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• What is the difference between these senior software engineer titles?

  - by stackoverflowuser2010

  I'm currently a senior research software engineer at a large company and am being offered a "senior staff engineer" position somewhere else. I am not sure if the new position's title conveys a sideways move or an advancement. So, all other things being roughly equal (salary, domain of expertise, etc.), what is the external difference between these software engineer titles (in general and regardless of any particular company, if possible): senior engineer senior research engineer senior staff engineer member of technical staff principal engineer Edit: Let me elaborate on "member of technical staff" since it's kind of uncommon. I think it's a high title, commonly associated with research. I know that Oracle, VMWare, and the old Bell Labs have these titles. See: Member of Technical Staff . I know what it means, but I don't know how it stacks up against the other titles, which is why I asked.

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• How do you manage a complexity jump?

  - by glenatron

  It seems an infrequent but common experience that sometimes you're working on a project and suddenly something turns up unexpectedly, throws a massive spanner in the works and ramps up the complexity a whole lot. For example, I was working on an application that talked to SOAP services on various other machines. I whipped up a prototype that worked fine, then went on to develop a regular front end and generally get everything up and running in a nice, fairly simple and easy to follow fashion. It worked great until we started testing across a wider network and suddenly pages started timing out as the latency of the connections and the time required to perform calculations on remote machines resulted in timed out requests to the soap services. It turned out that we needed to change the architecture to spin requests out onto their own threads and cache the returned data so it could be updated progressively in the background rather than performing calculations on a request by request basis. The details of that scenario are not too important - indeed it's not a great example as it was quite forseeable and people who have written a lot of apps of this type for this type of environment might have anticipated it - except that it illustrates a way that one can start with a simple premise and model and suddenly have an escalation of complexity well into the development of the project. What strategies do you have for dealing with these types of functional changes whose need arises - often as a result of environmental factors rather than specification change - later on in the development process or as a result of testing? How do you balance between avoiding the premature optimisation/ YAGNI/ overengineering risks of designing a solution that mitigates against possible but not necessarily probable issues as opposed to developing a simpler and easier solution that is likely to be as effective but doesn't incorporate preparedness for every possible eventuality?

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• Why is Conway's "Game of Life" used for code retreats?

  - by blunders

  Code Retreat is an all-day training event that focuses on the fundamentals of software development. There's a "global" code retreat day coming up, and I'm looking forward to it. That said, I've been to one before and have to say there was a huge amount of chaos... which is fine. One thing that I still don't get is why the "Game of Life" is a good problem for TDD, and what good and bad TDD for it feels like. Realize this is a pretty open ended question, so feel free to comment.

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• Naming methods that perform HTTP GET/POST calls?

  - by antonpug

  In the application I am currently working on, there are generally 3 types of HTTP calls: pure GETs pure POSTs (updating the model with new data) "GET" POSTs (posting down an object to get some data back, no updates to the model) In the integration service, generally we name methods that post "postSomething()", and methods that get, "getSomething()". So my question is, if we have a "GET" POST, should the method be called: getSomething - seeing as the purpose is to obtain data postSomething - since we are technically using POST performSomeAction - arbitrary name that's more relevant to the action What are everyone's thoughts?

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• How do I make a firefox extension execute script on page open/load? [migrated]

  - by Will Mc

  Thanks in advance! I am creating my first extension (A firefox extension). See below for full description of final product. I need help starting off. I have looked and studied the HelloWorld.xpi example found on Mozilla's site so I am happy to edit that to learn. In the example, when you click a menu item it runs script to display an alert message. My question is, how would I edit this extension to run the script on page load? I am guessing I need to insert some code in the browserOverlay as it loads on page load so, here is the browserOverlay.xpi from the example I am editing to learn: <?xml version="1.0"?> <?xml-stylesheet type="text/css" href="chrome://global/skin/" ?> <?xml-stylesheet type="text/css" href="chrome://xulschoolhello/skin/browserOverlay.css" ?> <!DOCTYPE overlay SYSTEM "chrome://xulschoolhello/locale/browserOverlay.dtd"> <overlay id="xulschoolhello-browser-overlay" xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"> <script type="application/x-javascript" src="chrome://xulschoolhello/content/browserOverlay.js" /> <stringbundleset id="stringbundleset"> <stringbundle id="xulschoolhello-string-bundle" src="chrome://xulschoolhello/locale/browserOverlay.properties" /> </stringbundleset> <menubar id="main-menubar"> <menu id="xulschoolhello-hello-menu" label="&xulschoolhello.hello.label;" accesskey="&xulschoolhello.helloMenu.accesskey;" insertafter="helpMenu"> <menupopup> <menuitem id="xulschoolhello-hello-menu-item" label="&xulschoolhello.hello.label;" accesskey="&xulschoolhello.helloItem.accesskey;" oncommand="XULSchoolChrome.BrowserOverlay.sayHello(event);" /> </menupopup> </menu> </menubar> <vbox id="appmenuSecondaryPane"> <menu id="xulschoolhello-hello-menu-2" label="&xulschoolhello.hello.label;" accesskey="&xulschoolhello.helloMenu.accesskey;" insertafter="appmenu_addons"> <menupopup> <menuitem id="xulschoolhello-hello-menu-item-2" label="&xulschoolhello.hello.label;" accesskey="&xulschoolhello.helloItem.accesskey;" oncommand="XULSchoolChrome.BrowserOverlay.sayHello(event);" /> </menupopup> </menu> </vbox> </overlay> I hope you can help me. I need to know what code I should use and where I should put it... Here is the gist of my overall extension - I am creating a click to call extension. This extension will search any new page for a phone number whether just refreshed, new page, new tab etc... Each phone number when clicked will open a new tab and direct user to a custom URL. Thanks again!

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• Business person turned into coder? How and why? Inspire the non-technical.

  - by huisjames

  I graduated with a Business degree. Two years later, I finally realized the power of programming - the power to "invent." I wish I realized this in high school. Nevertheless, I tried to self-teach C# but found it difficult. Then I pivoted to learn PHP two months ago and I have been able to build things I thought was beyond my abilities. Has anyone had the same experience? Or self-taught programming? What lessons did you learn?

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• Tips for a first year CS student looking for a summer internship to gain experience?

  - by Matt

  Hello all, I am a first year CS student and my programming experience is only what I have obtained in my computer programming I and II classes this school year. (console applications in C++) I want to find a summer job/internship that would help me build my skill set. Being that I am still such a beginner pay is not a concern, minimum wage would be nice, but as long as I am learning, I really don't care. My current resume just lists a bunch of random jobs i've had in the past (burger king, summer camps, best buy, etc.) Does anyone have any tips (places to look? things to put on resume?) that might help me?

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• git in non-distributed, independent, lone programming ...best practice(s) ?

  - by explorest

  I am currently studying the git documentation to get a hang of distributed version control workflow and use of git command line. I want to first start using git with small, personal, pet projects so to gain experience before doing it on large scale (i.e., bigger projects, team dev). What areas of the git system should I, as a lone player, devote most of my study time to... what parts should I leave for the larger scale work later on. In other words what features of the git system will fully be grasped in team work only, and therefore should not be too involved with at an individual level?

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• How does a "Variables introduce state"?

  - by kunj2aan

  I was reading the "C++ Coding Standards" and this line was there: Variables introduce state, and you should have to deal with as little state as possible, with lifetimes as short as possible. Doesn't anything that mutates eventually manipulate state? What does "you should have to deal with little state as possible" mean? In an impure language such as C++, isn't state management really what you are doing? And what are other ways to "deal with as little state as possible" other than limiting variable lifetime?

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• Why are software schedules so hard to define?

  - by 0A0D

  It seems that, in my experience, getting us engineers to accurately estimate and determine tasks to be completed is like pulling teeth. Rather than just giving a swag estimate of 2-3 weeks or 3-6 months... what is the simplest way to define software schedules so they are not so painful to define? For instance, customer A wants a feature by 02/01/2011. How do you schedule time to implement this feature knowing that other bug fixes may be needed along the way and take up additional engineering time?

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• What can procs and lambdas do that functions can't in ruby

  - by SecurityGate

  I've been working in Ruby for the last couple weeks, and I've come to the subject of procs, lambdas and blocks. After reading a fair share of examples from a variety of sources, I don't how they're much different from small, specialized functions. It's entirely possible that the examples I've read aren't showing the power behind procs and lambdas. def zero_function(x) x = x.to_s if x.length == 1 return x = "0" + x else return x end end zero_lambda = lambda {|x| x = x.to_s if x.length == 1 return x = "0" + x else return x end } zero_proc = Proc.new {|x| x = x.to_s if x.length == 1 puts x = "0" + x else puts x end } puts zero_function(4) puts zero_lambda.call(3) zero_proc.call(2) This function, proc, and lambda do the exact same thing, just slightly different. Is there any reason to choose one over another?

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• In the context of semantic versioning, does a change in the default configuration warrant a new major version?

  - by michielvoo

  My module is enabled by default (i.e. when you add the module). There's also a configuration you can optionally use, which supports an enabled="true|false" setting. This way the module can be disabled after it's been added, without the need to remove the module. But I realized the module doesn't play nicely with another module that is also enabled by default. I am considering changing my module so it's not be enabled by default. This would break for anyone that has not explicitly enabled it with the enabled="true" configuration setting. Should I wait for v2.0 for this? semver.org mentions the public API and breaking changes, not configuration. Is it generally accepted that configuration is part of the public API?

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• What makes for the ideal project? [closed]

  - by Hans Westerbeek

  I try to be careful when accepting assignments, to avoid mutual disappointment. So, I started to come up with a list of things that I consider ingredients for The Ideal Project: (in no particular order) What did I miss? What did I get wrong? Team size < 6 persons to avoid having too many meetings Team members must be dedicated to the project Gut-feeling-estimate (made by developers) of running period does not exceed 4 months. Projects longer than that tend to become open-ended, and are therefore not projects. Has a Product Owner who has mandate and is well-respected at their own company and who has a real interest in the long-term success of the project. Has no technical involvement from people that are not on the team. (yes that's you, Mr Architect That Doesn't Code) All the usual about quiet working conditions Exciting subject matter. Content management is just not as cool as controlling robots :)

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• from MS Biology to BS Computer Science [on hold]

  - by Air Borne

  I'm Marco from Italy and I'd like to ask you a piece of advice about my career. I hold a Ms degree in Biology, I enjoyed a lot studying it and I got very good grades but I didn't know what to do with my degree in the real life. Few months ago, I began to read a book about Python programming (Introduction to Computer Science, Zelle J.) and I've great fun learning Python as a beginner, I wake up in the morning thinking about doing excersies and writing simple programs with python :) I'm also watching free lectures from MIT open courseware, and I'm feeling a certain degree of regrets for never asking myself what was computer science, since it seems to me it's a magic world. After weeks of doubts, I made a move :) I applied for a CS bachelor degree abroad, I got an interview and I'm going to start this great adventure next September. I feel incredibly excited at it, but a little bit scared too. Scared because sometimes I think I'm making a great mistake for my life restarting from a bachelor in a completely different area of study. Sometimes I hear people saying the IT market is bad, sometimes I hear other ones saying quite the opposite instead. Moreover, some colleagues of mine suggested me to try to get into Bioinformatics, instead of CS. My question is: I want to really discover if CS is for me, I mean the passion of my life. I know I'm just a beginner and I can't say nothing about it yet. What do you suggest me: CS or Bioinformatics? If I get a Bs in CS, could I get into bioinformatics without relevant experience, taking into account I have a Ms Biology degree? Any comment is appreciated, thanks in advance.

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• How come verification does not include actual testing?

  - by user970696

  Having read a lot about this topic, I still did not get it. Verification should prove that you are building the product right, while validation you build the right product. But only static techniques are mentioned as being verification methods (code reviews, requirements checks...). But how can you say if its implemented correctly if you do not test it? It is said that verification checks e.g. code for its correctnes. Verification - ensure that the product meet specified requirements. Again, if the function is specified to work somehow, only by testing I can say that it does. Could anyone explain this to me please? EDIT: As Wiki says: Verification:Preparing of the test cases (based on the analysis of the requireemnts) Validation: Running of the test cases

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• Teaching OO to VBA developers [closed]

  - by Eugene

  I work with several developers that come from less object oriented background like (VB6, VBA) and are mostly self-taught. As part of moving away from those technologies we recently we started having weekly workshops to go over the features of C#.NET and OO practices and design principles. After a couple of weeks of basic introduction I noticed that they had a lot of problems implementing even basic code. For instance it took probably 15 minutes to implement a Stack.push() and a full hour to implement a simple Stack fully. These developers were trying to do things like passing top index as a parameter to the method, not creating an private array, using variables out of scope. But most of all not going through the "design (dia/mono)log" (I need something to do X, so maybe I'll make an array, or put it here). I am a little confused because they are smart people and are able to produce functional code in their traditional environments. I'm curious if anybody else has encountered a similar thing and if there are any particular resources, exercises, books, ideas that would be helpful in this circumstance.

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• session management: verifying a user's log-in state

  - by good_computer

  I am storing sessions in my database. Everytime a user logs in, I create a new row corresponding to the new session, generate a new session id and send it as a cookie to the browser. My session data looks something like this: { 'user_id': 1234 'user_name': 'Sam' ... } When a request comes, I check whether a cookie with a session id is sent. If it is, I fetch session data from my database (or memcache) corresponding to that session id. When the user logs out, I remove the session data from my database (and memcache), and delete the cookie from the user's browser too. Notice that in my session data, I don't have something like logged_in: true. This is because if I find a session record in the database (or memcache) I deduce that the user is logged in, and if there is no session record found, the user is not logged in. My question is: is this the right approach? Should I have a logged_in key in my session data? Is there any possibility that a session record may be present on the server where the corresponding user is actually NOT logged in? Are there any security implications in having or not having such a key?

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• Agile project management, agile development: early integration

  - by Matías Fidemraizer

  I believe that agile works if everything is agile. In software development area, in my opinion, if team members' code is integrated early, code will be more in sync and this has a lot of pros: Early integration helps team members to avoid painful merges. Encourages better coding habits, because everyone makes sure that they don't break co-workers' code everyday. Both developers and architects (code reviewers) may detect bad design decisions or just wrong development directions in real-time, preventing useless work. Actually I'm talking about getting the latest version of code base and checking-in your own code to the source control in a daily basis. When you start your coding day (i.e. you arrive to your work), your first action is updating your code base with the latest version from the source control. In the other hand, when you're about an hour to leave from your work and go home, your last action is checking-in your code to the source control and be sure that your day work doesn't break the project's build process. Rather than updating and checking-in your code once you finished an entire task, I believe the best approach is fixing small and flexible personal milestones and checking-in the code once you finish one of these. I really believe that this coding approach fits better in the agile project management concept. Do you know some document, blog post, wiki, article or whatever that you can suggest me that could be in sync with my opinion?. And, do you find any problem working with this approach?. Thank you in advance.

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• How can I use UML to model a relationship between two classes, where one has functions exposed as friend to the other?

  - by user1796528

  I have a two classes: ------------ --------------- X Y ------------ --------------- relation ------------ ------------------ --------------- A() C() B() D() E() ------------ --------------- I want to inherit just these two functions from X class, where they are defined with the friend access modifier. My class will be: --------------- Y --------------- --------------- C() A() D() --------------- Y class uses some functions of X class namely A and D. How can I model this relationship in a UML class diagram?

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• Hard Copies VS Soft Copies

  - by Garet Claborn

  Where do you draw the line and say, "OK, I'm actually going to print out this piece of code, spec, formula, or other info and carry it around but these pieces can stay on disk." Well, more importantly why do you draw the line there? I've encountered this a number of times and have some sort of vague conceptions beyond "oh now I'm REALLY stuck, better print this out." I've also found some quicksheets of basic specs to be handy. Really though, I have no particular logic behind what is useful to physically have available in the design and development process. I have a great pile of 'stuff' papers that seemed at least partially relevant at the time, but I only really use about a third of them ever and often end up wishing I had different info on hand. Edit: So this is what I'm hearing in a nutshell: Major parts of the design pattern Common, fairly static and prominently useful code (reference or specs) Some representation of data useful in collaborating or sharing with team Extreme cases of tough problem solving Overwhelmingly,almost never print anything.

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• C++ Iterator lifetime and detecting invalidation

  - by DK.

  Based on what's considered idiomatic in C++11: should an iterator into a custom container survive the container itself being destroyed? should it be possible to detect when an iterator becomes invalidated? are the above conditional on "debug builds" in practice? Details: I've recently been brushing up on my C++ and learning my way around C++11. As part of that, I've been writing an idiomatic wrapper around the uriparser library. Part of this is wrapping the linked list representation of parsed path components. I'm looking for advice on what's idiomatic for containers. One thing that worries me, coming most recently from garbage-collected languages, is ensuring that random objects don't just go disappearing on users if they make a mistake regarding lifetimes. To account for this, both the PathList container and its iterators keep a shared_ptr to the actual internal state object. This ensures that as long as anything pointing into that data exists, so does the data. However, looking at the STL (and lots of searching), it doesn't look like C++ containers guarantee this. I have this horrible suspicion that the expectation is to just let containers be destroyed, invalidating any iterators along with it. std::vector certainly seems to let iterators get invalidated and still (incorrectly) function. What I want to know is: what is expected from "good"/idiomatic C++11 code? Given the shiny new smart pointers, it seems kind of strange that STL allows you to easily blow your legs off by accidentally leaking an iterator. Is using shared_ptr to the backing data an unnecessary inefficiency, a good idea for debugging or something expected that STL just doesn't do? (I'm hoping that grounding this to "idiomatic C++11" avoids charges of subjectivity...)

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• Open source ASP.NET MVC project for a SaaS application

  - by DotnetDude

  I am working on a personal project that offers a service online. I'd like put this out to the public. I don't want to reinvent the wheel and use an existing template/open source project and add my service specific functionality. The features I am looking for are: Support for different roles (I need to have an admin role, customer and preferred customer roles) An admin section where admins can manage user accounts, login as with users credentials for providing support Customer pages that are role specific (Ex: Some functionality can be used by preferred customers but not non preferred ones) Preferably a pricing/plans page with payment gateway integration These are some of the basic pages available in most of service sites online. Is there a MVC 3 (preferably 4) written in C# that I can use as a shell to build upon? Thanks

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• Cloudera Hadoop Certification Value in IT Industry for freshers

  - by Saumitra

  I am a software developer with 8 months of experience in IT industry working on development of tools for BIG DATA analytics. I have learned Hadoop basics on my own and I am pretty comfortable with writing MapReduce Jobs, PIG, HIVE, Flume and other related projects. I am thinking of appearing for Cloudera Hadoop Certification. My question is whether it will benefit me in any way, considering that I am a fresher with not even 1 year of experience. Most of the jobs posting which I have seen related to Hadoop requires at least 3 years of experience. I currently work in India but I can relocate. Please help me in deciding whether I should invest my time in perfecting my Hadoop skills for certification?

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• Is Windows 7 written in Xaml? [closed]

  - by Jordan

  Is Windows 7 written using Xaml? Edit Wow, so much hate for such a little question. I'm not an idiot. I know what XAML is. I use it every day. I was just curious whether some of the visual features were laid out with XAML, or if XAML was incorporated in some way to the product. I'm sorry if it is a programming sin not to know what Windows 7 was written in. I mean, I know Windows XP et al used C++/C, I've used Win32 quite a lot (and MFC and .NET).

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• How should I host our scalable worker processes?

  - by Pieter Breed

  We are designing a new architecture for an enterprise business. The principles we've followed so far is not to develop what you can (possible buy and) deploy, ie, don't reinvent any wheels. In this way we've decided on CQRS, RabbitMQ, Riak and a bunch of other things. We still need to write /some/ business code though and these will be in the form of worker processes, which will consume commands from a message queue and after any side-effects, produce events onto another message queue. The idea behind this is that via the competing-consumers design we will have a scalable design right out of the box. One option is of writing a management infrastructure that will know how to: deploy code instantiate processes kill processes update configuration etc IE provide fault tolerance and scalability. Also, this is exactly what something like GAE and Heroku does for you, but in a public setting and in our organization, public is bad. My question is, is there an out-of-the-box solution that we can use to host our consumers in? Like a private cloud or private platform-as-a-service. Private Heroku or GAE. Is there some kind of software or software product with which we can do all of these things and thereby get scalability and fault tolerance over our consumers?

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