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• A roadmap to learn PHP efficiently

  - by Goma

  I have been always confused when I want to start learning PHP. I got afraid of learning any bad habbits or things that could lead to unsecure applications. If you can help and hope you can, I would like to ask you experts in PHP to help me and put a roadmap for me from the beginning. It would be better if it is a series of books so when I finish a book I go to the next or a series of videos or whatever. No worries about how much the books may cost, most importantly that I will learn the right things. Thanks.

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• I'm a premature optimizer

  - by Matthew Day

  I work in a small sized software/web development company. I have gotten into the habit of optimizing prematurely, I know it is evil and promotes bad code... But I have been working at this firm for a long while and I have deemed this as a necessary evil. It has never caused me an issue so far in the past, but it might if I get partners or a successor. The point of this long-winded speech is that, should I change my evil practices to 'save face' and to help out in the future?

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• Is it OK to push my code to GitHub while it is still in early development?

  - by marco-fiset

  I have some projects that are in a very early development state. They are nowhere nearing completion but I do host them (as public repos) on GitHub because: I have multiple computers and I want access to my code everywhere I want a backup for my code I want it to be easy if someone wants to collaborate in some way I use GitHub Issues as a poor man's project management software Is it OK to publish a project on GitHub even when it is very early in the development? I am a bit concerned about someone to come by and say OMG this is total BS, this code is so bad! while looking at unpolished/still in development/not tested code. What are your practices when you start new public projects? Do you wait until you have something substantial to show or you create a bare repo directly on GitHub and start from there? I used GitHub throughout this post but this applies to every code hosting service out there.

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• Wine throwing errors since going to 13.10

  - by serilain

  After upgrading to Ubuntu 13.10, running any program in Wine produces the following errors (via CLI): wine: Unhandled page fault on read access to 0x00000000 at address (nil) (thread 000f), starting debugger... wine: Unhandled page fault on read access to 0x00000000 at address (nil) (thread 0014), starting debugger... wine client error:14: write: Bad file descriptor err:wineboot:start_services_process Unexpected termination of services.exe - exit code -1073741819 (These also generate two popup windows saying that an undefined application has crashed). After this, the program I was trying to run in the first place executes as normal. Any idea how to fix this?

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• Detailed Modern Opengl Tutorial?

  - by Kogesho

  I am asking for a specific modern opengl tutorial. I need a tutorial that does not skip to explain any lines of code. It should also include different independent objects moving/rotating (most tutorials use only one object), as well as imported 3d objects and collision detection for them. It should also avoid stuff that won't be used. Arcysnthesis for example gives a new concept, and after teaching it, in the next tutorial, it explains how bad it is for performance and introduces another method. Do you know any?

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• How to start vnc server on-demand (not on boot)

  - by QRohlf

  I have a vps which has the basic xfce environment & tightvncserver installed. I would like to have tightvncserver automatically start whenever I initiate a connection to the port it runs on (in my case, 5901). I've seen posts about using inetd or xinetd to do this, but I've also seen lots of posts saying that (x)inetd is not included in Ubuntu for a reason, and that it's a bad idea to use it. Anyways, I'm looking for a way to auto-start tightvncserver whenever there's an incoming connection to port 5901, preferably with as few dependencies as possible

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• What is default username & password for a persistent pendrive?

  - by sdos

  I am trying out Ubuntu 11.04 on a netbook. I created a live USB to boot from using this: http://www.pendrivelinux.com/universal-usb-installer-easy-as-1-2-3/ and the system boots up into Ubuntu from the USB stick, great! bad news is I am presented with a login form.... I did not set a password so I have no idea what it could be.... username: other password: I have tried no password, no luck... I tried ubuntu, no luck Any Ideas why it has a password, and what it might be or how I can set the password?

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• Installing Solaris Studio 12.2?

  - by KronoS

  I'm having a dickens of a time installing Solaris Studio 12.2 on Ubuntu 10.04. I found this guide, however using the alien option isn't finding the correct files. I'm not exactly sure on the syntax of alien, its kinda alien to me. (sorry for the bad pun) Also, when I download the tar file, and extract it, there are errors everytime saying things like: "operation not permitted" cannot creat symlink to '../prod/bin/cc': Operation not permitted I've extracted with super user access, but to no avail. Any success from anyone else?

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• Linux OpenGL programming, should I use GLX or any other?

  - by pahnin

  I'm new to OpenGL and found that there are a lot of libraries to do that in C, and I also found that glx is most friendly with Linux X Server, I just want to do basic stuff, and I cannot find any tutorials for GLX. Is GLX a bad thing? I just want to do some small graphical things without installing many libraries and getting confused. Can anyone suggest me something which has tutorials and simple to compile? I found a link with an example with GLX and it worked perfect with no errors: anyone please suggest where I can find nice documentation or any better libraries.

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• Trouble installing 12.04 from cd, blank screen with cursor

  - by Master Morality

  I should preface this with saying that this is not my first rodeo. I started playing with Linux in 1999 (Red Hat) and I'm currently typing this on a ThinkPad running 12.04... When I put in the live cd, I boots, and I can get to the option menu to decide whether to install/run etc, but at any point beyond that I get only a single caret. I can type stuff in, but it goes no where. I've tried the usual stuff like running with nomodeset (thinking it was the intel HD400 graphics, but it is integrated graphics...) here is the setup: ASUS p8z77 pro (with the Atheros AR9485 wifi supposedly, but I'm not that far yet) i7 3370k 8gig X 2 G.Skill Crucial M4 (256 gig) LG Super-multi DVD re-writer no video card UPDATE: I though may be it was a bad image on the CD, so I downloaded another iso, and used a USB disk. now it boots to a blank screen. I can see the "press any key to get options" screen, but after that, it just goes to a blank screen.

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• Putting coworkers as references in CV [closed]

  - by Jaded

  My friend is working in one organisation for some time and wants to change a job. Problem is that motivation is money related (management is refusing to raise salary without any explanation despite 1) they don't have any questions nor problems related to his work 2) they promised raise long ago) and they won't find anyone to replace him. So they not just won't recommend him, but surely will say he is bad specialist and person as he leaves. Don't put that work in CV is not an option, so he thinks the possible solution is to reference his co-workers and teammates. He didn't work for them as employee, but he worked with them, so their (100% positive) feedback looks like fair compensation of what management will say. Is that correct? Looking for interviewers/employers opinion.

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• What happened to the this type of naming convention?

  - by Smith

  I have read so many docs about naming conventions, most recommending both Pascal and Camel naming conventions. Well, I agree to this, it's ok. This might not be pleasing to some, but I am just trying to get your opinion on why you name your objects and classes in a certain way. What happened to this type of naming conventions, and/or why are they bad? I want to name a structure, and I prefix it with "struct". My reason is that, with IntelliSense, I see all structures in one place, and anywhere I see the struct prefix, I know it's a "struct": structPerson structPosition another example is the enum, although I may not prefix it with "enum", but maybe with "enm": enmFruits enmSex again my reason is that in IntelliSense, I see all my enumerations in one place. Because .NET has so many built-in data structures, I think this helps me do less searching. Note that I used .NET in this example, but I welcome language agnostic answers.

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• Programming to ANSI standards (for engineering)

  - by Jake

  I am currently tasked to write a software to help engineers design standard compliant designs. If there is a bad design, software will report an error or warning. Maybe it's just me, but anyone who has done this should be familiar with the massive amounts of ANSI standards tables like this one: http://en.wikipedia.org/wiki/Nominal_Pipe_Size Computers are, as its name suggest, computing machines, not lookup machines. I feel that feeding formulas into computers and churning out standard compliant designs is much more efficient than doing memory intensive data lookups that are prone to human input errors and susceptible to "data updates". I actually think that there are formulas to calculate all those numbers, but nobody so far could give me that information. Anyone been through this before? What is THE best approach to this? Thanks for sharing.

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• test coverage reality

  - by iPhoneDeveloper

  I am NOT doing test driven development and I write my test classes after the actual code is written. In my current project I have a test coverage of(Line coverage) %70 for 3000 lines of Java code.(Using JUnit, Mockito and Sonar for testing) But while I feel actually I am not covering and catching %70 of the problems that can occur. So my question is in theory is that possible to have a %100 Line coverage but in reality it is meaningless because of low quality of the test code and maybe a %40 well written test code is much better than a bad %100 coverage? or we can always say line coverage more or less gives the percentage of all covered issues?

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• What are the crappy code games - the background?

  - by simonsabin

  This is part of a series on the Crappy Code Games The background Who can enter? What are the challenges? What are the prizes? Why should I attend? Tips on how to win   The Background Fusion IO came to us a while back wanting to run a competition to highlight the how bad code can really impact your system. We’ve all seen it, I saw an example yesterday where someone had implemented a cursor on a whole table just to update a few rows, something like this. declare cUpdateCursor cursor for  ...(read more)

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• I am new to game development, what do I need to know? [closed]

  - by farmdve

  I am unsure if this question is a duplicate, I hope it isn't. Are there any resources on the terminology when doing game development? Because, even if you tell me to learn some graphics API, how would I understand the things it does, if I am not well into the terminology(voxel,mesh,polygon,shading). What about the math that is involved in the game(geometry) or the concept of the gravity,collision detection in the game and their respective maths? I am very bad at math, never was good, because I have ADHD, but I won't give up just yet. I look at a game, and I see "textures", but how am I walking on them, how do they take substance so I don't fall off of them? And depth? This is what I need information about, not just a link to a library like SDL(which I have compiled under MinGW and MinGW-W64) and tell me to learn it and the cliché answer "start simple/small". I hope the question(s) are not too vague.

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• How can I undo this key mapping?

  - by user273872

  First of all sorry my punctuation will be bad. its hard to type when keys are not doing what you expect. Eg it keeps scaring the **** out of me by taking a screen shot when I push the up arrow lolol So anyways, I broke a key on my keyboard and used xkeycaps to remap it to an unused key which worked. But then I realized it screwed up other keys... I think this is the program I used http://www.jwz.org/xkeycaps/man.html And then after doing the modifications I found out how to save them from the second answer in this question How to Map my enter key to a different key down where it says this "When you are happy with your current keymap and want to use it in future X-sessions, run the following command to save it: xmodmap -pke ~/.Xmodmap"

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• Latest alestic ec2 Ubuntu instance seems broken

  - by Kave

  I am using alestic.com ec2 Ubuntu instances now for some time and never had a problem with. Today I created a new Ubuntu 12.04 LTS Precise EBS boot on US-east-1, seems to be a bad build. While doing a sudo apt-get update it breaks and says: W: Failed to fetch bzip2:/var/lib/apt/lists/partial/us-east-1.ec2.archive.ubuntu.com_ubuntu_dists_precise-updates_main_source_Sources Hash Sum mismatch This is on a fresh instance. So I recon something went wrong when creating it. What can be done to fix it?

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• Is it okay to have many Abstract classes in your application?

  - by JoseK

  We initially wanted to implement a Strategy pattern with varying implementations of the methods in a commmon interface. These will get picked up at runtime based on user inputs. As it's turned out, we're having Abstract classes implementing 3 - 5 common methods and only one method left for a varying implementation i.e. the Strategy. Update: By many abstract classes I mean there are 6 different high level functionalities i.e. 6 packages , and each has it's Interface + AbstractImpl + (series of Actual Impl). Is this a bad design in any way? Any negative views in terms of later extensibility - I'm preparing for a code/design review with seniors.

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• How do you make a real low profile exit from your current job?

  - by Fanatic23

  This came up recently when a friend of mine left her current job. She really wanted to make a very low profile exit, but the news leaked and there really was too much noise -- some bad, some downright embarrassing not to mention management foul mouthing her. All of this, despite her contribution to the team being very substantial. So here's my question: How do you make a real low profile exit from a company? Is something like that even a reality given that a fair number of people will know you in office, not to mention your linkedin and facebook.

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• Creating Objects

  - by user1424667

  I have a general coding standard question. Is it bad practice to initialize and create an object in multiple methods depending on the outcome of a users choice. So for example if the user quits a poker game, create the poker hand with the cards the user has received, even if < 5, and if the user played till the end create object to show completed hand to show outcome of the game. The key is that the object will only be created once in actuality, there are just different paths and parameters is will receive depending on if the user folded, or played on to the showdown.

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• Progressbar patterns (Eclipse)

  - by JesperE

  I've struggled quite a bit with Eclipse and progress-monitors to try to have good progressbars which report useful progress information to the user. Inevitably the code gets cluttered with lots of things like if (monitor.isCancelled()) return; ... lengthyMethodCall(monitor.newChild(10)); and all over the place I need to pass a IProgressMonitor as an argument to my methods. This is bad, for several reasons: The code gets cluttered with lots of code which is not relevant to what the function actually does. I need to manually guesstimate which parts of the code takes time, and which parts do not. It interacts badly with automated tests; where much of the information which goes into a progressbar instead should be logged for later inspection. Is there a way out of this? Are there tools which can help me out with one or more of these problems? Should I be looking at Aspect-Oriented Programming tools, or are there other alternatives?

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• How to convince a non-technical client that their application spec needs to be simplified?

  - by Ryan

  Often times I am faced with the situation where a new client comes to me with an application that has literally 100s of unnecessary features and it is quite clear that things need to be drastically simplified for the project to have any chance of succeeding. How do you convince the client to take a more MVP approach and simplify? edit: So the current top answer is to provide the client with a time/cost estimate for the huge application. I'm not too fond of this answer because it doesn't address the real problem with this situation. And that is - it's a bad practice to spec out a massive application and then try and build it from the get go. I feel much more comfortable initially building a small, simple MVP foundation. And then adding small features to that foundation one by one. So how do I convince the client to approach building software in this way?

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• How do I add pcie_aspm=force to my boot options?

  - by nargo7

  I just upgraded to 11.10 from 11.04 on my laptop (I don't have Windows) by downloading from the Ubuntu website. The laptop battery is in bad condition, but I was using it with the 11.04 plugged to AC all the time, and everything was fine. After installing 11.10, the laptop seems to not notice that it is connected to AC, so it shuts down a few minutes after starting. I read that I have to type pcie_aspm=force in the boot command, so I tried accessing it by pressing the "F6" key while booting, and then the other F keys, but nothing happened. I also found that I can write that instruction in the terminal window, but I don't know in which file or location. I would appreciate some help, but I am not a computer engineer, so please write the instructions in plain English.

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• Not enough space left in the hard drive. How to proceed?

  - by jimbobjgr

  Where do I begin... I can hardly do anything on Ubuntu 12.04. I am very close to removing and returning to Windows. First I could not load it because the graphics appeared to be running low but somehow that stopped happening and I could log on. Now I can not download anything or I get this message Cannot write: No space left on device. I tried trouble shooting this issue but every time I try and fix the problem I am blocked by this message E: Write error - write (28: No space left on device) E: Can't mmap an empty file E: Failed to truncate file - ftruncate (9: Bad file descriptor) E: The package lists or status file could not be parsed or opened. $ OLD=$(ls -tr /boot/vmlinuz-* | head -n -2 | cut -d- -f2- | awk '{print "linux-image-" $0}') Ubuntu is also running incredibly slow and I cant get anything done! Please help this is driving me mad!

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