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• What is the path to JavaScript mastery?

  - by Eric Wilson

  I know how we start with JavaScript, we cut-and-paste a snippit to gain a little client-side functionality or validation. But if you follow this path in trying to implement rich interactive behavior, it doesn't take long before you realize that you are creating a Big Ball Of Mud. So what is the path towards expertise in programming the interaction layer? What books, tutorials, exercises, and processes contribute towards the ability to program robust, maintainable JavaScript? We all know that practice is important in any endeavor, but I'm looking for a path similar to the answer here: http://stackoverflow.com/questions/2573135/

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• Where do I look to investigate how guided partitioning in the Ubuntu Server 12.04 installer works?

  - by Kent

  I would like to know how the installer, and in particular the guided partitioning for Ubuntu Server 12.04 works under the hood. I'm not interested in documentation, I want to check out the real scripts and the logic in them. How do you recommend I dig into this? Where on the ISO are these parts located? I don't know what the installer for Ubuntu is called, or how it is configured. I am well versed in programming languages and command line GNU/Linux.

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• Slides for Parallel Debugging windows

  Recently I gave a talk at our Microsoft Shanghai offices on Parallel Programming so I had to update my existing Beta1 deck to Beta2 content. Specifically for Parallel Tasks and Parallel Stacks, I used 5 slides to accompany the demo.In case you are giving talks on parallelism within Visual Studio 2010, please feel free to download and use the updated parallel debugger slides (pptx).TIP: The slides have animations so be sure to F5 the deck for the full benefit and they also have text in the Comments section so be sure to see them at design time too. Comments about this post welcome at the original blog.

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• How much does it cost to develop an Android application?

  - by raychenon

  Following the same iPhone question. How much can a development team charge for an Android app like the official Twitter Inc ? In general how much amount of time is devoted to build the likes of Google Goggles , Google Skymap, Gmail with server side applications included :) Now if you're a solo developer and proud to show your app. How much time have you spent so far ? What was your background GUI desktop in Java, C#, web developer, started from zero programming experience ? Disclaimer : I've developed Android apps ( 10 000 downloads) on my free time and one commercial to be published. Just to know the amount of efforts needed to catch up :)

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• Is PPC effective marketing Web Design & Development Services

  - by Pennf0lio

  Have anyone tried to do a PPC campaign on services like, Web Design Web Development Graphic Design Logo Design Programming as an individual and not a company? I've seen companies advertise web services, one popular i've seen is PSD2HTML. But I was if it is also applicable to individuals trying to market it self. If its applicable to, can you give some example how it is being maximize. Thank You! edit: I'd like to know if PPC campaign is effective on services mentioned above as an individual and not a company.

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• Learning C, Lisp, and UNIX from Ground Up

  - by hunterc

  A friend and I are trying to learn traditional programming from the ground up. We both do web stuff primarily but want to expand to more system related things. We have found a ton of resources but looking for a road map of sorts. We are planning on using SICP to learn Lisp(scheme). Don't really know where to from there. As for C, we figured we'd start with K&R, then do OOC, and sprinkle in Operating Systems Design and Implementation and kind of learn UNIX as we go. I'd really appreciate suggestions on filling in the gaps, reordering things, or just advice in general.

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• Should actors in a game be responsible for drawing themselves?

  - by alex

  I am very new to game development, but not to programming. I am (again) playing around with a Pong type game using JavaScript's canvas element. I have created a Paddle object which has the following properties... width height x y colour I also have a Pong object which has properties such as... width height backgroundColour draw(). The draw() method currently is resetting the canvas and that is where a question came up. Should the Paddle object have a draw() method responsible for its drawing, or should the draw() of the Pong object be responsible for drawing its actors (I assume that is the correct term, please correct me if I'm incorrect). I figured that it would be advantagous for the Paddle to draw itself, as I instantiate two objects, Player and Enemy. If it were not in the Pong's draw(), I'd need to write similar code twice. What is the best practice here? Thanks.

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• Good ergonomic keyboards for ruby/rails programmer using vim (on Mac) [closed]

  - by Brand

  I'm looking to buy an ergonomic keyboard but I'm unable to find answers for my specific needs. I'm a programmer so I need to be able to have quick/easy access to my curly brace and bracket keys. I use vim extensively so having the ctrl and esc keys in a easier to reach location would help. I'm also a mac user (doing ruby/rails dev). With all these things in mind, what are some good options for ergonomic keyboards? I'm afraid someone will see this as "off topic" but please realize I need to ask fellow programmers. For example, I was thinking of the Kinesis Keyboard but read some reviews saying it's not good for programming. That's when I realized other programmers would be the best at answering this question.

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• Backtrack My "Education"

  - by perl.j

  About a year or so ago, I decided to start programming. I really, just jumped into a language (Perl) and went from there. What I regret is that I just jumped in: I didn't learn the basics (if you would call them basics). I didn't learn about Computer Science. This issue, I believe, is holding me back. Where should I "restart"? Are there any books, articles, etc. that I should read? Are there any topics an experienced programmer should know? What's your advice? Thanks! Please don't advise me to take a college/high-school class.

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• What are best practices for testing programs with stochastic behavior?

  - by John Doucette

  Doing R&D work, I often find myself writing programs that have some large degree of randomness in their behavior. For example, when I work in Genetic Programming, I often write programs that generate and execute arbitrary random source code. A problem with testing such code is that bugs are often intermittent and can be very hard to reproduce. This goes beyond just setting a random seed to the same value and starting execution over. For instance, code might read a message from the kernal ring buffer, and then make conditional jumps on the message contents. Naturally, the ring buffer's state will have changed when one later attempts to reproduce the issue. Even though this behavior is a feature it can trigger other code in unexpected ways, and thus often reveals bugs that unit tests (or human testers) don't find. Are there established best practices for testing systems of this sort? If so, some references would be very helpful. If not, any other suggestions are welcome!

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• Graphic demonstrating emphasis of front end in web apps

  - by sohail

  I remember stumbling across an amusing graphic a year or so ago which demonstrated the tiers of web development. The back-end was shown as a tiny box, but the front end was shown as a huge box crammed with lots of front-end technologies like AJAX, DHTML. This is all a vague recollection. Does anyone know where on the Intraweb this graphic might be? It was probably on a programming cartoon site, but I only view XKCD on a regular basis, and I couldn't find it on there. Although tagged as fun, my request does have a productive edge to it - it would be quite useful in driving home to my colleagues how UI top-heavy web application development has become.

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• Determining Whether a String Is Contained Within a String Array (Case Insensitive)

  About once every couple of months I need to write a bit of code that does one thing if a particular string is found within an array of strings and something else if it is not ignoring differences in case. For whatever reason, I never seem to remember the code snippet to accomplish this, so after spending 10 minutes of research today I thought I'd write it down here in an effort to help commit it to memory or, at the very least, serve as a quick place to find the answer when the need arises again.So without further adieu, here it is:Visual Basic Version:If stringArrayName.Contains("valueToLookFor", StringComparer.OrdinalIgnoreCase) Then ... Else ... End IfC# Version:if (stringArrayName.Contains("valueToLookFor", StringComparer.OrdinalIgnoreCase)) ... else ...Without the StringComparer.OrdinalIgnoreCase the search will be case-sensitive. For more information on comparing strings, see: New Recommendations for Using Strings in Microsoft .NET 2.0.Happy Programming!Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• I Need a recommendation for a CMS application with ECommerce

  - by Griff

  Does anyone have any recommendation for an open source solution for a robust CMS application that has a fully featured ECommerce module? I have been looking into Drupal with Ubercart -- but it looks like Ubercart is not fully up to speed with Drupal 7, and the other modules for Ecommerce don't look as robust. The CMS system should support CMIS as both client and server, and be able to run in a cloud computing environment. The system could be written in any standard web programming language, although Java would be my preference. I'm posting this question here because it seems that all CMS systems provide ECommerce as an afterthought, rather than a core feature.

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• How to program something with the expectation that it will work the first time?

  - by Peter Turner

  I had a friend in college who programmed something that worked the first time, that was pretty amazing. But as for me, I just fire up the debugger as soon as I finally get whatever I'm working on to compile - saves me time (kidding of course, I sometimes hold out a little bit of hope or use a lot of premeditated debug strings). What's the best way to approach the Dijkstrain ideal for our programs? -or- Is this just some sort of pie-in-the-sky old fools quest for greatness applicable only to finite tasks that no one should hope for in our professional lives because programming is just too complex?

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• Shouldn't we count characters of code and comments instead of lines of code and comments? [closed]

  - by Gabriel

  Counting lines of code and comments is sometimes bogus, since most of what we write may be written in one or more lines, depending column count limitations, screen size, style and so forth. Since the commonly used languages (say C, C++, C# and Java) are free-form, wouldn't it be more clever to count characters instead? Edit: I'm not considering LOC-oriented programming where coders try to artificially match requirements by adding irrelevant comments or using multiple lines where less would be enough (or the opposite). I'm interested in better metrics that would be independent of coding style, to be used by honest programmers.

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• How to identify potential for becoming a programmer

  - by Jacob Spire

  There's heaps of information out there on hiring someone who's already a programmer. (Or claims to be one.) But what about identifying someone who has the potential to become a programmer, with little or no knowledge? Aside from the obvious things to look for (smart, gets things done), are there any interview questions and/or tests to determine whether one has the potential to become a programmer? Note: I'm not asking how to tell whether I can learn programming, but how to tell someone else is right for it.

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• String Formatting with concatenation or substitution

  - by Davio

  This is a question about preferences. Assume a programming language offers these two options to make a string with some variables: "Hello, my name is ". name ." and I'm ". age ." years old." StringFormat("Hello, my name is $0 and I'm $1 years old.", name, age) Which do you prefer and why? I have found myself using both without any clear reason to pick either. Considering micro-optimizations is not within the scope of this question. Localization has been mentioned as a reason to go with option #2 and I think it's a very valid reason and deserves to be mentioned here. However, would opinions differ based on aesthetic viewpoints?

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• Website Stopped Showing From Google Search Results Sunddenly

  - by Aman Virk

  I have a design and development blog http://www.thetutlage.com (1.5 years old), which was doing really well in Google search as I was getting over 70% of my traffic from Google. Now suddenly from last two days it reduced the amount of traffic from 70% to 20% and also when I am trying to search for the exact posts that I can created even after appending my website name to it does not show any results for that. Sample Search Text: JQuery Game Programming Creating A Ping Pong Game Part 1 I have post with exact same title and it does not show it on Google search anywhere. I am totally shocked, I write my own unique content and follow Google guide lines like bible. Also there is no message under my webmasters account stating any problem or error.

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• "A good programmer can be as 10+ times more productive as a mediocre one"

  - by m3th0dman

  I had read an interview with a great programmer (it is not in English) and in it he said that "a great programmer can be as 100 times as good as a mediocre one" giving reason for why good programmers are very well paid and why programming companies give many facilities for their employees. The idea was that there is a very large demand for good programmers, because of the above reason and that's why companies pay very much to bring them. Do you agree with this statement? Do you know any objective facts that could support it? Edit: The question has nothing to do with experience; if you talk about one great programmer with 1 year experience then s/he should be 10 times more productive than a mediocre programmer with 1 year experience. I agree that from certain experience years onwards, things start to dissipate but that's not the purpose of the question.

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• R Statistical Analytics with Faster Performance for Enterprise Database Access and Big Data

  - by Mike.Hallett(at)Oracle-BI&EPM

  Further demonstrating commitment to the open source community, Oracle has just released enhanced support of the R statistical programming language for Oracle Solaris and AIX in addition to Linux and Windows, connectivity to Oracle TimesTen In-Memory Database in addition to Oracle Database, and integration of hardware-specific Math libraries for faster performance.  Oracle’s Open Source distribution of R is available with the Oracle Big Data Appliance and available for download now. Oracle also offers Oracle R Enterprise, a component of Oracle Advanced Analytics that enables R processing on Oracle Database servers.   This all goes to make big data analytics more accessible in the enterprise and improving data scientist productivity with faster performance Since its introduction in 1995, R has attracted more than two million users and is widely used today for developing statistical applications that analyze big data. Analyst Report: Oracle Advances its Advanced Analytics Strategy  

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• Application won't run when installed in "/opt"

  - by Sam Hewitt

  I've developed a program for the App Developer Showdown, with quickly, in python, and it works as expected when I package and install it normally -in /usr. However when packaged for installation in /opt it doesn't run -and I'm not getting (or can't find) an error message of any sort, as to what the problem might be. I was wondering if someone here has the answer. The app does require root access -using gksudo- to function. I'm fairly new to programming, but not to Linux. Thanks, Sam Launchpad: https://launchpad.net/aplomb

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• Are developers expected to have skills of business analysts?

  - by T. Webster

  Our business analyst has left the team. We are now expected to do the work which was previously done by the business analyst, and the management thinks that a task which is done in three months by a business analyst can be done in one month by a developer. My experience is in programming only, and I'm not familiar to the business intelligence tools. To me this seems like maybe an unfair comparison or expectation, and might even trivialize the role of a business analyst. Has anyone else encountered this situation? How to deal with it?

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• Plan variable and call dependencies

  - by Gerenuk

  I'd like to write down the design of my program to understand the dependencies and calls better. I know there are class diagrams which show inheritance and attribute variables. However I'd also like to document the input parameters to method functions and in particular which calls the methods function executes inside (e.g. on the input parameters). Also sometimes it might be useful to show how actual objects are connected (if there is a standard structure). This way I can have a better understanding of the modules and design before starting to program. Can you suggest a method to do this software design? It should be one-to-one to programming code structure so that I really notice all quirks beforehand (instead of high-level design where thing are hard to implement without further work). Maybe some special diagram or tool or a combination? It is static dependency and call design rather than time dependent execution monitoring. (I use Python if you have any specialized recommendations).

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• Do reactive extensions and ETL go together?

  - by Aaron Anodide

  I don't fully understand reactive extensions, but my inital reading caused me think about the ETL code I have. Right now its basically a workflow to to perform various operations in a certain sequence based on conditions it find as it progresses. I can also imagine an event driven way such that only a small amount of imperative logic causes a chain reaction to occur. Of course I don't need a new type of programming model to make an event driven collaboration like that. Just the same I am wondering if ETL is a good fit for potentially exploring Rx further. Is my connection in a valid direction even? If not, could you briefly correct the error in my logic?

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• converting 2d grid of squares to polygon nav mesh

  - by Roflha

  I haven't actually started programming for this one yet, but I wanted to see how I would go about doing this anyway. Say I have a 2D matrix of squares, all of the same size, some traversable and some not. How would I go about creating a navigation mesh of polygons from this grid. Is there any reading I can look at until I get a chance to get to my computer or should I just give it a go. My idea was to take the non-traversable squares out and extend lines from there edges to make polygons.. that's all I have got so far. Any advice?

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