Search Results

Search found 11224 results on 449 pages for 'suggestions'.

Page 188/449 | < Previous Page | 184 185 186 187 188 189 190 191 192 193 194 195  | Next Page >

• Advice on selecting programming languages to concentrate on? (2nd year IT security student)

  - by Tyler J Fisher

  I'm in the process of considering which programming languages I should devote the majority of my coding studies to. I'm a 2nd year CS student, majoring in IT security. What I want to do/work with: Intelligence gathering Relational databases Virus design Snort network IPS Current coding experience (what I'm going to keep): Java - intermediate HTML5 - intermediate SQL (MySQL, Oracle 11g) - basic BASH - basic I'm going to need to learn (at least) one of the following languages in order to be successful in my field. Languages to add (at least 1): Ruby (+Metasploit) C++ (virus design, low-level driver interaction, computationally intensive applications) Python (import ALL the things) My dilemma: If I diversify too broadly, I won't be able to focus on, and improve in a specific niche. Does anyone have any advice as to how I should select a language? What I'm considering + why I'm leaning towards Ruby because of Metasploit support, despite lower efficiency when compared to Python. Any suggestions based on real-world experience? Should I focus on Ruby, Python, or C++? Both Ruby, and Python have been regarded as syntactically similar to Java which my degree is based around. I'm going to be studying C++ in two years as a component of my malicious code class. Thanks, Tyler

  Read the article

• How do I setup sendmail, postfix, or dovecot so that perl can send emails?

  - by M. Tibbits

  Direct Question: I want to enable Perl to send emails. What package(s) should I install to setup a simplistic email server: no need for incoming, only outgoing. I can forward through gmail's SMTP if that's best? Background: I am programmer with a nightly build script written in Perl. I would like to email myself the results of my nightly builds (especially if there's an error). I've read about the perl package Mail::Sendmail briefly, but if something else is more appropriate, please tell me!! I tried the simple aptget install sendmail, but that doesn't seem to work. I get the following errors: Server said: 421 4.3.0 collect: Cannot write ./dfp1PFXl7W020719 (bfcommit, uid=0, gid=120): No such file or directory message transmission error (421 4.3.0 collect: Cannot write ./dfp1PFXl7W020719 (bfcommit, uid=0, gid=120): No such file or directory ) Server said: 421 4.3.0 collect: Cannot write ./dfp1PFXl7W020719 (bfcommit, uid=0, gid=120): No such file or directory I've googled this problem a bit and tried a few things -- adding my username to /etc/mail/trusted-users and such, but to no avail. In other words, I would be most grateful if you could provide simple instructions for setting up an outgoing mail server. I really don't understand the specifics, but as I understand, I need to forward the mail through an existing SMTP server -- so I can use my gmail account if need be (that's where I want to send the logs anyway). Any suggestions would be most greatly appreciated.

  Read the article

• 2D Side Scrolling game and "walk over ground" collision detection

  - by Fire-Dragon-DoL

  The question is not hard, I'm writing a game engine for 2D side scrolling games, however I'm thinking to my 2D side scrolling game and I always come up with the problem of "how should I do collision with the ground". I think I couldn't handle the collision with ground (ground for me is "where the player walk", so something heavily used) in a per-pixel way, and I can't even do it with simple shape comparison (because the ground can be tilted), so what's the correct way? I'know what tiles are and i've read about it, but how much should be big each tile to not appear like a stairs?Are there any other approach? I watched this game and is very nice how he walks on ground: http://www.youtube.com/watch?v=DmSAQwbbig8&feature=player_embedded If there are "platforms" in mid air, how should I handle them?I can walk over them but I can't pass "inside". Imagine a platform in mid air, it allows you to walk over it but limit you because you can't jump in the area she fits Sorry for my english, it's not my native language and this topic has a lot of keywords I don't know so I have to use workarounds Thanks for any answer Additional informations and suggestions: I'm doing a game course in this period and I asked them how to do this, they suggested me this approach (a QuadTree): -All map is divided into "big nodes" -Each bigger node has sub nodes, to find where the player is -You can find player's node with a ray on player position -When you find the node where the player is, you can do collision check through all pixels (which can be 100-200px nothing more) Here is an example, however i didn't show very well the bigger nodes because i'm not very good with photoshop :P How is this approach?

  Read the article

• Planning for the Recovery

  - by john.orourke(at)oracle.com

  As we plan for 2011, there are many positive signs in the global economy, but also some lingering issues. Planning no longer is about extrapolating past performance and adjusting for growth. It is now about constantly testing the temperature of the water, formulating scenarios, assessing risk and assigning probabilities.  So how does one plan for recovery and improve forecast accuracy in such a volatile environment?  Here are some suggestions from a recent article I wrote, which was published in the December Financial Planning & Analysis (FP&A) newsletter from the AFP (Association of Financial Professionals): Increase the frequency of forecasting Get more line managers involved in the planning and forecasting process Re-consider what's being measured - i.e. key financial and operational metrics Incorporate risk and probability into forecasts Reduce reliance on spreadsheets - leverage packaged EPM applications To learn more about these best practices, check out the FP&A section of the AFP website and register to receive the FP&A newsletter.  AFP recently launched a new topic area focused on the FP&A function and items of interest to this group of finance professionals.  In addition to the FP&A quarterly newsletter, AFP will be publishing articles, running webinars and will have an FP&A track in their annual conference, which is in Boston next November.  Brian Kalish, AFP's Finance Lead, is hoping this initiative creates a valuable networking and information-sharing resource for FP&A professionals. Here's a link to the FP&A page on the AFP web site:  http://www.afponline.org/pub/res/topics/topics_fpa.html If you register on the site you can access and subscribe to the FP&A newsletter and other resources. Best of luck in your planning for 2011 and beyond!   

  Read the article

• Software Developer Interview Question - Fair or Unfair

  - by user607018

  I just phone interviewed with a company for a graduate software developer position and was asked the following questions. I should add that the company concerned are not a database vendor. How does a query optimiser work? If a database was performing badly how would you use the performance logs to find out the problem. I have asked whether they ask such questions of all candidate software developers (graduate or experienced) in a first phone interview. They replied that they like to test their candidates knowledge of database development. I want to write to the company to say that these questions are unreasonable to ask at a software developer interview and to request that my interview be done over. I would like to check the reasonableness of the following assumptions a) Those questions cannot be fairly classified as database development questions. b) I think the questions are appropriate for a DBA interview but wholly unreasonable for a software developer interview (experienced or not). c) The first question is only relevant to a database vendor. d) The second question is not fair because software developers typically don't deal with database performance logs as that is the job of the DBA. Perhaps some of you will be kind enough to comment on my assumptions or may have any other suggestions, before I write to the company.

  Read the article

• The Social Business Thought Leaders - Steve Denning

  - by kellsey.ruppel

  How is the average organization doing? Not very well according to a number of recent books and reports. A few indicators provide quite a gloomy picture: Return on assets and invested capitals dropped to 25% of its value in 1965 in the entire US market (see The Shift Index by John Hagel) Firms are dying faster and faster with the average lifespan of companies listed in the S&P 500 index gone from 67 years in the 1920s to 15 years today (see Creative Disruption by Richard Foster) Employee engagement ratio, a high level indicator of an organization’s health proved to affect performance outcomes, does not exceed on average 20%-30% (see Employee Engagement, Gallup or The Engagement Gap, Towers Perrin) In one of the most enjoyable keynotes of the Social Business Forum 2012, Steve Denning (Author of Radical Management and Independent Management Consultant) explained why this is happening and especially what leaders should do to reverse the worrying trends. In this Social Business Thought Leaders series, we asked Steve to collapse some key suggestions in a 2 minutes video that we strongly recommend. Steve discusses traditional management - that set of principles and practices born in the early 20th century and largely inspired by thinkers such as Frederick Taylor and Henry Ford - as the main responsible for the declining performance of modern organizations. While so many things have changed in the last 100 or so years, most companies are in fact still primarily focused on maximizing profits and efficiency, cutting costs, coordinating individuals top-down through command and control. The issue is, in a knowledge intensive, customer centred, turbulent market like the one we are experiencing, similar concepts are not just alienating employees' passion but also destroying the last source of competitive differentiation left: creativity and the innovative potential. According to Steve Denning, in a phase change from old industrial to a creative, collaborative, knowledge economy, the answer is hidden in a whole new business ecosystem that puts the individual (both the employee and the customer) at the center of the organization. He calls this new paradigm Radical Management and in the video interview he articulates the huge challenges and amazing rewards our enterprises are facing during this inevitable transition.

  Read the article

• Top 10 OTN Tech Articles for 2012

  - by Bob Rhubart

  It takes a special kind of IT pro to risk additional carpal tunnel damage to pound out a technical article after spending the day wrestling with a keyboard in dealing with other duties. That kind of dedication is noteworthy, even more so if people actually take the time to read the resulting article. So if you know any of the authors listed below, skip the handshake and give them a congratulatory slap on the back for all that time spent torturing their tendons. Their hard work has earned a place on this list of  the Top 10 most popular OTN articles published in 2012.  Getting Started with Java SE Embedded on the Raspberry Pi by Bill Courington and Gary Collins How Dell Migrated from SUSE Linux to Oracle Linux by Jon Senger, Aik Zu Shyong, and Suzanne Zorn Exploring Oracle SQL Developer by Przemyslaw Piotrowski Getting Started with Oracle Unbreakable Enterprise Kernel Release 2 by Lenz Grimmer How to Get Started (FAST!) with JavaFX 2 and Scene Builder by Mark Heckler How to Use Oracle VM VirtualBox Templates by Yuli Vasiliev How to Update Oracle Solaris 11 Systems From Oracle Support Repositories by Glynn Foster Tips for Hardening an Oracle Linux Server by Lenz Grimmer and James Morris How To Configure Browser-based SSO with Kerberos/SPNEGO and Oracle WebLogic Server by Abhijit Patil How to Create a Local Yum Repository for Oracle Linux by Jared Greenwald Of course, OTN has a great many articles covering a broad range of topics of interest to Java developers, DBAs, sysadmins, solution architects, and everybody else who works keeping the IT world running. You'll find them here. If you have suggestions for topics or technologies you'd like to see covered, please let us know. And if you have insight and expertise to share, why not write your own article? Click here to learn how to get published on OTN.

  Read the article

• How can i be sure that professional programming is not for me ?

  - by user17766

  Hello everybody I love programming, developing projects for hobby and learning new concepts. I am getting harder too much in current job Despite learnt many thing well. I can even hardly understand assigned tasks. I am asking why i am getting harder to myself. It may not my fault? Our architecture doesn't spend enough time to explain complicated sides of project for us or i am not enough smart one for understand fastly. Our architecture also doesn't know what kind of hell he is creating ? Seeing 3 level generic types and 4-5 level generic inheritance in domain model objects hell makes me think so really. It looks abusing concepts more than reduce complexity. Thinking that he hasn't experienced before such a big project while he is getting confused in problems of the project. May i am not in right company ? May i am not good programmer ? May i am really stupid ? Become good in programming concepts is not enough to deal big project's complications so someone should to tell me that i have to still effort too much even i am good programmer for adopting myself to any big project ? Also i had another bad experiences from previous job but my professional experiences is almost few months but i spend 2 years for learning and coding for fun and i really can say that i have well skills on OOP, Design Patterns, coding standards and deep knowledge in language currently used. Sometimes i am thinking to leave programming professionally and work in any lame job while doing programming just for hobby. Waiting suggestions and insights

  Read the article

• Welcome to JavaOne!

  - by marius.ciortea

  Welcome to this year's JavaOne conference! We are glad you dropped by. We want to keep you informed of all the happenings around JavaOne: all the events leading up to the conference and all the events during the conference week itself. We'll cover announcements, news, planning (but we won't make you go to any meetings), and snafus (nothing that makes us look too bad, of course). We'll even throw in a contest or two to make sure you are paying attention. We'll post a couple of times a week, and then more frequently as we get closer to September. There's a group of us, and we cover the Java beat, JUGs, Oracle Technology Network, Oracle Solaris, and lots more. What do you want to hear about? Let us know.A group of us from the office went to see the movie Iron Man 2 (it just debuted in the United States) last week and it reminded us of Java, the Java community, and JavaOne. In all three cases, from many disparate (and sometimes seemingly incompatible) parts and people, something comes together that works, is cool, and helps make a better world. Right now, there are hundreds of little islands of planning, all busy answering questions for JavaOne: What sessions get selected? What goes in the Mason street tent (until a few weeks ago, Will there be a tent on Mason street?), What do the JUGS need? Which Oracle ACEs will be there? Can we do a surf theme at the OTN party? And, somehow, like an Iron Man suit, they all come together and work to make a great event. At least, we hope it will be great. That's for you to decide. Please don't be shy--give us your comments and suggestions. We'll be listening.P.S. You can attend Stark Expo online at Oracle.com/ironman2, where you can train to become a "Master Cloud Operative." I got my MCO certification. I wish I had a card to put in my wallet.

  Read the article

• Keyboard / keymap problems with Xubuntu 12.04 + NX nomachine

  - by bajafresh4life

  I'm running NX client on my Macbook Pro to connect to a Xubuntu 12.04 desktop at work. I have configured NX client to start up a console upon connection. I am able to connect to my remote linux machine and I get a simple xterm console. However, when I run xfce4-session, half my keys no longer work. For example, when I launch a terminal, I typing a, s, or d works, but if type w, e, r, or t, the cursor just blinks. If I ctrl-C out of xfce4-session, all the keys work fine in my xterm console. If I run xev, this is the output for when I hit a key that works: KeyRelease event, serial 34, synthetic NO, window 0x2e00001, root 0x373, subw 0x0, time 170160781, (-45,-21), root:(824,429), state 0x4, keycode 16 (keysym 0x63, c), same_screen YES, XLookupString gives 1 bytes: (03) "" XFilterEvent returns: False KeyRelease event, serial 34, synthetic NO, window 0x2e00001, root 0x373, subw 0x0, time 170160781, (-45,-21), root:(824,429), state 0x4, keycode 67 (keysym 0xffe3, Control_L), same_screen YES, XKeysymToKeycode returns keycode: 63 XLookupString gives 0 bytes: XFilterEvent returns: False but when I hit a key that doesn't work: FocusOut event, serial 34, synthetic NO, window 0x2e00001, mode NotifyGrab, detail NotifyAncestor FocusIn event, serial 34, synthetic NO, window 0x2e00001, mode NotifyUngrab, detail NotifyAncestor KeymapNotify event, serial 34, synthetic NO, window 0x0, keys: 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Any ideas on what I can do to troubleshoot this issue? Googling around offered a few suggestions (like playing with xmodmap) but nothing seemed to work. Also, one thing worth mentioning is that I do not have any keyboard issues when remoting into a different Ubuntu 10 box via NX.

  Read the article

• Technology stack for CRUD apps [closed]

  - by Panoy

  In the past years, I have been using VB6 + MySQL when developing CRUD applications. Now I am currently learning how to develop web applications, as my plan is to go through the "browser/web app" path every time I build a CRUD app. I'm leaning on Ruby on Rails + MySQL/PostgreSQL/any NoSQL database now. I would like to know what other technology/tools stack to include in my architecture when developing these web apps? I'm asking your inputs with regards to the UI, database and reporting stack/toolset. Currently I have these in mind: UI = jQuery, jQueryUI (add your comments for other good UI stack) database = will be considering NoSQL or simply but RDBMS reporting tool = i'm clueless here Will it also make sense to use NoSQL database on these CRUD applications? I am assuming that the data would balloon later on. The desktop/native app route is an option only if there is a requirement, that in my limited experience, believes that a web app can't solve. Like for example those imaging apps/document forms and point-of-sale systems. I believe that web apps are gaining ground now and I find it most fun and intriguing to play and experiment with them. Please share your suggestions!

  Read the article

• ORAchk 2.2.5 – New Tool Features & New Health Checks for the Oracle Stack

  - by SamanthaF-Oracle

  ORAchk version 2.2.5 is now available for download, new features in 2.2.5: Running checks for multiple databases in parallel Ability to schedule multiple automated runs via ORAchk daemon New "scratch area" for ORAchk temporary files moved from /tmp to a configurable $HOME directory location System health score calculation now ignores skipped checks Checks the health of pluggable databases using OS authentication New report section to report top 10 time consuming checks to be used for optimizing runtime in the future More readable report output for clusterwide checks Includes over 50 new Health Checks for the Oracle Stack Provides a single dashboard to view collections across your entire enterprise using the Collection Manager, now pre-bundled Expands coverage of pre and post upgrade checks to include standalone databases, with new profile options to run only these checks Expands to additional product areas in E-Business Suite of Workflow & Oracle Purchasing and in Enterprise Manager Cloud Control ORAchk has replaced the popular RACcheck tool, extending the coverage based on prioritization of top issues reported by users, to proactively scan for known problems within the area of: Oracle Database Standalone Database Grid Infrastructure & RAC Maximum Availability Architecture (MAA) Validation Upgrade Readiness Validation Golden Gate Enterprise Manager Cloud Control Repository E-Business Suite Oracle Payables (R12 only) Oracle Workflow Oracle Purchasing (R12 only) Oracle Sun Systems Oracle Solaris ORAchk features: Proactively scans for the most impactful problems across the various layers of your stack Streamlines how to investigate and analyze which known issues present a risk to you Executes lightweight checks in your environment, providing immediate results with no configuration data sent to Oracle Local reporting capability showing specific problems and their resolutions Ability to configure email notifications when problems are detected Provides a single dashboard to view collections across your entire enterprise using the Collection Manager ORAchk will expand in the future with high impact checks in existing and additional product areas. If you have particular checks or product areas you would like to see covered, please post suggestions in the ORAchk subspace in My Oracle Support Community. For more details about ORAchk see Document 1268927.2

  Read the article

• I spoke at SQL Saturday #77 and all I got was this really awesome speaker's shirt!

  - by Most Valuable Yak (Rob Volk)

  Yeah, it was 2 weeks ago, but I'm finally blogging about something! I presented Revenge: The SQL! at SQL Saturday #77 in Pensacola on June 4.  The session abstract is here, and you can download the slides from that page too.  You can see how I look in the speaker's shirt here. Overall it went pretty well.  I discovered a new bit of evil just that morning and in a carefully considered, agonizing decision-making process that was full documented, tested, and approved…nah, I just went ahead and added it at the last minute.  Which worked out even better than (not) planned, since it screwed me up a bit and made my point perfectly.  I had a few fans in the audience, and one of them recorded it for blackmail material posterity. I'd like to thank Karla Landrum (blog | twitter) and all the volunteers for putting together such a great event, and for being kind enough to let me present. (Note to Karla: I'll get the next $100 to you as soon as I can.  Might need a few extra days on the next $100.) Thanks to Audrey (blog | twitter), Peg, and Dorothy for attending and keeping the heckling down.  Thanks also to Aaron (blog | twitter) for providing room and board and also not heckling.  Thanks to Julie (blog | twitter) for coming up with the title for the presentation.  (boo to Julie for getting sick and bailing out on us)  And thanks to all of them for listening to a preview and offering their suggestions and advice! Cross your fingers that I get accepted at SQL Saturday 81 in Birmingham, SQL Saturday 85 in Orlando, or SQL Saturday 89 in Atlanta, or just attend them anyway!

  Read the article

• SQLAuthority News – SQL Server Interview Questions And Answers Book Summary

  - by pinaldave

  Today we are using computers for various activities, motor vehicles for traveling to places, and mobile phones for conversation. How many of us can claim the invention of micro-processor, a basic wheel, or the telegraph? Similarly, this book was not written overnight. The journey of this book goes many years back with many individuals to be thanked for. To begin with, we want to thank all those interviewers who reject interviewees by saying they need to know ‘the key things’ regardless of having high grades in class. The whole concept of interview questions and answers revolves around knowing those ‘key things’. The core concept of this book will continue to evolve over time. I am sure many of you will come along with us on this journey and submit your suggestions to us to make this book a key reference for anybody who wants to start with SQL Server. Today we want to acknowledge the fact that you will help us keep this book alive forever with the latest updates. We want to thank everyone who participates in this journey with us. Though each of these chapters are geared towards convenience we highly recommend reading each of the sections irrespective of the roles you might be doing since each of the sections have some interesting trivia about working with SQL Server. In the industry the role of accidental DBA’s (especially with SQL Server) is very common. Hence if you have performed the role of DBA for a short stint and want to brush-up your fundamentals then the upcoming sections will be a great review. Table Of Contents Database Concepts With Sql Server Common Generic Questions & Answers Common Developer Questions Common Tricky Questions Miscellaneous Questions On Sql Server 2008 Dba Skills Related Questions Data Warehousing Interview Questions & Answers General Best Practices [Amazon] | [Flipkart] Reference: Pinal Dave (http://blog.SQLAuthority.com) Filed under: Best Practices, Database, Pinal Dave, PostADay, SQL, SQL Authority, SQL Interview Questions and Answers, SQL Query, SQL Server, SQL Tips and Tricks, SQLAuthority News, T SQL, Technology

  Read the article

• From .psd to working HTML and CSS - help me suck less

  - by kevinmajor1

  I am not much of a designer. My strength lies in coding. That said, I'm often forced into the role of "The Man," responsible for all aspects of site creation. So, that said I'm wondering if the pros can give me tips/solutions/links to tutorials to my main questions. Resolution. What should I aim for? What are the lower and upper edges I should be aware of? I know that systems like 960 Grid were popular recently. Is that the number I should still aim for? Slicing up a .psd - are there any tricks I should know? I've always found it difficult to get my slices pixel perfect. I'm also really slow at it. I must be looking at it wrong, or missing something fundamental. The same goes for text. Layouts are always filled with the classic "Lorem...", but I can never seem to get real content to fit quite as well on the screen. The advanced (to me, anyway) looking things, like a part of a logo/image overlaying what looks like a content area. How does one do that? How do layouts change/are informed by the decision to go fixed or liquid? Again, any tips/tricks/suggestions/tutorials you can share would be greatly appreciated.

  Read the article

• Tell me what&rsquo;s wrong! &ndash; An XNA sample demonstrating exception handling and reporting in

  - by George Clingerman

  I’ve always enjoyed using Nick Gravelyn’s exception handling in all of my games. You’re always going to encounter those unhandled exception that your players are going to ferret out and having a method to display them rather than just crashing to the dashboard is definitely more of an elegant solution. But the other day I got to thinking…what if we could do more? What if instead of just displaying the error, we could encourage the players to send us the error. So I started playing with that an expanding upon Nick’s sample code to see what I could come up with. I got close to what I envisioned, but unfortunately there were some limitations to just what the XNA API could do. In my head I was picturing the players hitting “Send Message” and a 360 message would just be sent to the XBLIG developer. Unfortunately, you can only send messages in an XNA game to someone you’re currently in a network session with. Since I didn’t want to have a 360 server running all the time, virally connecting to players just to get error messages, I did the next best thing and just open up a 360 message and encourage them to manually enter the gamertag. Maybe someday we’ll be able to do that a little better, but this works for now. In the sample, players can hit the “A” button or key to generate in an exception. If the debugger is not attached, then the Exception message screen will be shown explaining what has happened and giving the player a chance to send a 360 message to the gamertag provided or maybe even just send an email. Nick’s code has been changed just a bit. It now accepts any PlayerIndex (no longer hard coded to just PlayerIndex.One) and it no longer uses a MessageBox to get the users selection. The code has also been modified so that it works both for the 360 and for the PC. Check out “Tell me what’s wrong!” and let me know if you have any thoughts or suggestions. I really do appreciate the feedback.

  Read the article

• How to Best Optimize up Model Transforms, Import 3DS Animations Into XNA 4.0?

  - by Jason R. Mick

  Relative beginner to XNA, but trying to build a multi-purpose (3D) game frameworking in XNA 4. Been using the Reed (O'Reilly) and Cawood/McGee (McGraw Hill) guides. My question is multi-faceted and involves how to most efficiently handle models. I'm using 3DS Max 2010 with kw-Xport to ship out my models as .X files. Solved an early problem by using my depth stencil state. My models are now loading properly (yay!) and I have basic bounding working, I just want to optimize transforming models and get animations working as a next step. My questions on models are: 1. Do you have any suggestions for good resources on exporting 3DS animations to XNA? I've seen some resources on how to handle animations in XNA, but most skimp on basic topics of how to convert multi-animation 3DS files. For example how do I take one big long string of keyframed animations (say running, frame 5-20, climbing frames 25-45, etc.) and turned them into named XNA animations. To my understanding every XNA animation has to have a name, but I haven't seen any tutorials on creating a new named animation from a subset of frames. 2. Is it faster to load a model once and animate/transform that base model on the fly @ draw time, or to load multiple models? My game will have multiple enemies, and I've already seen some lagginess in XNA, so II want to make my code efficient... 3. I've heard people on app hub talking about making custom content processors for models-- what is the benefit of this? Does it speed up transforming or animating the models? If so, can you point me towards any good (model-centric) tutorials? (I've built a custom height map content processor to generate terrain, following Cawood's examples, I'm just a bit confused as to how a model content processor would be implemented.)

  Read the article

• Should I swap from WCF to NserviceBus

  - by Matt Roberts

  We have a central server that sends and recieves messages from a number of PCs that are located on client networks in various locations. To facilitate this, currently I'm using WCF with TCPNetBindings, using duplex communication secured with certificates. Now, we have a number of issues with this - mainly that we are being asked to support "disconnected mode" (we need to be fault tolerant). From what I know, there is no simple way to do this using the WCF stack - we'd need to implement something and perhaps use msmq. I've been looking at NServiceBus lately, and from I can see it seems to fit the bill well - fault tolerance, messages can be sent over the internet via a simple http gateway, etc. I know it's well respected in the community, and I can see why from looking into it. So, my question is...Does employing NServiceBus sound like a sensible idea, or does anyone have any other suggestions / real world experience that relate to this? I guess I'm worried of introducing a new tech that I know relatively little about, and facing problems with things like securing it, setting everything up in a reliable way, gotchas along the way.. I'm also wary of "gold-plating" the architecture, and choosing something shiny that will end up bogging me down in implementation versus sticking with WCF and just making it work for me.. Thanks!

  Read the article

• Structuring database for multi-object "activity" and "following" functionalities

  - by romaninsh

  I am working on a web application which operate with different types of objects such as user, profiles, pages etc. All objects have unique object_id. When objects interact it may produce "activity", such as user posting on the page or profile. Activity may be related to multiple objects through their object_id. Users may also follow "objects" and they need to be able to see stream of relevant activity. Could you provide me with some data structure suggestions which would be efficient and scalable? My goal is to show activity limited to the objects which user is following I am not limited by relational databases. Update As I'm getting advices on ORM and how index things, I'd like to again, stress my question. According to my current design model the database structure looks like this: As you can see - it's quite easy to implement database like that. Activity and Follower tables do contain much larger amount of records than the upper level but it's tolerable. But when it comes for me to create a "timeline" table, it becomes a nightmare. For every user I need to reference all the object activities which he follows. In terms of records it easily gets out of control. Please suggest me how to change this structure to avoid timeline creation and also be abel to quickly retrieve activity for any given user. Thanks.

  Read the article

• How should I start with Lisp?

  - by Gary Rowe

  I've been programming for years now, working my way through various iterations of Blub (BASIC, Assembler, C, C++, Visual Basic, Java, Ruby in no particular order of "Blub-ness") and I'd like to learn Lisp. However, I have a lot of intertia what with limited time (family, full time job etc) and a comfortable happiness with my current Blub (Java). So my question is this, given that I'm someone who would really like to learn Lisp, what would be the initial steps to get a good result that demonstrates the superiority of Lisp in web development? Maybe I'm missing the point, but that's how I would initially see the application of my Lisp knowledge. I'm thinking "use dialect A, use IDE B, follow instructions on page C, question your sanity after monads using counsellor D". I'd just like to know what people here consider to be an optimal set of values for A, B, C and perhaps D. Also some discussion on the relative merit of learning such a powerful language as opposed to, say, becoming a Rails expert. Just to add some more detail, I'll be developing on MacOS (or a Linux VM) - no Windows based approaches will be necessary, thanks. Notes for those just browsing by I'm going to keep this question open for a while so that I can offer feedback on the suggestions after I've been able to explore them. If you happen to be browsing by and feel you have something to add, please do. I would really welcome your feedback. Interesting links Assuming you're coming at Lisp from a Java background, this set of links will get you started quickly. Using Intellij's La Clojure plugin to integrate Lisp (videocast) Lisp for the Web Online version of Practical Common Lisp (c/o Frank Shearar) Land of Lisp a (+ (+ very quirky) game based) way in but makes it all so straightforward

  Read the article

• Designing javascript chart library

  - by coolscitist

  I started coding a chart library on top of d3js: My chart library. I read Javascript API reusability and Towards reusable charts. However, I am NOT really following the suggestions because I am not really convinced about them. This is how my library can be used to create a bubble chart: var chart = new XYBubbleChart(); chart.data = [{"xValue":200,"yValue":300},{"xValue":400,"yValue":200},{"xValue":100,"yValue":310}]; //set data chart.dataKey.x = "xValue"; chart.dataKey.y = "yValue"; chart.elementId = "#chart"; chart.createChart(); Here are my questions: It does not use chaining. Is it a big issue? Every property and function is exposed publicly. (Example: width, height are exposed in Chart.js). OOP is all about abstraction and hiding, but I don't really see the point right now. I think exposing everything gives flexibility to change property and functionality inside subclasses and objects without writing a lot of code. What could be pitfalls of such exposure? I have implemented functions like: zooming, "showing info boxes when data point is clicked" as "abilities". (example: XYZoomingAbility.js). Basically, such "abilities" accept "chart" object, play around with public variables of "chart" to add functionality. What this allows me to do is to add an ability by writing: activateZoomAbility(chartObject); My goal is to separate "visualization" from "interactivity". I want "interactivity" like: zooming to be plugged into the chart rather than built inside the chart. Like, I don't want my bubble chart to know anything about "zooming". However, I do want zoomable bubble chart. What is the best way to do this? How to test and what to test? I have written mixed tests: jasmine and actual html files so that I can test manually on browser.

  Read the article

• Formalizing a requirements spec written in narrative English

  - by ProfK

  I have a fairly technical functionality requirements spec, expressed in English prose, produced by my project manager. It is structured as a collection of UI tabs, where the requirements for each tab are expressed as a lit of UI fields and a list of business rules for the tab. Most business rules are for UI fields on a tab, e.g: a) Must be alphanumeric, max length 20. b) Must be a dropdown, with values from table x. c) Is mandatory. d) Is mandatory under certain conditions, e.g. another field is just populated, or has a specific value. Then other business rules get a little more complex. The spec is for a job application, so the central business object (table) is the Applicant, and we have several other tables with one-to-many relationships with applicant, such as Degree, HighSchool, PreviousEmployer, Diploma, etc. e) One such complex rule says a status field can only be assigned a certain value if a many-side record exists in at least one of the many-side tables. E.g. the Applicant has at least one HighSchool or at least one Diploma record. I am looking for advice on how to codify these requirements into a more structured specification defined in terms of tables, fields, and relationships, especially for the conditional rules for fields and for the presence of related records. Any suggestions and advice will be most welcome, but I would be overjoyed if i could find an already defined system or structure for expressing things like this.

  Read the article

• Preventing battery from charging

  - by intuited

  I'm running on UPS power and would like to prevent the laptop's battery from charging, to increase the amount of power available to other devices. Is there a way to do this? update The machine is a Dell Latitude D400. If people want more details, just ask. Also, I'm gathering that I need to explain my desired setup a little better. I've gotten a bunch of suggestions about taking the battery out. I'm not sure if people are suggesting to take the battery out while the machine is running — this, as I understand, is not a good idea with most laptops — or to just remove the battery altogether. The latter option is not optimal, because ideally I'd like to use the 30-60 minutes of power in the laptop battery and then switch over to UPS power. The details of the switch-over may constitute a separate question, but if I can't find a way to keep the laptop battery from charging, then removing the battery from the machine altogether may be the best way to do this. I'm not sure yet if this machine will run without a battery, but I'll check that out. Other than the laptop, the UPS is just supporting a cable modem and router and a USB hub. Again in the idealized version of this setup, all the power management changes would be automated, i.e. not require replugging anything or pressing Fn-keys. I'd like the machine to start using laptop battery power when apcupsd indicates that the UPS A/C is out, and then start using UPS power, but not charging the battery, when the battery is almost depleted.

  Read the article

• mysql service do not launch

  - by ted

  Sorry for my English; I was trying to create db with rake in RoR application that has been configured for MySQL(gem installed, settings changed). After that attempt mysql-server broke: d@calister:~$ mysql ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2) mysqld is not running at all: d@calister:~$ ps aux | grep mysql d 3769 0.0 0.0 4368 832 pts/0 S+ 18:03 0:00 grep --color=auto mysql And also it doesn't seem it would like to run: d@calister:~$ sudo service mysql start start: Job failed to start Any suggestions? Thanks EDIT: d@calister:~$ sudo -u mysql mysqld 120520 18:45:11 [Note] Plugin 'FEDERATED' is disabled. mysqld: Table 'mysql.plugin' doesn't exist 120520 18:45:11 [ERROR] Can't open the mysql.plugin table. Please run mysql_upgrade to create it. 120520 18:45:11 InnoDB: The InnoDB memory heap is disabled 120520 18:45:11 InnoDB: Mutexes and rw_locks use GCC atomic builtins 120520 18:45:11 InnoDB: Compressed tables use zlib 1.2.3.4 120520 18:45:11 InnoDB: Initializing buffer pool, size = 128.0M 120520 18:45:11 InnoDB: Completed initialization of buffer pool 120520 18:45:11 InnoDB: highest supported file format is Barracuda. 120520 18:45:12 InnoDB: Waiting for the background threads to start 120520 18:45:13 InnoDB: 1.1.8 started; log sequence number 1589459 120520 18:45:13 [ERROR] Fatal error: Can't open and lock privilege tables: Table 'mysql.host' doesn't exist

  Read the article

• Not Happy With the Monochrome Visual Studio 11 Beta UI

  - by Ken Cox [MVP]

  I can’t wait for a third-party to come out with tools to return some colour to the flat, monochrome look of Visual Studio 11 (beta). What bugs me most are the icons. I feel like a newbie when I have to squint and analyze the shape of icons on the debugging toolbar just to get the one I want. (Fortunately, the meddlers didn’t mess with the keyboard commands so I’m not totally lost.) Not sure what usability studies told MS that bland is better. Maybe it is for most people, but not for me.  Gray, shades of gray and black. Ugh. And don’t get me started on the stupidity of using all-caps for window titles. Who approved that? I see that there’s a UserVoice poll on the topic (http://visualstudio.uservoice.com/forums/121579-visual-studio/suggestions/2623017-add-some-color-to-visual-studio-11-beta) but I doubt that anything will change Microsoft’s opinion in time for the release. Once a product gets to a stable beta, most non-crashing stuff gets pushed to the next version. I hope I’m proved wrong. Fortunately, Visual Studio is quite customizable. Unless ‘Bland’ is hard-coded, some registry tweaks and a collection of replacement icons should allow dissenters like me back to productivity. BTW, other than hating the UI, VS 11 beta is working quite well for me on a .NET 4 project.Note: Although my username for the ASP.NET domain includes the letters "[MVP]", I'm no longer an MVP. Apparently it's nearly impossible to change a username in the system. My apologies for the misleading identifier but I tried to have it changed without success.

  Read the article

< Previous Page | 184 185 186 187 188 189 190 191 192 193 194 195  | Next Page >