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• Teaching logical/analytical thinking

  - by Joshua

  I have been trial running a club in which I teach programming for the past year and while they have progressed what they really lack is the most fundamental concept to programming, analytical thinking. As I now approach the second year of teaching to the children (aged 12 - 14) I am now realising that before I begin teaching them the syntax and how to actually program an app (or what they would rather, a game) I need to introduce them to analytical thinking first. I have already found Scratch and similar things such as Light-Bot and will most certainly be using the, to teach them how to implement their logical thinking but what I really need are some tips or articles on how to teach analytical thinking itself to children aged 12 - 14. What I'm looking for are some ideas on how to teach the kind of thinking that these kids will need in order to get them into programming, whether that be analytical, logical or critical. How and what should I teach them relating to the way their minds need to be wired when programming solutions to problems?

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• Environment naming standards in software development?

  - by Marcus_33

  My project is currently suffering from environment naming issues. Different people have different assumptions as to what environments should be named or what the names designate, and it's causing confusion when discussing them. I've done a bit of research and I haven't found any standards out there. The terms include "Local", "Sand", "Dev", "Test", "User", "QA", "Staging" and "Prod" (plus a few more that different people have asked about) I'm not looking for just opinions, though if there's one out there that "everyone" has I'll take it - I'm trying to find definitions advanced by some sort of authority, even if it's unofficial. Here's the environments we currently use: Environment on the developer's PC Shared Environment where developers directly upload code to self-test Shared Environment where standards and functionality are tested by QA people Shared Environment where completed and QA-checked code is approved by project requesters Environment that mirrors the final environment as a final check and to prepare for deployment Final Environment where code is in use I know what I'd call them, but is there some sort of standard on this? Thanks in advance.

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• Linux Learning curve for a 'Lifetime' windows user [closed]

  - by gary

  I am using windows for almost 8-10 years and have never worked on linux. Mostly i used to work in VB, VC++ MFC and little bit of .NET(C# and VB) so i didn't bother about Linux. But now when i got an opportunity to work with linux i dont want to miss it, here are my questions : Where can i find useful resources for Linux newbies? Which books/Tutorials will you suggest to start? Which distro shall i use? What was your experience while moving from Windows to Linux?

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• Understanding hand written lexers

  - by Cole Johnson

  I am going to make a compiler for C (C99; I own the standards PDF), written in C (go figure) and looking up on how compilers work on Wikipedia has told me a lot. However, after reading up on lexers has confused me. The Wikipedia page states that: the GNU Compiler Collection (gcc) uses hand-written lexers I have tried googling what a hand written lexer and have come up with nothing except for "making a flowchart that describes how it should function", however, isn't that how all software development should be done? So my question is: "What is a hand written lexer?"

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• Apache Commons PropertiesConfiguration escapes characters on Save [migrated]

  - by Anuvrat

  I am using the commons-configuration from apache commons library. I have a properties file which has properties like: blog_loc=http://my.blog.com blog_name="my blog name" I open the properties file, change the blog_name property and save the file. The following are the lines of code I use: PropertiesConfiguration propertyFile = new PropertiesConfiguration(propertyFileName); propertyFile.setProperty(blog_name, "blog name"); propertyFile.save(propertyFileName + ".out"); Unfortunately, in the output file certain characters get escaped as follows: blog_loc=http:\/\/my.blog.com blog_name=\"blog name\" Is there any way of preventing escaping of the above characters?

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• When should a method of a class return the same instance after modifying itself?

  - by modiX

  I have a class that has three methods A(), B() and C(). Those methods modify the own instance. While the methods have to return an instance when the instance is a separate copy (just as Clone()), I got a free choice to return void or the same instance (return this;) when modifying the same instance in the method and not returning any other value. When deciding for returning the same modified instance, I can do neat method chains like obj.A().B().C();. Would this be the only reason for doing so? Is it even okay to modify the own instance and return it, too? Or should it only return a copy and leave the original object as before? Because when returning the same modified instance the user would maybe admit the returned value is a copy, otherwise it would not be returned? If it's okay, what's the best way to clarify such things on the method?

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• How can I avoid team burnout?

  - by Shawn Dalma

  I work for a small web company that deals with a lot of projects, a few at any given time are development heavy for us (400-1500 hours or more) and I've been noticing developers get extremely burnt out on a project after 150 hours or so. I've been toying around with the idea of working some form of rotation/rest so when someone reaches the threshold, they at least get some time off of working on that project. Is there an industry standard approach?

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• Is there a LOGO interpreter that actually has a turtle?

  - by Tim Post

  This is not a repeat of the now infamous "How do I move the turtle in LOGO?" Recently, I had the following conversation with my five year old daughter: Daughter: Daddy, do you write programs? Me: Yes! Daughter: Daddy, what's a program? Me: A program is a set of instructions that a computer follows. Daughter: Daddy, can I write a program too? Me: Sure! This got me scrambling to think of a very basic language that a five year old could get some satisfaction from mastering rather quickly. I'm ashamed to admit that the first thing that came to mind was this: 10 INPUT "Tell me a secret" A$ 20 PRINT "Wow really? :" A$ 30 GOTO 10 That isn't going to hold a five year old's attention for very long and it requires too much of a lecture. However, moving a turtle around and drawing neat pictures might just work. Sadly, my search for a LOGO interpreter yielded noting but ad ridden sites, flight simulators and a whole bunch of other stuff that I really don't want. I'm hoping to find a cross platform (Java / Python) LOGO interpreter (dare I call it simulator?) with the following features: Can save / replay commands (stored programs) Has an actual turtle Sound effects are a plus Have you stumbled across something like this, if so, can you provide a link? I hate to ask a 'shopping' sort of question, but it seemed much better than "Is LOGO appropriate for a five year old?"

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• How to protect a peer-to-peer network from inappropriate content?

  - by Mike

  I’m developing a simple peer-to-peer app in .Net which should enable users to share specific content (text and picture files). As I've learned with my last question, inappropriate content can “relatively” easily be identified / controlled in a centralized environment. But what about a peer-to-peer network, what are the best methods to protect a decentralized system from unwanted (illegal) content? At the moment I only see the following two methods: A protocol (a set of rules) defines what kind of data (e.g. only .txt and jpg-files, not bigger than 20KB etc.) can be shared over the p2p-network and all clients (peers) must implement this protocol. If a peer doesn’t, it gets blocked by other peers. Pro: easy to implement. Con: It’s not possible to define the perfect protocol (I think eMail-Spam filters have the same problem) Some kind of rating/reputation system must be implemented (similar to stackoverflow), so “bad guys” and inappropriate content can be identified / blocked by other users. Pro: Would be very accurate. Con: Would be slow and in my view technically very hard to implement. Are there other/better solutions? Any answer or comment is highly appreciated.

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• What are the most commonly used enterprise Java technologies, and what would you want a non technical audience to understand about them?

  - by overstood

  I have been asked to give a presentation to a non-technical audience on what Java technologies are currently being used in the enterprise world. The goal is to give this non-technical audience the background they need to understand what engineers are talking about. It's part of a broader series of talks that I'm giving. I'm primarily a .NET and C++ dev, so I thought I'd try to get some input from some Java devs. What technologies do you use? What Java related acronyms would you like to be able to use around non-coders? What would you like non-coders to understand about them?

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• Unit-Testing functions which have parameters of classes where source code is not accessible

  - by McMannus

  Relating to this question, I have another question regarding unit testing functions in the utility classes: Assume you have function signatures like this: public function void doSomething(InternalClass obj, InternalElement element) where InternalClass and InternalElement are both Classes which source code are not available, because they are hidden in the API. Additionally, doSomething only operates on obj and element. I thought about mocking those classes away but this option is not possible due to the fact that they do not implement an interface at all which I could use for my Mocking classes. However, I need to fill obj with defined data to test doSomething. How can this problem be solved?

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• Content Locking network with Microsoft Web Development tools? [closed]

  - by Jose Garcia

  I want my team to develop a content locking network for a client. But we dont know what is need to devlop such a network. We need to code it from Scratch. Please give us some advice. Content locking networks http://www.blamads.com/ adworkmedia.com These two networks are made with MS Tools it seems. FAQ http://support.blamads.com/index.php?pg=kb.book&id=5 https://www.adworkmedia.com/cpa-network-features.php

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• The C++ web stack, is there one?

  - by NimChimpsky

  Java would be jsps and servlets (or a framework such as Spring) running on the JVM and tomcat (or glassfish etc). C# would be asp and C# running on dot.net framework and IIS ? (I have no experience with this please correct and improve my terminology) Is there an equivalent for C++ ? I could happily call some C++ from a java servlet/controller but was wondering if there are existing frameworks and libraries out there specifically for creating business logic in C++ with a web front end.

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• How should I pitch moving to an agile/iterative development cycle with mandated 3-week deployments?

  - by Wayne M

  I'm part of a small team of four, and I'm the unofficial team lead (I'm lead in all but title, basically). We've largely been a "cowboy" environment, with no architecture or structure and everyone doing their own thing. Previously, our production deployments would be every few months without being on a set schedule, as things were added/removed to the task list of each developer. Recently, our CIO (semi-technical but not really a programmer) decided we will do deployments every three weeks; because of this I instantly thought that adopting an iterative development process (not necessarily full-blown Agile/XP, which would be a huge thing to convince everyone else to do) would go a long way towards helping manage expectations properly so there isn't this far-fetched idea that any new feature will be done in three weeks. IMO the biggest hurdle is that we don't have ANY kind of development approach in place right now (among other things like no CI or automated tests whatsoever). We don't even use Waterfall, we use "Tell Developer X to do a task, expect him to do everything and get it done". Are there any pointers that would help me start to ease us towards an iterative approach and A) Get the other developers on board with it and B) Get management to understand how iterative works? So far my idea involves trying to set up a CI server and get our build process automated (it takes about 10-20 minutes right now to simply build the application to put it on our development server), since pushing tests and/or TDD will be met with a LOT of resistance at this point, and constantly force us to break larger projects into smaller chunks that could be done iteratively in a three-week cycle; my only concern is that, unless I'm misunderstanding, an agile/iterative process may or may not release the software (depending on the project scope you might have "working" software after three weeks, but there isn't enough of it that works to let users make use of it), while I think the expectation here from management is that there will always be something "ready to go" in three weeks, and that disconnect could cause problems. On that note, is there any literature or references that explains the agile/iterative approach from a business standpoint? Everything I've seen only focuses on the developers, how to do it, but nothing seems to describe it from the perspective of actually getting the buy-in from the businesspeople.

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• Did the developers of Java conciously abandon RAII?

  - by JoelFan

  As a long-time C# programmer, I have recently come to learn more about the advantages of Resource Acquisition Is Initialization (RAII). In particular, I have discovered that the C# idiom: using (my dbConn = new DbConnection(connStr) { // do stuff with dbConn } has the C++ equivalent: { DbConnection dbConn(connStr); // do stuff with dbConn } meaning that remembering to enclose the use of resources like DbConnection in a using block is unnecessary in C++ ! This seems to a major advantage of C++. This is even more convincing when you consider a class that has an instance member of type DbConnection, for example class Foo { DbConnection dbConn; // ... } In C# I would need to have Foo implement IDisposable as such: class Foo : IDisposable { DbConnection dbConn; public void Dispose() { dbConn.Dispose(); } } and what's worse, every user of Foo would need to remember to enclose Foo in a using block, like: using (var foo = new Foo()) { // do stuff with "foo" } Now looking at C# and its Java roots I am wondering... did the developers of Java fully appreciate what they were giving up when they abandoned the stack in favor of the heap, thus abandoning RAII? (Similarly, did Stroustrup fully appreciate the significance of RAII?)

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• Syntactic sugar in PHP with static functions

  - by Anna

  The dilemma I'm facing is: should I use static classes for the components of an application just to get nicer looking API? Example - the "normal" way: // example component class Cache{ abstract function get($k); abstract function set($k, $v); } class APCCache extends Cache{ ... } class application{ function __construct() $this->cache = new APCCache(); } function whatever(){ $this->cache->add('blabla'); print $this->cache->get('blablabla'); } } Notice how ugly is this->cache->.... But it gets waay uglier when you try to make the application extensible trough plugins, because then you have to pass the application instance to its plugins, and you get $this->application->cache->... With static functions: interface CacheAdapter{ abstract function get($k); abstract function set($k, $v); } class Cache{ public static $ad; public function setAdapter(CacheAdapter $a){ static::$ad = $ad; } public static function get($k){ return static::$ad->get($k); } ... } class APCCache implements CacheAdapter{ ... } class application{ function __construct(){ cache::setAdapter(new APCCache); } function whatever() cache::add('blabla', 5); print cache::get('blabla'); } } Here it looks nicer because you just call cache::get() everywhere. The disadvantage is that I loose the possibility to extend this class easily. But I've added a setAdapter method to make the class extensible to some point. I'm relying on the fact that I won't need to rewrite to replace the cache wrapper, ever, and that I won't need to run multiple application instances simultaneously (it's basically a site - and nobody works with two sites at the same time) So, am doing it wrong?

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• Eclipse vs. Aptana

  - by RPK

  I know that Eclipse is a universal IDE and variety of plugins are available to scale it. What is the difference between: The original Eclipse IDE, Aptana and NetBeans. I looked into Wikipedia and came to know that the latter two originate from the main Eclipse. For Aptana specially, what was the need to reproduce a new variant that resembles too much with its base IDE? If your preferred choice is Eclipse itself, what makes it unique as compared to the other two.

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• IL and case-sensitivity

  - by Ali .NET

  Quoted from A Brief Introduction To IL code, CLR, CTS, CLS and JIT In .NET CLS stands for Common Language Specifications. It is a subset of CTS. CLS is a set of rules or guidelines which if followed ensures that code written in one .NET language can be used by another .NET language. For example one rule is that we cannot have member functions with same name with case difference only i.e we should not have add() and Add(). This may work in C# because it is case-sensitive but if try to use that C# code in VB.NET, it is not possible because VB.NET is not case-sensitive. Based on above text I want to confirm two points here: Does the case-sensitivity of IL is a condition for member functions only, and not for member properties? Is it true that C# wouldn't be inter-operable with VB.NET if it didn't take care of the case sensitivity?

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• Salaries in reverse engineering fields [closed]

  - by John

  I bumped into an old friend at a conference and he told me he was now a consultant doing reverse engineering. I don't have much knowledge of this particular area, but this person (that I can't manage to get in touch with now) just casually mentioned that he was earning big bucks. I was hoping someone at SO may know of the salary range that a skilled and experienced employee/freelancer may earn in this area? I can't find much information on the web - small area maybe? I dunno. Any help would be appreciated.

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• How to have an improved relationship with recruiters?

  - by crosenblum

  I personally, always have problems with recruiter's and their constant spam.. I usually get tons of emails for jobs, not related to what I do. Or they have no idea what I do. Or they say they have a job in my field, but make me go thru hours of paperwork, only to find out they had no real job lead. Or my resume contained a keyword, that they searched for, but that keyword is like 1-10% of what I do, not my main job skill set. My point being is that I want to have a more polite, more accurate, less waste of each other's time. So I want to come up with a form letter, I can create in gmail to automatically send to all recruiter's, to help inform, educate and train them to deal better with me. That way, they know exactly what to send to me, so as to not waste my time. We don't play email/phone tag, just to find out they have no idea what I do, or how to find a job lead that matches that. I want this to be an improvement in my relationship and experience with recruiters, because honestly most of them waste my time. They call me at work, not considering I can't take phone call's at work, and they already had my email address. Mostly they annoy me, but I am tired of having to be rude to get my point across. I want them to immediately make sure they know what I can and have done, (Have you read my resume?) and have actual leads ready to be hired/interviewed soon or now. Any suggestions to how to improve the communication, to avoid wasting each other's time. I certainly hate having to come across as rude or improper, but when they just waste so much of my time, I don't know what else to do. So thank you for your time. Just to be clear, I want your help to write a form letter, that I can send to every recruiter that email's me, how to best work with me, and other people in IT/Web careers.

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• Test case as a function or test case as a class

  - by GodMan

  I am having a design problem in test automation:- Requirements - Need to test different servers (using unix console and not GUI) through automation framework. Tests which I'm going to run - Unit, System, Integration Question: While designing a test case, I am thinking that a Test Case should be a part of a test suite (test suite is a class), just as we have in Python's pyunit framework. But, should we keep test cases as functions for a scalable automation framework or should be keep test cases as separate classes(each having their own setup, run and teardown methods) ? From automation perspective, Is the idea of having a test case as a class more scalable, maintainable or as a function?

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• Looking for some OO design advice

  - by Andrew Stephens

  I'm developing an app that will be used to open and close valves in an industrial environment, and was thinking of something simple like this:- public static void ValveController { public static void OpenValve(string valveName) { // Implementation to open the valve } public static void CloseValve(string valveName) { // Implementation to close the valve } } (The implementation would write a few bytes of data to the serial port to control the valve - an "address" derived from the valve name, and either a "1" or "0" to open or close the valve). Another dev asked whether we should instead create a separate class for each physical valve, of which there are dozens. I agree it would be nicer to write code like PlasmaValve.Open() rather than ValveController.OpenValve("plasma"), but is this overkill? Also, I was wondering how best to tackle the design with a couple of hypothetical future requirements in mind:- We are asked to support a new type of valve requiring different values to open and close it (not 0 and 1). We are asked to support a valve that can be set to any position from 0-100, rather than simply "open" or "closed". Normally I would use inheritance for this kind of thing, but I've recently started to get my head around "composition over inheritance" and wonder if there is a slicker solution to be had using composition?

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• Why was Objective-C popularity so sudden on TIOBE index?

  - by l46kok

  I'd like to ask a question that is pretty similar to the one being asked here, but for Objective-C. According to TIOBE rankings, the rise of popularity of Objective-C is unprecedented. This is obviously tied to the popularity of Apple products, but I feel like this might be a hasty conclusion to make since it doesn't really explain the stagnant growth of Java (1. There are way more Android O/S devices distributed worldwide, 2. Java is used in virtually every platform one can imagine) Now I haven't programmed in Objective-C at all, but I'd like to ask if there are any unique features or advantages about the language itself compared to other prevalent languages such as C++, Java, C#, Python etc. What are some other factors that contributed into the rise of Objective-C in this short span of time?

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• Programming knowledge vs. programming logic

  - by Shirish11

  Is there any difference between the two topics? I have seen companies asking for Good Programming knowledge some Good Programming logic. I believe that Programming knowledge is related to knowledge about the language in consideration and Programming logic is problem solving logic using programming (in general). Please correct me if I am wrong. Also what is more important. Edit: Do selection of components for application, designing interfaces validating user inputs fall under programming knowledge or Programming logic? Does programming logic simply imply problem solving, or is there anything else which it should comprise of?

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• signal processing libraries

  - by khinester

  Are there any open source libraries/projects which work in a similar way to http://www.tagattitude.fr/en/products/technology? I am trying to understand the process. At first I thought this could work like when you send a fax to a fax machine. It is basically using the mobile phone’s microphone as a captor and its audio channel as a transporter. Are there any libraries for generating the signal and then being able to decode it?

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