeans Platform 15:00 - 16:00 CON3160: Dynamic Class Reloading in the Wild with Javeleon Thursday: 12:30 - 13:30 CON4952: NetBeans Platform Panel Discussion 14:00 - 15:00 CON11879: Getting Started with the NetBeans Platform There are several sessions/BOFs I would have liked to be able to attend, but because of clashes with other sessions that I need to see slightly more urgently, I won't be able to attend those, unfortunately. Will be a busy but interesting time, as always! The entire list of NetBeans-oriented sessions can be found here: http://netbeans.org/community/articles/javaone/2012/index.html

    Read the article

  • Any mobile-friendly Credit Card billing solutions for mobile sites similar to Bango?

    - by Programmer
    Are there any mobile-friendly Credit Card billing solutions for mobile sites similar to Bango? The advantages of Bango I have seen compared to regular Credit Card solutions that make it considerably "mobile-friendly" are: 1) It does not require the user to enter their full name and billing address to make a payment. The user is only required to enter their Credit Card number, expiration date, and CVC code (if they are in the U.S., they will also have to enter their Zip Code). That is significantly less input than is normally required for Credit Card payments, which is a big plus on small mobile key pads. After a user makes an initial Credit Card payment, their details are stored by Bango, and the next time the user needs to make a payment with the same Credit Card, they just have to click a single link and it processes the payment on their stored Credit Card. Needless to say, this is very convenient for mobile users as it is analogous to Direct Carrier Billing as far as the user is concerned since they won't need to input any details. The downside with Bango is that their fees are higher than others, all payments must be processed via their site and branding, there is a high minimum ($1.99) and a low maximum ($30) on how much you can charge users, and you need to pay a monthly fee on top of the high transaction costs. It is due to the downsides mentioned above that I am looking for an alternative solution that also does the advantages 1) and 2) above. Is there anything like that? I looked at JunglePay and they do neither 1) nor 2).

    Read the article

  • Does IE have more strict Javascript parsing than Chrome?

    - by Clay Shannon
    This is not meant to start a religio-technical browser war - I still prefer Chrome, at least for now, but: Because of a perhaps Chrome-related problem with my web page (see https://code.google.com/p/chromium/issues/detail?can=2&start=0&num=100&q=&colspec=ID%20Pri%20M%20Iteration%20ReleaseBlock%20Cr%20Status%20Owner%20Summary%20OS%20Modified&groupby=&sort=&id=161473), I temporarily switched to IE (10) to see if it would also view the time value as invalid. However, I didn't even get to that point - IE stopped me in my tracks before I could get there; but I found that IE was right - it is more particular/precise in validating my code. For example, I got this from IE: SCRIPT5007: The value of the property '$' is null or undefined, not a Function object ...which was referring to this: <script src="/CommonLogin/Scripts/jquery-1.9.1.min.js" type="text/javascript"></script> <script type="text/javascript"> // body sometimes becomes white???? with jquery 1.6.1 $("body").css("background-color", "#405DA7"); < This line is highlighted as the culprit: $("body").css("background-color", "#405DA7"); jQuery is referenced right above it - so why did it consider "$" to be undefined, especially when Chrome had no problem with it...ah! I looked at that location (/CommonLogin/Scripts/) and saw that, sure enough, the version of jQuery there was actually jquery-1.6.2.min.js. I added the updated jQuery file (1.9.1) and it got past this. So now the question is: why does Chrome ignore this? Does it download the referenced version from its own CDN if it can't find it in the place you specify? IE did flag other errs after that, too; so I'm thinking perhaps IE is better at catching lurking problems than, at least, Chrome is. Haven't tested Firefox diesbzg yet.

    Read the article

  • How can my team avoid frequent errors after refactoring?

    - by SDD64
    to give you a little background: I work for a company with roughly twelve Ruby on Rails developers (+/- interns). Remote work is common. Our product is made out of two parts: a rather fat core, and thin up to big customer projects built upon it. Customer projects usually expand the core. Overwriting of key features does not happen. I might add that the core has some rather bad parts that are in urgent need of refactorings. There are specs, but mostly for the customer projects. The worst part of the core are untested (as it should be...). The developers are split into two teams, working with one or two PO for each sprint. Usually, one customer project is strictly associated with one of the teams and POs. Now our problem: Rather frequently, we break each others stuff. Some one from Team A expands or refactors the core feature Y, causing unexpected errors for one of Team B's customer projects. Mostly, the changes are not announced over the teams, so the bugs hit almost always unexpected. Team B, including the PO, thought about feature Y to be stable and did not test it before releasing, unaware of the changes. How to get rid of those problems? What kind of 'announcement technique' can you recommend me?

    Read the article

  • "TDD is about design, not verification"; concretely, what does that mean?

    - by sigo
    I've been wondering about this. What do we exactly mean by design and verification. Should I just apply TDD to make sure my code is SOLID and not check if it's external behaviour is correct? Should I use BDD for verifying the behaviour is correct? Where I get confused also is regarding TDD code Katas, to me they looked like more about verification than design; shouldn't they be called BDD Katas instead of TDD Katas? I reckon that for example the Uncle Bob bowling Kata leads in the end to a simple and nice internal design but I felt that most of the process was centred more around verification than design. Design seemed to be a side effect of testing the external behaviour incrementally. I didn't feel so much that we were focusing most of our efforts on design but more on verification. While normally we are told the contrary, that in TDD, verification is a side effect, design is the main purpose. So my question is what should I focus on exactly, when I do TDD: SOLID, external API usability, or something else? And how can I do that without being focused on verification? What do you guys focus your energy on when you are practising TDD?

    Read the article

  • XNA Windows Phone 7 Sprite movement

    - by Darren Gaughan
    I'm working on a Windows phone game and I'm having difficulty with the sprite movement. What I want to do is make the sprite gradually move to the position that is touched on screen, when there is only one quick touch and release. At the minute all I can do is either make the sprite jump instantly to the touch location or move along to the touch location when the touch is held down. Code for jumping to touch location: TouchCollection touchCollection = TouchPanel.GetState(); foreach (TouchLocation tl in touchCollection) { if ((tl.State == TouchLocationState.Pressed) || (tl.State == TouchLocationState.Moved)) { Vector2 newPos = new Vector2(tl.Position.X,tl.Position.Y); if (position != newPos) { while (position.X < newPos.X) { position.X += (float)theGameTime.ElapsedGameTime.Milliseconds / 10.0f * spriteDirectionRight; } } } } Code to gradually move along while touch is held: TouchCollection touchCollection = TouchPanel.GetState(); foreach (TouchLocation tl in touchCollection) { if ((tl.State == TouchLocationState.Pressed) || (tl.State == TouchLocationState.Moved)) { Vector2 newPos = new Vector2(tl.Position.X,tl.Position.Y); if (position != newPos) { position.X += (float)theGameTime.ElapsedGameTime.Milliseconds / 10.0f * spriteDirectionRight; } } } These are in the Update() method of the Sprite class.

    Read the article

  • How do I stop video tearing? (Nvidia prop driver, non-compositing window manager)

    - by Chan-Ho Suh
    I have that problem which seemingly afflicts many using the proprietary Nvidia driver: Video tearing: fine horizontal lines (usually near the top of my display) when there is a lot of panning or action in the video. (Note: switching back to the default nouveau driver is not an option, as its seemingly nonexistent power-management drains my battery several times faster) I've tried Totem, Parole, and VLC, and tearing occurs with all of them. The best result has been to use X11 output in VLC, but there is still tearing with relatively moderate action. Hardware: MacBook Air 3,2 -- which has an Nvidia GeForce 320M. There are two common fixes for tearing with Nvidia prop drivers: Turn off compositing, since Nvidia proprietary drivers don't usually play nice with compositing window managers on Linux (Compiz is an exception I'm aware of). But I use an extremely lightweight window manager (Awesome window manager) which is not even capable of compositing (or any cool effects). I also have this problem in Xfce, where I have compositing disabled. Enabling sync to VBlank. To enable this, I set the option in nvidia-settings and then autostart it as nvidia-settings -l with my other autostart programs. This seems to work, because when I run glxgears, I get: $ glxgears Running synchronized to the vertical refresh. The framerate should be approximately the same as the monitor refresh rate. 303 frames in 5.0 seconds = 60.500 FPS 300 frames in 5.0 seconds = 59.992 FPS And when I check the refresh rate using nvidia-settings: $ nvidia-settings -q RefreshRate Attribute 'RefreshRate' (wampum:0.0; display device: DFP-2): 60.00 Hz. All this suggests sync to VBlank is enabled. As I understand it, this is precisely designed to stop tearing, and a lot of people's problem is even getting something like glxgears to output the correct info. I don't understand why it's not working for me. xorg.conf: http://paste.ubuntu.com/992056/ Example of observed tearing::

    Read the article

  • How do I make apt-get instal commands not display every package that is installing?

    - by rajlego
    When I install something on terminal, it often shows me a few things for status. For one, it shows download rate (which is fine). However, when I install something, it can display Unpacking libgranite2:amd64 (0.3.0~r732+pkg64~ubuntu0.3.1) ... Selecting previously unselected package slingshot-launcher. Preparing to unpack .../slingshot-launcher_0.7.6.1+r421+pkg32~ubuntu0.3.1_amd64.deb ... Unpacking slingshot-launcher (0.7.6.1+r421+pkg32~ubuntu0.3.1) ... Selecting previously unselected package contractor. Preparing to unpack .../contractor_0.3.1~r136+pkg22~ubuntu0.3.1_amd64.deb ... Unpacking contractor (0.3.1~r136+pkg22~ubuntu0.3.1) ... Selecting previously unselected package apport-hooks-elementary. Preparing to unpack .../apport-hooks-elementary_0.1-0~35~saucy1_all.deb ... Unpacking apport-hooks-elementary (0.1-0~35~saucy1) ... Processing triggers for hicolor-icon-theme (0.13-1) ... Processing triggers for libglib2.0-0:amd64 (2.40.0-2) ... Processing triggers for man-db (2.6.7.1-1) ... Setting up libgranite-common (0.3.0~r732+pkg64~ubuntu0.3.1) ... Setting up libgranite2:amd64 (0.3.0~r732+pkg64~ubuntu0.3.1) ... Setting up slingshot-launcher (0.7.6.1+r421+pkg32~ubuntu0.3.1) ... Setting up contractor (0.3.1~r136+pkg22~ubuntu0.3.1) ... Setting up apport-hooks-elementary (0.1-0~35~saucy1) ... Processing triggers for libc-bin (2.19-0ubuntu6) .. I would rather that not show up. I only want to see download rate, not all that other stuff. How do I do this? EDIT: I would also like the jargon to be stored somwehre else if something goes wrong, or for the jargon to just be expanable on terminal.

    Read the article

  • SharePoint: UI for ordering list items

    - by svdoever
    SharePoint list items have in the the base Item template a field named Order. This field is not shown by default. SharePoint 2007, 2010 and 2013 have a possibility to specify the order in a UI, using the _layouts page: {SiteUrl}/_layouts/Reorder.aspx?List={ListId} In SharePoint 2010 and 2013 it is possible to add a custom action to a list. It is possible to add a custom action to order list items as follows (SharePoint 2010 description): Open SharePoint Designer 2010 Navigate to a list Select Custom Actions > List Item Menu Fill in the dialog box: Open List Settings > Advanced Settings > Content Types, and set Allow management of content types to No  On List Settings select Column Ordering This results in the following UI in the browser: Selecting the custom Order Items action (under List Tools > Items) results in: You can change your custom action in SharePoint designer. On the list screen in the bottom right corner you can find the custom action: We now need to modify the view to include the order by adding the Order field to the view, and sorting on the Order field. Problem is that the Order field is hidden. It is possible to modify the schema of the Order field to set the Hidden attribute to FALSE. If we don’t want to write code to do it and still get the required result it is also possible to modify the view through SharePoint Designer: Modify the code of the view: This results in: Note that if you change the view through the web UI these changes are partly lost. If this is a problem modify the Order field schema for the list.

    Read the article

  • Choosing an open source license such that maximum value is added to a startup

    - by echo-flow
    There are many companies that produce open source software products, and many business models that these companies can use. I'm particularly interested in companies like 280 North, the company behind Objective-J and Cappucino frameworks. My understanding of this organization's business model is that they: worked to develop a tool which added significant value to developers, released the tool under an open source license, built a community around the tool (which was helped by the project's open source licensing), created interesting demos illustrating the project's value All of these things added value to the project, and the company that owned it. Finally, 280 North was sold to Motorola. My question has to do with the role of software licensing in this particular business model. 280 North licensed their software projects under the LGPL, which gave them some proprietary control over how the project could be used. I believe that the LGPL is what's known as a "weak copyleft" license, meaning that the project can be linked to, without the linking code also being licensed under the LGPL; but software derived directly from the project would need to be licensed under the LGPL. For web-oriented libraries in particular, weak copyleft, or non-copyleft licensing seems to be quite common; I can't think of a single example of a popular or well-known web-oriented library that is licensed under the GPL (or AGPL). The question then, is, how much value would a weak copyleft license like the LGPL add to a software venture like 280 North, versus a non-copyleft license, such as the BSD license or the Apache Software License? I'd really appreciate any insight anyone can offer into this, but I'd be most interested in answers that can cite other companies as case studies or examples.

    Read the article

  • Cheap ways to do scaling ops in shader?

    - by Nick Wiggill
    I've got an extensive world terrain that uses vec3 for the vertex position attribute. That's good, because the terrain has endless gradations due to the use of floating point. But I'm thinking about how to reduce the amount of data uploaded to the GPU. For my terrain, which uses discrete / grid-based vertex positions in x and z, it's pretty clear that I can replace my vec3s (floats, really) with shorts, halving the per-vertex position attribute cost from 12 bytes each to 6 bytes. Considering I've got little enough other vertex data, and an enormous amount of terrain data to push into the world, it's a major gain. Currently in my code, one unit in GLSL shaders is equal to 1m in the world. I like that scale. If I move over to using shorts, though, I won't be able to use the same scale, as I would then have a very blocky world where every step in height is an entire metre. So I see these potential solutions to scale the positional data correctly once it arrives at the vertex shader stage: Use 10:1 scaling, i.e. 1 short unit = 1 decimetre in CPU-side code. Do a division by 10 in the vertex shader to scale incoming decimetre values back to metres. Arbirary (non-PoT) divisions tend to be slow, however. Use (some-power-of-two):1 scaling (eg. 8:1), which enables the use of a bitshift (eg. val >> 3) to do the division... not sure how performant this is in shaders, though. Not as intuitive to read values, but possibly quite a bit faster than div by a non-PoT value. Use a texture as lookup table. I've heard that this is really fast. Or whatever solutions others can offer to achieve the same results -- minimal vertex data with sensible scaling.

    Read the article

  • Drawing visible tiles - side scrolling

    - by Troubleshoot
    Currently I'm calling drawMap every time repaint is called. This is the code I've written for my drawMap method so far. public void drawMap(Graphics2D g2d) { float cameraX = Player.getX() - (Frame.CANVAS_WIDTH / 2); float cameraY = Player.getY() - (Frame.CANVAS_HEIGHT / 2); int tileX = (int) cameraX; int tileY = (int) cameraY; int xIndent = 0, yIndent = 0; int a = 0, b = 0; while (tileX % TILE_SIZE != 0) { tileX--; xIndent++; } while (tileY % TILE_SIZE != 0) { tileY--; yIndent++; } for (int y = tileY; y < tileY + Frame.CANVAS_HEIGHT; y += Map.TILE_SIZE) { for (int x = tileX; x < tileX + Frame.CANVAS_WIDTH; x += Map.TILE_SIZE) { if ((y / TILE_SIZE < 0 || x / TILE_SIZE < 0) || (y / TILE_SIZE > columnSize)) break; g2d.drawImage(map[y / TILE_SIZE][x / TILE_SIZE], a - xIndent, b - yIndent, null); a += TILE_SIZE; } a = 0; b += TILE_SIZE; } } The idea behind this is that it gets the camera position and draws the map relative to the player position. However, instead of the player being in the center of the screen all the time, the player actually moves away from the center as it scrolls to the right, and moves towards to center as it scrolls to the left. I've been trying to pinpoint what I've done wrong but I can't seem to find it. My code also seems quite messy, so am I doing this the correct way?

    Read the article

  • Matrices: Arrays or separate member variables?

    - by bjz
    I'm teaching myself 3D maths and in the process building my own rudimentary engine (of sorts). I was wondering what would be the best way to structure my matrix class. There are a few options: Separate member variables: struct Mat4 { float m11, m12, m13, m14, m21, m22, m23, m24, m31, m32, m33, m34, m41, m42, m43, m44; // methods } A multi-dimensional array: struct Mat4 { float[4][4] m; // methods } An array of vectors struct Mat4 { Vec4[4] m; // methods } I'm guessing there would be positives and negatives to each. From 3D Math Primer for Graphics and Game Development, 2nd Edition p.155: Matrices use 1-based indices, so the first row and column are numbered 1. For example, a12 (read “a one two,” not “a twelve”) is the element in the first row, second column. Notice that this is different from programming languages such as C++ and Java, which use 0-based array indices. A matrix does not have a column 0 or row 0. This difference in indexing can cause some confusion if matrices are stored using an actual array data type. For this reason, it’s common for classes that store small, fixed size matrices of the type used for geometric purposes to give each element its own named member variable, such as float a11, instead of using the language’s native array support with something like float elem[3][3]. So that's one vote for method one. Is this really the accepted way to do things? It seems rather unwieldy if the only benefit would be sticking with the conventional math notation.

    Read the article

  • Should I avoid or embrace asking questions of other developers on the job?

    - by T.K.
    As a CS undergraduate, the people around me are either learning or are paid to teach me, but as a software developer, the people around me have tasks of their own. They aren't paid to teach me, and conversely, I am paid to contribute. When I first started working as a software developer co-op, I was introduced to a huge code base written in a language I had never used before. I had plenty of questions, but didn't want to bother my co-workers with all of them - it wasted their time and hurt my pride. Instead, I spent a lot of time bouncing between IDE and browser, trying to make sense of what had already been written and differentiate between expected behavior and symptoms of bugs. I'd ask my co-workers when I felt that the root of my lack of understanding was an in-house concept that I wouldn't find on the internet, but aside from that, I tried to confine my questions to lunch hours. Naturally, there were occasions where I wasted time trying to understand something in code on the internet that had, at its heart, an in-house concept, but overall, I felt I was productive enough during my first semester, contributing about as much as one could expect and gaining a pretty decent understanding of large parts of the product. I was wondering what senior developers felt about that mindset. Should new developers ask more questions to get to speed faster, or should they do their own research for themselves? I see benefits to both mindsets, and anticipate a large variety of responses, but I figure new developers might appreciate your answers without thinking to ask this question.

    Read the article

  • String manipulation functions in SQL Server 2000 / 2005

    - by Vipin
    SQL Server provides a range of string manipulation functions. I was aware of most of those in back of the mind, but when I needed to use one, I had to dig it out either from SQL server help file or from google. So, I thought I will list some of the functions which performs some common operations in SQL server. Hope it will be helpful to you all. Len (' String_Expression' ) - returns the length of input String_Expression. Example - Select Len('Vipin') Output - 5 Left ( 'String_Expression', int_characters ) - returns int_characters characters from the left of the String_Expression.     Example - Select Left('Vipin',3), Right('Vipin',3) Output -  Vip,  Pin  LTrim ( 'String_Expression' ) - removes spaces from left of the input 'String_Expression'  RTrim ( 'String_Expression' ) - removes spaces from right of the input 'String_Expression' Note - To removes spaces from both ends of the string_expression use Ltrim and RTrim in conjunction Example - Select LTrim(' Vipin '), RTrim(' Vipin ') , LTrim ( RTrim(' Vipin ')) Output - 'Vipin ' , ' Vipin' , 'Vipin' (Single quote marks ' ' are not part of the SQL output, it's just been included to demonstrate the presence of space at the end of string.) Substring ( 'String_Expression' , int_start , int_length ) - this function returns the part of string_expression. Right ( 'String_Expression', int_characters ) - returns int_characters characters from the right of the String_Expression.

    Read the article

  • AI agents with FSM: a question regarding this

    - by Prog
    Finite State Machines implemented with the State design pattern are a common way to design AI agents. I am familiar with the State design pattern and know how to implement it. However I have a question regarding how this is used in games to design AI agents. Please consider a class Monster that represents an AI agent. Simplified it looks like this: class Monster{ State state; // other fields omitted public void update(){ // called every game-loop cycle state.execute(this); } public void setState(State state){ this.state = state; } // irrelevant stuff omitted } There are several State subclasses that implement execute() differently. So far classic State pattern. Here's my question: AI agents are subject to environmental effects and other objects communicating with them. For example an AI agent might tell another AI agent to attack (i.e. agent.attack()). Or a fireball might tell an AI agent to fall down. This means that the agent must have methods such as attack() and fallDown(), or commonly some message receiving mechanism to understand such messages. My question is divided to two parts: 1- Please say if this is correct: With an FSM, the current State of the agent should be the one taking care of such method calls - i.e. the agent delegates to the current state upon every event. Correct? Or wrong? 2- If correct, than how is this done? Are all states obligated by their superclass) to implement methods such as attack(), fallDown() etc., so the agent can always delegate to them on almost every event? Or is it done in some other way?

    Read the article

< Previous Page | 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080  | Next Page >