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• Guidance in naming awkward objects?

  - by GlenH7

  I'm modeling a chemical system, and I'm having problems with naming my objects within an enum. I'm not sure if I should use: the atomic formula the chemical name an abbreviated chemical name. For example, sulfuric acid is H2SO4 and hydrochloric acid is HCl. With those two, I would probably just use the atomic formula as they are reasonably common. However, I have others like sodium hexafluorosilicate which is Na2SiF6. In that example, the atomic formula isn't as obvious (to me) but the chemical name is hideously long: myEnum.SodiumHexaFluoroSilicate. I'm not sure how I would be able to safely come up with an abbreviated chemical name that would have a consistent naming pattern. From a maintenance point of view, which of the options would you prefer to see and why? Audience for the code will be just programmers, not chemists. If that guides the particulars: I'm using C#; I'm starting with 10 - 20 compounds and would have at most 100 compounds. The enum is to facilitate common calculations - the equation is the same for all compounds but you insert a property of the compound to complete the equation.

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• Magento - How to manage multiple base currencies and multiple payment gateways?

  - by Diego

  I have two requirements to satisfy, I hope someone with more experience can help me sorting them out. Multiple Base Currencies My client wants to allow visitors to place orders in whatever currency they prefer, choosing from the ones he’ll configure. Magento only supports one Base Currency, and this is, obviously, not what I need. I checked the solution involving multiple websites, but I need a customer to be registered once and stay on the same website, not to switch from one to the other and have to register/log in on each. Manage multiple Payment Gateways per currency and per payment method This is another crucial requirement, and it’s tied to the first one. My client wants to “route” payments in different currencies to different accounts. He’ll thus have one for Euro, one for USD and one for GBP. Whenever a customer pays with one of these currencies, the payment gateway has to be chosen accordingly. Additionally, the gateway should be different depending on other rules. For example, if customer pays with a Debit Card, my client will have a payment gateway configured especially for it. If customer pays with MasterCard, the gateway will be different, and so on. The complication, in this case, arises from the fact that my client uses Realex Payments and, although it would be possible for him to open multiple accounts, the Realex module expects one single gateway. In a normal scenario, we would need up to six instead: Payment with Debit Card in Euro Payment with Credit Card in Euro Payment with Debit Card in US Dollars Payment with Credit Card in US Dollars Payment with Debit Card in GB Pounds Payment with Credit Card in GB Pounds This, of course, if he doesn’t decide to accept other payment methods, such as bank transfer, which would add one more gateway per currency. Is there a way to achieve the above in Magento? I never had such complicated requirements before, and I’m a bit lost. Thanks in advance for the help.

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• SQL – Difference Between INNER JOIN and JOIN

  - by Pinal Dave

  Here is the follow up question to my earlier question SQL – Difference between != and Operator <> used for NOT EQUAL TO Operation. There was a pretty good discussion about this subject earlier and lots of people participated with their opinion. Though the answer was very simple but the conversation was indeed delightful and was indeed very informative. In this blog post I have another following up question to all of you. What is the difference between INNER JOIN and JOIN? If you are working with database you will find developers use above both the kinds of the joins in their SQL Queries. Here is the quick example of the same. Query using INNER JOIN SELECT * FROM Table1 INNER JOIN  Table2 ON Table1.Col1 = Table2.Col1 Query using JOIN SELECT * FROM Table1 JOIN  Table2 ON Table1.Col1 = Table2.Col1 The question is what is the difference between above two syntax. Here is the answer – They are equal to each other. There is absolutely no difference between them. They are equal in performance as well as implementation. JOIN is actually shorter version of INNER JOIN. Personally I prefer to write INNER JOIN because it is much cleaner to read and it avoids any confusion if there is related to JOIN. For example if users had written INNER JOIN instead of JOIN there would have been no confusion in mind and hence there was no need to have original question. Here is the question back to you - Which one of the following syntax do you use when you are inner joining two tables – INNER JOIN or JOIN? and Why? Reference: Pinal Dave (http://blog.sqlauthority.com) Filed under: PostADay, SQL, SQL Authority, SQL Joins, SQL Query, SQL Server, SQL Tips and Tricks, T SQL, Technology

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• Architecture design with MyBatis mappers

  - by Wolf

  I am creating rest web service for providing data. I am using Spring MVC for handling rest requests, and MyBatis for data access. Application should be designed in the way that it should be easy to change the data access implementation (for example to hibernate or something else) and it has to be fast (so I am trying to avoid unnecessary overcomplication of design). Now my question is about the general design of layers. I would normally use DAO interface and then different implementations for different data access strategies, but MyBatis uses interfaces to access the data. So I can think of 2 possible models but I am not sure which one is better or if there is any other nice way: Controller layer - uses Service layer interfaces services are then implemented for each data access stretegy - for example for mybatis: service implementation uses Mapper classes to access data and do whatever it needs to do with them and sends them to controller layer Controller layer - uses Service layer - service layer uses DAO interfaces DAOs are then implemented for each data access strategy - for example for mybatis: DAO class uses mapper interface to access data and sends them to service layer, service layer then do whatever it needs to do with them and sends them to controller layer I prefer the first strategy as it seems to be less complicated, but then I would have to write all of the service code for another data access again. What do you think? Thank You

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• .NET access to the GPU for compute purposes

  - by Daniel Moth

  In the distant past I talked about GPGPU and Microsoft's then approach of DirectCompute. Since then of course we now have C++ AMP coming out with Visual Studio 11, so there is a mainstream easier way for developers to access the GPU for compute purposes, using C++. The question occasionally arises of how can a .NET developer access the GPU for compute purposes from their C# (or VB) code. The answer is by interoping from the managed code to a native DLL and in the native DLL use C++ AMP. As a long term .NET developer myself, I can tell you this is straightforward. Sure, there could have been a managed wrapper for C++ AMP, but honestly that is the reason we have interop – it doesn't make much sense to invest resources to solve a problem that is already solved (most developer customers would prefer investments in other areas of Visual Studio!). Besides, interoping from C# to C++ is much easier than interoping to some of the other older approaches of GPGPU programming ;-) To help you get started with the interop approach, Igor Ostrovsky has previously shared the "Hello World" version of interoping from C# to C++ AMP in his blog post: How to use C++ AMP from C# …we then were asked specifically about how to interop from C# to C++ AMP in a Metro style application on Windows 8, so Igor delivered again with this post: How to use C++ AMP from C# using WinRT Have fun! Comments about this post by Daniel Moth welcome at the original blog.

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• Guidance in naming awkward domain-specific objects?

  - by GlenH7

  I'm modeling a chemical system, and I'm having problems with naming my objects within an enum. I'm not sure if I should use: the atomic formula the chemical name an abbreviated chemical name. For example, sulfuric acid is H2SO4 and hydrochloric acid is HCl. With those two, I would probably just use the atomic formula as they are reasonably common. However, I have others like sodium hexafluorosilicate which is Na2SiF6. In that example, the atomic formula isn't as obvious (to me) but the chemical name is hideously long: myEnum.SodiumHexaFluoroSilicate. I'm not sure how I would be able to safely come up with an abbreviated chemical name that would have a consistent naming pattern. From a maintenance point of view, which of the options would you prefer to see and why? Some details from comments on this question: Audience for the code will be just programmers, not chemists. I'm using C#, but I think this question is more interesting when ignoring the implementation language I'm starting with 10 - 20 compounds and would have at most 100 compounds. The enum is to facilitate common calculations - the equation is the same for all compounds but you insert a property of the compound to complete the equation. For example, Molar mass (in g/mol) is used when calculating the number of moles from a mass (in grams) of the compound. Another example of a common calculation is the Ideal Gas Law and its use of the Specific Gas Constant

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• How to manually set color of Unity Panel?

  - by JamesTheAwesomeDude

  I was just wondering if there's a way to set the color of the Unity panel manually, as opposed to having it derived from smooshing all the colors of the wallpaper together. (the launcher on the left side of the screen that comes default in Ubuntu is the Unity Panel, right? If not, please correct me on my terminology.) The reason I want this is because I have this cool wallpaper I found on DeviantArt, and I used GIMP to make Dawn, Dusk, and Midnight versions of it. Then, I set them with a transition effect, so that the lighting changes over the course of the day. Unfortunately, the Unity Panel turns a sickly sewer green at night (it could also be said to look like radioactive barf.) Either way, I don't like my launcher thingy looking like that. I'd prefer to stay away from programs that let you customise the Unity Panel (I'm fine with using sudo nano to edit system config files,) but I would if it were the only option. Here are some screenshots, one with a grey-themed wallpaper, one with lots of red, and the hill at night, (the one that makes the unity panel look like radioactive barf.): http://imgur.com/a/0Gqcd

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• Android-Libgdx-ProGuard: Usefulness without DexGuard? [on hold]

  - by Rico Pablo Mince

  So I'm developing a game for Android - using LibGDX - and noticed that the Android SDK (HDK, MDK, WhatTheHellEvarDK) has ProGuard built-in. Browsing the ProGuard page is like searching Google: you get that the idea is to sell some product (in this case, it's DexGuard). That leaves me wondering what features are left out of ProGuard that a game developer targeting Android should worry about. For instance, the ProGuard FAQs answer the question: "Does ProGuard encrypt string constants?" by saying: "No. String encryption in program code has to be perfectly reversible by definition, so it only improves the obfuscation level. It increases the footprint of the code. However, by popular demand, ProGuard's closed-source sibling for Android, DexGuard, does provide string encryption, along with more protection techniques against static and dynamic analysis." Alright. OK. But isn't "...improves the obfuscation level" EXACTLY what ProGuard is supposed to do? Are there better options that can be implemented at build-time in Eclipse using the Gradle options and Libgdx? In particular, the assets folder and res-specific folders will need some protection. The code itself doesn't cure cancer, but I'd prefer if nobody could copy/paste it with different game art and call it "IhAxEdUrGamE"....

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• Is C and Python enough?

  - by gruszczy

  I am very proficient in Python (including Django), which I use for most tasks. I am also quite confident with C; I am maintaining small file system in userspace written in C. Yet when I am browsing job offers I see everywhere Java/C# and sometimes C++. I have coded profesionally in C++ for half a year in a gaming company, but I don't consider myself a pro. Also I simply despise Java and C#, which I would prefer not to touch ever. But it seems to me, that I am at very unfavorable position, when it comes to career. I am browsing careers.stackoverflow.com and I don't see and pure python or C offers. I would like to find a new job abroad in about 6 months. If I find some python offer, it means doing web development (not my favorite job). Does it mean, that I have to quickly start improving my C++ skills, if I wish to find a satisfying job? What would you suggest me? EDIT Learning new technologies is not an issue. Company I am working in is an integrator. Basically every new project requires learning new technologies, sometimes custom made. During last two years I was writing SQLs by hand, using LDAP, writing GUI in Qt, working on large scale DBMS prototype, making our internal help desk system use gsm modem or writing own report system. In previous job I had to learn from basics everything what I could about games development, because I knew nothing and chose this job only because of the challene it posed. I am all about embracing new technologies. I have used Java in the past and simply didn't like it. It's dull and boring. Doesn't let me do anything cool. I have recently seen some C# in action and seems similar. I don't like it. It's like German. I don't like speaking German.

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• basic beginning emacs questions - install latest version and pick appropriate UI

  - by MountainX

  I'm running the latest Kubuntu (12.04 beta 2) and I would like to run the latest emacs (currently v24). The repos are one version behind. What's the best way to install v24 or later (and avoid future version conflicts)? Also, is there any reason not to aways use the GUI version of emacs if X is running? For example, could I set the GUI emacs version as the default text editor and use it to edit cron jobs (crontab -e)? I'm assuming the answer is yes, but since I haven't done that yet (my default editor is nano), I want to check if there are reasons I should leave nano as the default editor. Usually when I'm working on the command line I end up using nano. Now that I think about it, I have no idea why I keep doing that. Is there any downside to calling a GUI editor when working in an X terminal? EDIT: I briefly tested these two versions GNU Emacs 24.0.94.1 (x86_64-pc-linux-gnu, GTK+ Version 3.3.20) from GNU Emacs 23.3.1 (x86_64-pc-linux-gnu) installed by default in Kubuntu. This post explains some of the differences between versions. Unfortunately (for me) the defaults installed version (23.3.1, 23.3+1-1ubuntu9) is the nox version. Package: emacs23-nox Status: install ok installed Version: 23.3+1-1ubuntu9 Replaces: emacs23, emacs23-gtk, emacs23-lucid The package with version 24 opens in GUI mode by default. That's what I prefer. Some of the version 24 changes that interest me are listed in the references below. But there appear to be a multitude of different packages and versions I could install. References: What’s New In Emacs 24 (part 1) | Mastering Emacs http://www.masteringemacs.org/articles/2011/12/06/what-is-new-in-emacs-24-part-1/ " shell-mode uses pcomplete rules, with the standard completion UI. Yowzah! There’s a lot of cool, new functionality hidden away in this gem of a change." EmacsWiki: Recent Changes http://www.emacswiki.org/emacs/?action=rc;showedit=0

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• Communication between WCF service [library] and Self-host [Winform]

  - by Mur Haf Soz

  Introduction: I have a WCF service library and a self-host Winform. Service features is File explorer including (copy, move, delete, new folder, delete... etc) and Task Manager (run, kill, update list). Then now I want to add other features like chatting between self-host and client, send an image from client to self-host so when it received, it is shown in a pictureBox in a new form. Till now I have two endpoints for (Task Manager, File Manager) that runs under one service "MainService". And I set up all the connections using DotNet 4.0 WCF Configuration and Wizards, and I'm using netTcpBinding. Problem: I need to know how to communicate with between WCF service lib and self-host, so I can append a received chat from client on self-host form's textbox TextBoxChat. And also call a client callback from self-host when Send button clicked, to send the message from self-host textbox TextBoxMessage. Let's say this's self-host ChatForm So is it possible to do that in WCF? I would prefer to run ChatEndpoint under MainService, so all Endpoints use one port.

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• Style bits vs. Separate bool's

  - by peterchen

  My main platform (WinAPI) still heavily uses bits for control styles etc. (example). When introducing custom controls, I'm permanently wondering whether to follow that style or rather use individual bool's. Let's pit them against each other: enum EMyCtrlStyles { mcsUseFileIcon = 1, mcsTruncateFileName = 2, mcsUseShellContextMenu = 4, }; void SetStyle(DWORD mcsStyle); void ModifyStyle(DWORD mcsRemove, DWORD mcsAdd); DWORD GetStyle() const; ... ctrl.SetStyle(mcsUseFileIcon | mcsUseShellContextMenu); vs. CMyCtrl & SetUseFileIcon(bool enable = true); bool GetUseFileIcon() const; CMyCtrl & SetTruncteFileName(bool enable = true); bool GetTruncteFileName() const; CMyCtrl & SetUseShellContextMenu(bool enable = true); bool GetUseShellContextMenu() const; ctrl.SetUseFileIcon().SetUseShellContextMenu(); As I see it, Pro Style Bits Consistent with platform less library code (without gaining complexity), less places to modify for adding a new style less caller code (without losing notable readability) easier to use in some scenarios (e.g. remembering / transferring settings) Binary API remains stable if new style bits are introduced Now, the first and the last are minor in most cases. Pro Individual booleans Intellisense and refactoring tools reduce the "less typing" effort Single Purpose Entities more literate code (as in "flows more like a sentence") No change of paradim for non-bool properties These sound more modern, but also "soft" advantages. I must admit the "platform consistency" is much more enticing than I could justify, the less code without losing much quality is a nice bonus. 1. What do you prefer? Subjectively, for writing the library, or for writing client code? 2. Any (semi-) objective statements, studies, etc.?

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• How do I transition from WUBI to a native installation?

  - by Sammy Black

  I have Ubuntu 10.04 Lucid installed through wubi on my laptop (it came with Windows 7 preinstalled). This was my first foray into Linux, and I'm here to stay. I have no use for Windows, and yet I must manually choose not to boot into it! Should I shrink the Windows partition to something negligible and grow the Linux one using something like gparted or fdisk, and just be content that everything runs? In that case, I need to understand the filesystems. Which is which? Here's the output of $ df -h: Filesystem Size Used Avail Use% Mounted on /dev/loop0 17G 11G 4.5G 71% / none 1.8G 300K 1.8G 1% /dev none 1.8G 376K 1.8G 1% /dev/shm none 1.8G 316K 1.8G 1% /var/run none 1.8G 0 1.8G 0% /var/lock none 1.8G 0 1.8G 0% /lib/init/rw /dev/sda3 290G 50G 240G 18% /host I would prefer to start over with a clean install of 10.10 Maverick, but I fear what I may lose. Certainly, I will backup my home directory tree (gzip?), but what about various pieces of software that I've acquired from the repositories? Can I keep a record of them? By the way, I asked a similar question over on Ubuntu forums.

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• Defaults for Exporting Data in Oracle SQL Developer

  - by thatjeffsmith

  I was testing a reported bug in SQL Developer today – so the bug I was looking for wasn’t there (YES!) but I found a different one (NO!) – and I was getting frustrated by having to check the same boxes over and over again. What I wanted was INSERT STATEMENTS to the CLIPBOARD. Not what I want! I’m always doing the same thing, over and over again. And I never go to FILE – that’s too permanent for my type of work. I either want stuff to the clipboard or to the worksheet. Surely there’s a way to tell SQL Developer how to behave? Oh yeah, check the preferences So you can set the defaults for this dialog. Go to: Tools – Preferences – Database – Utilities – Export Now I will always start with ‘INSERT’ and ‘Clipboard’ – woohoo! Now, I can also go INTO the preferences for each of the different formats to save me a few more clicks. I prefer pointy hats (^) for my delimiters, don’t you? So, spend a few minutes and set each of these to what you’re normally doing and save yourself a bunch of time going forward.

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• C# Role Provider for multiple applications

  - by Juventus18

  I'm making a custom RoleProvider that I would like to use across multiple applications in the same application pool. For the administration of roles (create new role, add users to role, etc..) I would like to create a master application that I could login to and set the roles for each additional application. So for example, I might have AppA and AppB in my organization, and I need to make an application called AppRoleManager that can set roles for AppA and AppB. I am having troubles implementing my custom RoleProvider because it uses an initialize method that gets the application name from the config file, but I need the application name to be a variable (i.e. "AppA" or "AppB") and passed as a parameter. I thought about just implementing the required methods, and then also having additional methods that pass application name as a parameter, but that seems clunky. i.e. public override CreateRole(string roleName) { //uses the ApplicationName property of this, which is set in web.config //creates role in db } public CreateRole(string ApplicationName, string roleName) { //creates role in db with specified params. } Also, I would prefer if people were prevented from calling CreateRole(string roleName) because the current instance of the class might have a different applicationName value than intended (what should i do here? throw NotImplementedException?). I tried just writing the class without inheriting RoleProvider. But it is required by the framework. Any general ideas on how to structure this project? I was thinking make a wrapper class that uses the role provider, and explicitly sets the application name before (and after) and calls to the provider something like this: static class RoleProviderWrapper { public static CreateRole(string pApplicationName, string pRoleName) { Roles.Provider.ApplicationName = pApplicationName; Roles.Provider.CreateRole(pRoleName); Roles.Provider.ApplicationName = "Generic"; } } is this my best-bet?

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• Turn-based games [closed]

  - by Blue

  I've been looking for tutorials on turn-based games. I found an incomplete tutorial series by InsugentX about turn-based games. I haven't looked through it, but since it's incomplete, I worry that I won't be able to finish the scripts. I'm looking for tutorials or some good tips or advice to create turn-based games(similar to Worms). Recently I finished watching the WalkerBoys' tutorials so I am familiar with code. Where can I find some info and/or tutorials on creating Turn-based games? I'd prefer it to be video format. How can I create turn-based games (not the entire thing, only the set-up) or a turn-based event like in Worms? To explain more, How do I create 2 parties(1st player, 2nd player) exchanging turns(turn-based games and/or hotseat). While parties have characters similar to Worms(having more than 1 character within each party)? Do I use an array, an enum? I don't have any experience in turn-based games, so I would like to know how to actually make turn-based games. I can't find any reference to help me with construction of a turn-based game code similar to Worms in a programming language I can understand.

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• Netbook performs hard shutdown without warning on low battery power

  - by Steve Kroon

  My Asus EEE netbook performs a hard shutdown when it reaches low battery power, without giving any warning - i.e. the power just goes off, without any shutdown process. I can't find anything in the syslog, and no error messages are printed before it happens. I've had this problem on previous (K)Ubuntu versions, and hoped updating to Ubuntu Precise would help resolve the issue, but it hasn't. The option in the Power application for "when power is critically low" is currently blank - the only options are a (grayed-out) hibernate and "Power off". I have re-installed indicator-power to no effect. The time remaining reported by acpi is unstable, as is the time remaining reported by gnome-power-statistics. (For example, running acpi twice in succession, I got 2h16min, and then 3h21min remaining. These sorts of jumps in the remaining time are also in the gnome-power-statistics graphs.) It might be possible to write a script to give me advance warning (as per @RanRag's comment below), but I would prefer to isolate why I don't get a critical battery notification from the system before this happens, so that I can take action as appropriate (suspend/shutdown/plug in power) when I get a notification. Some additional information on the battery: kroon@minia:~$ upower -i /org/freedesktop/UPower/devices/battery_BAT0 native-path: /sys/devices/LNXSYSTM:00/device:00/PNP0A08:00/PNP0C0A:00/power_supply/BAT0 vendor: ASUS model: 1005P power supply: yes updated: Fri Aug 17 07:31:23 2012 (9 seconds ago) has history: yes has statistics: yes battery present: yes rechargeable: yes state: charging energy: 33.966 Wh energy-empty: 0 Wh energy-full: 34.9272 Wh energy-full-design: 47.52 Wh energy-rate: 3.7692 W voltage: 12.61 V time to full: 15.3 minutes percentage: 97.248% capacity: 73.5% technology: lithium-ion History (charge): 1345181483 97.248 charging 1345181453 97.155 charging 1345181423 97.062 charging 1345181393 96.970 charging History (rate): 1345181483 3.769 charging 1345181453 3.899 charging 1345181423 4.061 charging 1345181393 4.201 charging kroon@minia:~$ cat /proc/acpi/battery/BAT0/state present: yes capacity state: ok charging state: charging present rate: 332 mA remaining capacity: 3149 mAh present voltage: 12612 mV kroon@minia:~$ cat /proc/acpi/battery/BAT0/info present: yes design capacity: 4400 mAh last full capacity: 3209 mAh battery technology: rechargeable design voltage: 10800 mV design capacity warning: 10 mAh design capacity low: 5 mAh cycle count: 0 capacity granularity 1: 44 mAh capacity granularity 2: 44 mAh model number: 1005P serial number: battery type: LION OEM info: ASUS

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• Camera field of view: 3D projections & trigonometry

  - by Thomas O

  Okay, here goes. I have a camera at (Xc, Yc, Zc.) The Xc and Yc coordinates are latitude/longitude, and the Zc coordinate is an altitude in metres. I have a point at (Xp, Yp, Zp) and a field of view on the camera (Th1, Th2) - where Th1 is horizontal FOV and Th2 is vertical FOV. Given this information, I'd like to: test if the point is visible (i.e. in the camera's FOV) project the point as the camera would see it I've figured out already that the camera's horizontal view at any given distance is tan(Th1) * distance, but I don't know how to test if the point is visible. Accuracy is not critical. I would prefer a simple solution over a complicated solution, if it works well enough. The computations will be performed by a small microcontroller, which isn't very fast at things like trig functions. P.S. this is not homework, I'm doing this for some game development. It will be integrated with the real world, hence the latitude/longitude/altitude. It involves flying real RC planes through virtual hoops (or chasing virtual targets), so I have to project the positions of these hoops on a display.

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• Project Euler 19: (Iron)Python

  - by Ben Griswold

  In my attempt to learn (Iron)Python out in the open, here’s my solution for Project Euler Problem 19.  As always, any feedback is welcome. # Euler 19 # http://projecteuler.net/index.php?section=problems&id=19 # You are given the following information, but you may # prefer to do some research for yourself. # # - 1 Jan 1900 was a Monday. # - Thirty days has September, # April, June and November. # All the rest have thirty-one, # Saving February alone, # Which has twenty-eight, rain or shine. # And on leap years, twenty-nine. # - A leap year occurs on any year evenly divisible by 4, # but not on a century unless it is divisible by 400. # # How many Sundays fell on the first of the month during # the twentieth century (1 Jan 1901 to 31 Dec 2000)? import time start = time.time() import datetime sundays = 0 for y in range(1901,2001): for m in range(1,13): # monday == 0, sunday == 6 if datetime.datetime(y,m,1).weekday() == 6: sundays += 1 print sundays print "Elapsed Time:", (time.time() - start) * 1000, "millisecs" a=raw_input('Press return to continue')

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• Top 10 solution documents for Weblogic Server J2EE Feb 2014 - May 2014

  - by jhpierce -Oracle

  The following are the top 10 documents linked to SRs as solutions, for Weblogic Server J2EE issues, from Feb 2014 thru May 2014. 1163020.1 How to configure Filtering class loader in weblogic.xml   To configure the Filtering Class Loader to specify a certain package is loaded from an application, add a prefer-application-packages descriptor element. 1276593.1 WLS - How to supress servlet/JSP version details In WebLogic HTTP response header The string "X-Powered-By: Servlet/2.4 JSP/2.0" is showing up in the servlet response header.How to stop Weblogic from including servlet/JSP version details in the x-powered-by HTTP response header. 1490080.1 WebLogic Server 12.1.1.0 in a Cluster Environment Throws NotSerializableException for CDI Applications at com.sun.jersey.server.impl.cdi.CDIExtension When running in clustered environment, server start-up is not clean when you have CDI applications deployed. 1268138.1 Sample TwoWay SSL implementation for JAX-WS Webservice!   In this sample provided the recipient checks for the initiator's public certificate. Note that the client certificate can be used for authentication. 1584779.1 Socket Leaks When Calling Web-Service Over SSL This is a known bug 16810786 1598617.1 Secure WebService call throwing CANNOT RESOLVE URL FOR PROTOCOL HTTP/HTTPS through web server(APACHE) plug-in.    1056121.1 How to Timeout Weblogic Webservice Client   How to timeout a WebService client with and without using Stubs. 1568638.1 When packaging Jersey JAX-RS libraries into webapp throws NoSuchMethodError()  When attempting to include custom Jersey implementation libraries in to web application in a OSB domain. 1118264.1 WLS 10.3: Intermittent XA error: XAResource.XAER_RMERR In WebLogic 10.3, a CMP EJB sometimes throws the exception.   1608951.1 How to get More Details About Error BEA-101215 Malformed Request. Request parsing failed Code: -1   Which was seen when accessing the application via loadbalancer?

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• How do I install FreeNX server so that it works correctly?

  - by Niklas

  I've tried every single possible way of installing the server now, I've read every how to available and I still can't get it to work. Please let me know in which step I do wrong. I'm using ubuntu 10.10. I will mainly be referring to the following how-to, but also this, and this one. First I add the ppa Install Freenx Download the special Freenx package as stated in the howto, fix ownership - install it Create custom SSH key Copy the file /var/lib/nxserver/home/.ssh/client.id_dsa.key to the client and import it in nomachine (windows 7 x64) Check that both the user I will be logging in with and the user nx is in AllowedUsers in the /etc/ssh/sshd_config file Check the port that ssh is listening on Login through nomachine with my regular user account in ubuntu I always receive the message "authentication failed for [user]" when I try to log in. And I can't see the user "nx" which is said to be created during installation when I look under System-Administration-"Users & Groups". Can anyone please enlighten me if there is any step that I miss or have misunderstood? Thank you very much! (Or is there an easier way of enabling remote desktop that it can be used with a windows machine? I prefer not using VNC because I was hoping of being able to get better performance than that. And when I tried using XRDP I only received a black screen on the client.)

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• Notebook Dell Inspiron N5110 Overheating after Installing Ubuntu 12.04

  - by Gilberto Albino

  there! I am scared here! I am a Windows 7 User and decided to install Ubuntu 12.04 on my Notebook Dell Inspiron N5110 and when the Grub loads with the menu list the fan starts speeding up. If I choose windows the fan is noiseless but if I choose Ubuntu... Gosh!!! It continues speeding up and overheating... I'm very sad about that! Every time I try to use Linux... I get a diferent hardware issue related to incompatibility or bugs! When it's not graphic driver it is bug elsewhere unimaginable!!! If there is a solution for this... I wonder if someone could spend some time helping me out because... I have JUST bought this notebook because it is in the list of Certified Hardware: http://www.ubuntu.com/certification/hardware/201012-6931/ So this is sad and somehow disgusting! Linux is going for the wrong way! It's never gonna be popular while doesn't have so wide hardware support like WIndows! That's a pitty! It's very likely I won't get answered meanwhile I will switch back for windows! I prefer paying my Windows License and having a fully working system than having a free open source software that is about to explode my notebook or toast my hands before! So you linux wonderful guys help! I need somebody help (beattles so I won't cry)

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• How to check Early Z efficiency on AMD GPU with Windows 7

  - by Suma

  I have a game using DirectX 9, and a development station using Win 7 x64. I am still able to get access to another station with Vista x64 / dual booted with WinXP x86. I wanted to check early Z efficiency in the game and to my sadness all tools I have tried seem to be unable to perform this task: AMD PerfStudio AMD GPUPerfStudio 2 does not support DirectX 9 at all AMD GPUPerfStudio 1.2 does not install correctly on Windows 7. When I have tweaked the MSI package (a simple OS version check adjustment was needed), it complained the drivers I have do not provide needed instrumentation. The drivers old enough to support the GPUPerfStudio would most likely not be able to operate with my Radeon 5750 card (though this is something I am not 100 % sure, I did not attempt to try any older drivers, not knowing which I should look for) PIX PIX does not seem to contain any counters like this. It offers some ATI specific counters, but when I try to activate them, the PIX reports "PIX encountered a problem while attaching to the target program." I do not want to upgrade to DX 10/11 just to be able to profile the game, but it seems without the step I am somewhat locked with a toolset which is no longer supported. I see only one obvious options which would probably work, and that is using WinXP (or with a little bit of luck even Vista) station, perhaps with some older AMD card, to make sure GPUPerfStudio 1.2 works. Other than that, can anyone recommend other options how to check GPU HW counters (HiZ / EarlyZ in particular, but if others would be enabled as well, it would be a nice bonus) for a DirectX 9 game on Windows 7, preferably on AMD GPU? (If that is not possible, I would definitely prefer switching GPU to switching the OS, but before I do so I would like to know if I will not hit the same problem with nVidia again)

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• Code maintenance: keeping a bad pattern when extending new code for being consistent or not ?

  - by Guillaume

  I have to extend an existing module of a project. I don't like the way it has been done (lots of anti-pattern involved, like copy/pasted code). I don't want to perform a complete refactor. Should I: create new methods using existing convention, even if I feel it wrong, to avoid confusion for the next maintainer and being consistent with the code base? or try to use what I feel better even if it is introducing another pattern in the code ? Precison edited after first answers: The existing code is not a mess. It is easy to follow and understand. BUT it is introducing lots of boilerplate code that can be avoided with good design (resulting code might become harder to follow then). In my current case it's a good old JDBC (spring template inboard) DAO module, but I have already encounter this dilemma and I'm seeking for other dev feedback. I don't want to refactor because I don't have time. And even with time it will be hard to justify that a whole perfectly working module needs refactoring. Refactoring cost will be heavier than its benefits. Remember: code is not messy or over-complex. I can not extract few methods there and introduce an abstract class here. It is more a flaw in the design (result of extreme 'Keep It Stupid Simple' I think) So the question can also be asked like that: You, as developer, do you prefer to maintain easy stupid boring code OR to have some helpers that will do the stupid boring code at your place ? Downside of the last possibility being that you'll have to learn some stuff and maybe you will have to maintain the easy stupid boring code too until a full refactoring is done)

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• Installation experiences with NDepend under Win7/64 with restricted user permissions

  - by Marko Apfel

  Today Patrick gives me a new license for his static code analysis tool NDepend for my fresh machine with Win7/64. This platform is new for me, so some things are different to Win XP. Maybe that till yet some of these things are not well enough understandanded from me. So i stepped in some traps. Here are my notes to get NDepend running. Download of NDepend Professional Edition from http://www.ndepend.com/NDependDownload.aspx   Extracted to c:\program files (x86)\NDepend   Started NDepend.Install.VisualStudioAddin.exe this failed with Okay – sounds plausible.   Copy NDependProLicense.xml to this folder   Next try with NDepend.Install.VisualStudioAddin.exe opens the integration dialog   Registering in Visual Studio failed with   Manually unblock as described (first solution hint)   and here comes my largest understanding problem. After unblocking this file   and closing this dialog the next opening shows the blocking again: Why? So the same error during integration pops up.   Okay – tried the second solution hint with copying folders Copy all to a full accessable folder under c:\temp\   Now the installation works   looks good   copying the folders back to c:\program files (x86)\NDepend   starting Visual Studio failed with     Okay – copying the folder to a private application folder c:\users\apf\My Applications\NDepend   Installing again   Now Visual Studio runs and NDepend is integrated Nevertheless my machine is only used by me, i prefer “all user”-installations. The described way works sadly only for my account.

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