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• Techniques for Working Without a Debugger [closed]

  - by ashes999

  Possible Duplicate: How to effectively do manual debugging? Programming in a debugger is ideal. When I say a debugger, I mean something that will allow you to: Pause execution in the middle of some code (like a VM) Inspect variable values Optionally set variable values and call methods Unfortunately, we're not always blessed to work in environments that have debuggers. This can be for reasons such as: Debugger is too too too slow (Flash circa Flash 8) Interpreted language (Ruby, PHP) Scripting language (eg. inside RPG Maker XP) My question is, what is an effective way to debug without a debugger? The old method of "interleave code with print statements" is time-consuming and not sufficient.

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• Robots meta tag with "noimageindex"

  - by jimy

  I have some doubt regarding noimageindex value in meta robots tag. If I add this tag on my page say http://www.example.com/somepage/someaction.php and on that page the images are served from another page say http://www.exampleimg.com. Then will the tag has meaning. I mean to say will the images will be ignored by bots? Or exampleimg is not affected by that tag. And all images will be indexed? Note: We want to stop indexing of the images on that particular page.

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• Why make the login page to a single page application a separate page?

  - by ryanzec

  I am wondering why it seems to be popular to have the login page of a SPA be a separate page that is not page of the SPA (as in loaded and send data through ajax requests)? I only thing I can think of is security but I can't think a specific security reason. I mean the only thing that come to mind is that if your login page in part of the SPA, it sends the username/password through ajax which can be seen by such tools like firebug or web inspector however even if you send it as a normal POST request, there are other tools that can easily capture this data (like fiddler, httpscoop, etc...). Is there something I am missing?

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• How to make the switch to C++11?

  - by Overv

  I've been programming in C++ for a while now, but mostly thinks centered around the low-level features of C++. By that I mean mostly working with pointers and raw arrays. I think this behavior is known as using C++ as C with classes despite me only having tried C recently for the first time. I was pleasantly surprised how languages like C# and Java hide these details away in convenient standard library classes like Dictionaries and Lists. I'm aware that the C++ standard library has many convenience containers like vectors, maps and strings as well and C++11 only adds to this by having std:: array and ranged loops. How do I best learn to make use of these modern language features and which are suitable for which moments? Is it correct that software engineering in C++ nowadays I'd mostly free of manual memory management? Lastly, which compiler should I use to make the most of the new standard? Visual Studio has excellent debugging tools, but even VS2012 seems to have terrible C++11 support.

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• introducing automated testing without steep learning curve

  - by esther h

  We're a group of 4 developers on a ajax/mysql/php web application. 2 of us end up focusing most of our efforts on testing the application, as it is time-consuming, instead of actually coding. When I say testing, I mean opening screens and testing links, making sure nothing is broken and the data is correct. I understand there are test frameworks out there which can automate this kind of testing for you, but I am not familiar with any of them (neither is anyone on the team), or the fancy jargon (is it test-driven? behavior-driven? acceptance testing?) So, we're looking to slowly incorporate automated testing. We're all programmers, so it doesn't have to be super-simple. But we don't want something that will take a week to learn... And it has to match our php/ajax platform... What do you recommend?

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• Wireless network unstable and often WPA2 protected networks just don't work

  - by Pedro

  I have an issue with my wireless network,so that the connection is working for only a few minutes, after which my browser no longer is able to load pages, even if the wireless is still active/connected. Furthermore, most of the time WPA2-personal protected networks don't work, (yesterday was the first time it worked - for a few minutes). By "don't work" I mean that it seems to successfully connect, but the browser can't load pages. I am running Ubuntu 10.10 32bit, and my wireless card is a RaLink rt3090. No changes have been done to any settings since Ubuntu was installed - networking began working on its own after the installation - but as described in first paragraph not very well.

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• Lessons learnt in implementing Scrum in a Large Organization that has traditional values

  - by MarkPearl

  I recently had the experience of being involved in a “test” scrum implementation in a large organization that was used to a traditional project management approach. Here are some lessons that I learnt from it. Don’t let the Project Manager be the Product Owner First lesson learnt is to identify the correct product owner – in this instance the product manager assumed the role of the product owner which was a mistake. The product owner is the one who has the most to loose if the project fails. With a methodology that advocates removing the role of the project manager from the process then it is not in the interests of the person who is employed as a project manager to be the product owner – in fact they have the most to gain should the project fail. Know the time commitments of team members to the Project Second lesson learnt is to get a firm time commitment of the members on a team for the sprint and to hold them to it. In this project instance many of the issues we faced were with team members having to double up on supporting existing projects/systems and the scrum project. In many situations they just didn’t get round to doing any work on the scrum project for several days while they tried to meet other commitments. Initially this was not made transparent to the team – in stand up team members would say that had done some work but would be very vague on how much time they had actually spent using the blackhole of their other legacy projects as an excuse – putting up a time burn down chart made time allocations transparent and easy to hold the team to. In addition, how can you plan for a sprint without knowing the actual time available of the members – when I mean actual time, the exercise of getting them to go through all their appointments and lunch times and breaks and removing them from their time commitment helps get you to a realistic time that they can dedicate. Make sure you meet your minimum team sizes In a recent post I wrote about the difference between a partnership and a team. If you are going to do scrum in a large organization make sure you have a minimum team size of at least 3 developers. My experience with larger organizations is that people have a tendency to be sick more, take more leave and generally not be around – if you have a team size of two it is so easy to loose momentum on the project – the more people you have in the team (up to about 9) the more the momentum the project will have when people are not around. Swapping from one methodology to another can seem as waste to the customer It sounds bad, but most customers don’t care what methodology you use. Often they have bought into the “big plan upfront”. If you can, avoid taking a project on midstream from a traditional approach unless the customer has not bought into the process – with this particular project they had a detailed upfront planning breakaway with the customer using the traditional approach and then before the project started we moved onto a scrum implementation – this seemed as waste to the customer. We should have managed the customers expectation properly. Don’t play the role of the scrum master if you can’t be the scrum master With this particular implementation I was the “scrum master”. But all I did was go through the process of the formal meetings of scrum – I attended stand up, retrospectives and planning – but I was not hands on the ground. I was not performing the most important role of removing blockages – and by the end of the project there were a number of blockages “cropping up”. What could have been a better approach was to take someone on the team and train them to be the scrum master and be present to coach them. Alternatively actually be on the team on a fulltime basis and be the scrum master. By just going through the meetings of scrum didn’t mean we were doing scrum. So we failed with this one, if you fail look at it from an agile perspective As this particular project drew to a close and it became more and more apparent that it was not going to succeed the failure of it became depressing. Emotions were expressed by various people on the team that we not encouraging and enforced the failure. Embracing the failure and looking at it for what it is instead of taking it as the end of the world can change how you grow from the experience. Acknowledging that it failed and then focussing on learning from why and how to avoid the failure in the future can change how you feel emotionally about the team, the project and the organization.

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• Change screen resolution from terminal

  - by Keith

  When I enabled my Nvidia graphics card, it changed the resolution of my screen to larger than my screen. As the result I cannot access any functions that were previously on the right side of my screen. How do I undo this? I originally had 8.04 and was able to change the resolution to whatever I wanted. I'm a new user and can copy and paste commands from a post to terminal mode but that's about it. I have no idea what they are or what they mean.

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• What is the state-of-the-art for using Broadcom Crystal hardware?

  - by echo-flow

  I just bought a Dell Mini 1012, which comes with a Broadcom Crystal media accelerator chip. I'd like to know what is the current state-of-the-art with regard to using this hardware on Ubuntu? What I mean by this is, what is the best way to install drivers to make use of this hardware, and what media players currently support it? I've read that XBMC currently does, but what about gstreamer? Ideally, I'd like to find a solution so that I can accelerate Flash videos using the device. It seems like one strategy may be to download Flash videos to the hard drive and play them with an external, Crystal-enabled media player, and so that seems like one option, but I'm wondering if any of the free flash alternatives (Gnash and Lightspark) support hardware acceleration of flash video using the Crystal API? It seems like there is a lot of information about all of this on the web, but it's not consolidated, and seems like a rapidly moving target, so any insight anyone may have into this would be appreciated.

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• How to Run PowerShell Commands on Remote Computers

  - by Chris Hoffman

  PowerShell Remoting allows you to run individual PowerShell commands or access full PowerShell sessions on remote Windows systems. It’s similar to SSH for accessing remote terminals on other operating systems. PowerShell is locked-down by default, so you’ll have to enable PowerShell Remoting before using it. This setup process is a bit more complex if you’re using a workgroup – for example, on a home network — instead of a domain. How to Make Your Laptop Choose a Wired Connection Instead of Wireless HTG Explains: What Is Two-Factor Authentication and Should I Be Using It? HTG Explains: What Is Windows RT and What Does It Mean To Me?

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• How much code should I be responsible for?

  - by Mick

  Through colleagues and exit interviews, I have heard that at my small company I am "responsible" for anywhere from 3-10 times more code than I would be at another job. I'm trying to look for some sort of fuzzy metric that I can use to compare my workload with others in my field. By "code responsibility", I don't mean "I'm the only one who knows area X of the code base" (though sadly, it's often true in a startup environment), but rather am referring to a number like "code_base_size/number_of_developers". Are there any resources I can use to help me more accurately measure my work load than just counting lines of code?

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• Triple buffering causes input lag?

  - by user782220

  Consider some time in between two vsyncs. Suppose the first display buffer is being used to display the current image, and suppose the game was really fast and computed and rendered the next image to the second display buffer and the next one after that to the third display buffer. That is the rendering to the second and third display buffer happens so fast that it occurs before the next vsync. Suppose input from the user comes in now. What you would like is for the results of the input to show up on the next vsync or (probably more typical) the vsync after that. However, with the third display buffer already rendered the input can only effect the image after that. Meaning the input will only take effect at best 3 vsyncs later. I wish i had an image to show the exact timings of what I mean.

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• Can these game be fully coded in html5/javascript?

  - by RufioLJ

  I mean the mechanics of the game. Would it be possible? -Pokemon GBA series, rendering the world would be easy, but what about battle mechanics? -MapleStory, after seen dragonbound.net which is an identical copy of Gunbound I would think it's rather possible, but I'm still not sure if javascript can handle all the mechanics of the world. It would be heavy on resources I guess? I'm asking this because I'm really interested in html5 game develop(I really think in a future will destroy flash on game dev ground). I want to have an idea of how far games developed with the html5/javascript technology can go. I got especially inspired by dragonbound. I really think it pushes htmlt/javascript to the limits (game dev).

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• How can I reduce the time taken to login by postponing/delaying some startup applications?

  - by koushik

  I have setup some applications to startup on each login (e.g., redshift-gtk, gtg) automatically but after adding these to startup applications (System -> Preferences -> Startup Applications) obviously the time taken to login has increased. Due to all this the time it takes for my panels, desktop etc to appear is too long - until which I am forced to wait. I don't need these apps to be available immediately, but it would be good if they startup eventually, meanwhile the ubuntu menu/panel is available for running other apps that I might need to. I tried using at command, with the intention of editing all startup applications to put the commands in the at queue, but this didn't work since the apps don't get the necessary environment variables (like DISPLAY). Is this what nice command is used for? Any other ideas how I can accomplish this? If possible, I would like to avoid editing the startup applications commands, since this would mean a lot of effort to replicate on other machines I use.

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• Create a fast algorithm for a "weighted" median

  - by Hameer Abbasi

  Suppose we have a set S with k elements of 2-dimensional vectors, (x, n). What would be the most efficient algorithm to calculate the median of the weighted set? By "weighted set", I mean that the number x has a weight n. Here is an example (inefficient due to sorting) algorithm, where Sx is the x-part, and Sn is the n-part. Assume that all co-ordinate pairs are already arranged in Sx, with the respective changes also being done in Sn, and the sum of n is sumN: sum <= 0; i<= 0 while(sum < sumN) sum <= sum + Sn(i) ++i if(sum > sumN/2) return Sx(i) else return (Sx(i)*Sn(i) + Sx(i+1)*Sn(i+1))/(Sn(i) + Sn(i+1)) EDIT: Would this hold in two or more dimensions, if we were to calculate the median first in one dimension, then in another, with n being the sum along that dimension in the second pass?

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• Useful git commit messages for merged branches

  - by eykanal

  As a follow-up to this question: If I'm working on a team by myself, I can maintain useful commit messages when merging branches by squashing all the commits to a single diff and then merging that diff. That way I can easily see what changes were introduced in the branch, and I have a single summary describing the feature/change/whatever that was accomplished in that branch when browsing the master branch. My question now is, how can I accomplish this when working with a team? In that situation, the branches will be pushed to a remote repository, meaning that I can't squash all the commits in the branch down to a single commit. If the branch is public, can I still have a single useful merge commit in the master branch? (By "useful" I mean that the commit in the master line tells me (1) a useful summary of what was done in the branch and (2) diffs of the same.)

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• Ubuntu One not syncing and not providing feedback

  - by Joe

  Firstly, I apologize for not being more specific with my problem, but Ubuntu One is just not providing me with any information. It appears to be working, it states that "syncronization in progress..." but it never actually syncronizes (by never I mean 3 days). When I first selected a folder to sync using Ubuntu One it took on the order of hours to sync over 500MB of files - it uploaded the folder hierarchy first and populated the folders over a few hours. That is not happening at all now. Please let me know if there is a way I can get more information out of Ubuntu One that I can post and hopefully resolve this issue. Thanks, Joe

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• Surface Pro 3 first impressions

  - by John Paul Cook

  I traded in my Surface 2 (the trade-in program is now over) and bought a Surface Pro 3 with an i7 processor and 8 GB of ram. I greatly prefer the 3 by 2 aspect ratio of the Surface 3. After only one day of ownership, I’ve decided to purchase a docking station. I have a 7 year old desktop with a quad core Q6600 processor overclocked to 3.0 GHz and 8 GB of ram. It has a Plextor 512 MB SSD as the primary drive. It’s a very capable machine, but it does have a little bit, and I do mean only a little bit,...(read more)

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• Unable to install ia32-libs package

  - by Ron Thomas

  I need to manually install the drivers for my graphics card, which is an ATI 2600 xt. But I am using a 64-bit platform and to do so i need the ia32-libs package. i have scoured the net for fixes, workarounds etc. but have found none that work. the output i get after trying apt-get is: Reading package lists... Done Building dependency tree Reading state information... Done Package ia32-libs is not available, but is referred to by another package. This may mean that the package is missing, has been obsoleted, or is only available from another source E: Package 'ia32-libs' has no installation candidate I am running linux mint 12

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• Affect on speed of wordpress membership plugins -- currently trying s2member [migrated]

  - by Richard

  I'm taking a look at s2member -- I have it running, and my site is very slow -- it's taking on average about 9 or 10 seconds to load. This is the site: http://richardclunan.net I want to figure out if the s2member plugin is causing it to be slow. And whether there are other faster membership plugins... 3 questions: Are there particular settings or things specific to s2member that I should take care of to ensure s2member doesn't make my site slow? If I deactivate the plugin to test the speed of the site with the plugin deactivated, will that mean I'll have to respecify s2member settings when I reactivate it? After it's reactivated will members' accounts work ok? Anybody have observations on s2member or other wordpress membership site plugins and their affect on site speed?

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• Developing a computer system based on Nand2Tetris [on hold]

  - by Ryan

  I recently finished a book called Nand2Tetris (nand2tetris.org) where I built my own computer system from scratch with its own machine language, assembly code, and a high level language called Jack that's translated to Hack binary. However, I feel like the "computer" I built throughout the course of this book (called the Hack computer) is a bit too simple for various reasons: 1) There are only two registers (D and A), whereas most computers have much more 2) Peripheral devices like mouse and keyboard have to be directly implemented 3) Peripheral devices use a pre-planned shared memory map to communicate with the CPU instead of using interrupts (which aren't covered at all) 4) Jack (the high level language) code doesn't compile to Assembly code directly, instead it compiles to an intermediate language, which in turn gets translated to Assembly. 5) There is no ROM or permanent storage device, everything is stored in RAM 6) No support for colored monitor, networking or sound I would like to build a more complicated computer system now based on what I've learned from Nand2Tetris. Does anyone know of any good resources or books to get started on this? (BTW by computer system I mean software that can emulate the hardware of a virtual computer with its own unique instruction set)

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• SQL Server v.Next (Denali) : Why you should start testing early

  - by AaronBertrand

  Denali is coming, whether you like it or not. You may not be an early adopter and you may not have plans on your current calendar, but at some point you will need to move your apps and databases to this release - or one very much like it. There are a lot of great new features you will be able to take advantage of, but not everything is a double rainbow. There are some changes that will break your spirit if you let them. What does it mean? I go over several breaking changes in my presentation that...(read more)

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• How do I access and enable more icons to be in the system tray?

  - by Jon

  So I'm messing around with Natty a little, and I noticed that all the apps that would normally use the system tray (or "notification area"?) aren't displaying there. Is that a bug, or is that the way it's going to be? I heard something about Ubuntu getting rid of that feature entirely. Is there a way to add it back? I mean, I didn't really like it, either, especially when there were apps that used it unnecessarily, but I can't use CryptKeeper at all now, or easycrypt, and I don't know whether Dropbox has synced without opening Nautilus.

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• Usefulness of the Backlinks shown in Webmaster Tools

  - by Ewan Heming

  Is the list of links for a site shown in Google Webmaster Tools a complete list or just a sample? I've noticed that the links in there appear to be all the ones I didn't think would have any real value - either because they were nofollow or from irrelivant sites. The few I did think would be some use have never shown up and there's also some links that are sometimes there and sometimes not (such as my linkedIn profile). Does this mean that the missing links don't/no longer carry any value? It almost appears that the list is there for Google to either inform you about problems (there was a useful list there when someone tried to SPAM my site) or mis-imform you about which link-building strategies work or not (to keep people guessing about what works or not).

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• How to make/use launcher?

  - by prosseek

  In ubuntu, I can run firefox with the command firefox in Terminal, or click the button in dock or panel. How does this possible with ubuntu? I googled to find the name launcher, but I don't know exactly how does it work. Q1 : How to make launcher? If I make a GUI program, does that mean that I need to create launcher to start by clicking it? Q2 : Can I make a launcher for whatever program, even if it's not a GUI program? Q3 : How to link a launcher? How can make a link to a launcher in a Desktop to start a program? Q4 : The idea of launcher is unique to ubuntu? Or if I have one launcher, can I use it for other distributions? Q5 : Why some of the program pops up its icon in Docky (firefox for example), but some of the program doesn't (p4v for example) ?

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