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• 2D vector value replacement using classes; genetic algorithm mutation

  - by gcolumbus

  I have a 2D vector as defined by the classes below. Note that I've used classes because I'm trying to program a genetic algorithm such that many, many 2D vectors will be created and they will all be different. class Quad: public std::vector<int> { public: Quad() : std::vector<int>(4,0) {} }; class QuadVec : public std::vector<Quad> { }; An important part of my algorithm, however, is that I need to be able to "mutate" (randomly change) particular values in a certain number of randomly chosen 2D vectors. This has me stumped. I can easily write code to randomly select the value within the 2D vector that will be selected for "mutation" but how do I actually enact that change using classes? I understand how this would be done with one 2D vector that has already been initialized but how do I do this if it hasn't? Please let me know if I haven't provided enough info or am not clear as I tend to do that. Thanks for your time and help!

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• How to determine if a programming language is verbose or terse?

  - by sunpech

  Programming languages can often be described as verbose or terse. From my understanding, a verbose language is easy to read and understand, while a terse language is concise and neat, but more difficult to read. Should there be other things to consider in the definitions? It seems much of the popular programming languages of today are verbose, and these terms two terms are only used to describe a language as being more or less, relative to than another language. How do we determine if a programming language is more verbose/terse over another? Example: Is C# more verbose than Java?

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• Best programming/scripting language for a non-programmer

  - by thatismatt

  What programming/scripting language would you recommend to a superuser who is a not a programmer?

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• What are the options for setting up a UNIX environment to learn C using Kernighan and Richie's The C Programming Language?

  - by ssbrewster

  I'm a novice programmer and have been experimenting with Javascript, jQuery and PHP but felt I wasn't getting a real depth of understanding of what I was doing. So, after reading Joel Spolsky's response to a question on this site (which I can't find now!), I took it back to basics and read Charles Petzold's 'Code' and am about to move onto Kernighan and Richie's The C Programming Language. I want to learn this in a UNIX environment but only have access to a Windows system. I have Ubuntu 12.04 running on a virtualised machine via VMWare Player, and done some coding in the terminal. Is using a Linux distro the only option for programming in a UNIX environment on Windows? And what are the next steps to start programming in C in UNIX and where do I get a compiler from?

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• What would you do if your client required you not to use object-oriented programming?

  - by gunbuster363

  Would you try to persuade your client that using object-oriented programming is much cleaner? Or would you try to follow what he required and give him crappy code? Now I am writing a program to simulate the activity of ants in a grid. The ant can move around, pick up things and drop things. The problem is while the action of the ants and the positions of each ant can be tracked by class attributes easily (and we can easily create many instances of such ants) my client said that since he has a background in functional programming he would like the simulation to be made using functional programming. What would you do?

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• Need tutorials/cheatsheets to learn web programming basics.

  - by zillion

  I need tutorials/cheatsheets to learn web programming basics. Thanks for your help!

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• generic programming- where did it originate?

  - by user997112

  Im trying to work out if generic programming was a functional programming feature which was then introduced into Java, C++ and C# or did the latter copy it from the functional programming languages like Haskell, Lisp, OCaml etc? Google is giving me lots on what generic programming is, but not where it originated. All I can see is that Ada implemented it early on. Would you class it as a functional programming technique?

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• Is programming for me? It seems too rigid and unforgiving.

  - by AM

  This question is a follow-up to: Should I continue to pursue programming based on my experience? I am currently majoring in CS in college and was thinking along similar lines as the above question. I'm fine at math and logic, but I haven't yet found programming to be enjoyable. Although I like the idea of being able to build software, too much of it seems to consist of figuring out tiny details or dealing with annoying bugs. So far I've only done small school projects and the like. Does programming become more enjoyable once you have more experience? How can someone know if a career in it is for them?

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• How to deal with the need to know multiple programming languages? When to stop learning new languages?

  - by Raphael

  I am a relatively young programmer. I am 23 and I have been programming professionally for about 5 years. As most programmers I started with C, learned some x86 assembly for fun and then I found C++ which turned out to be my greatest passion in the programming world. Programming with C and C++ forces you to learn platform specific APIs, libs and frameworks all of each requires constant study and experimentation. After some time I had to move on to Java and C# as the demand on my region is basically for these languages. With these languages I entered the world of web development and then I had to learn javascript. Developing for the .NET Framework was exciting at first but I constantly felt as I was getting tied up by Microsoft (and of course the .NET Framework was driving me away from Linux). For desktop development I could do pretty much everything I did with .NET using C++ with Qt but for web development I had to look for an alternative. Quickly I found Django and then I proceeded to learn Python so I could use Django. Nowadays I am learning iOS development with Objective-C. So far it was pretty much easy to learn all these languages (C++ trained me well) but I am worried that someday I won't be able to keep track of them all. Just to clarify. The only languages I learned cause I had to were C# and Java. All of the others I learned for fun, because I love programming and learning new things. Also I like to keep my skills sharp on desktop, web and mobile development. My question is: How do you keep track of multiple programming languages? (I mean, keep track of changes to these languages and keep your skills sharp) and: Is there such a thing as enough programming languages?

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• Why hasn't functional programming taken over yet?

  - by pankrax

  I've read some texts about declarative/functional programming (languages), tried out Haskell as well as written one myself. From what I've seen, functional programming has several advantages over the classical imperative style: Stateless programs; No side effects Concurrency; Plays extremely nice with the rising multi-core technology Programs are usually shorter and in some cases easier to read Productivity goes up (example: Erlang) Imperative programming is a very old paradigm (as far as I know) and possibly not suitable for the 21st century Why are companies using or programs written in functional languages still so "rare"? Why, when looking at the advantages of functional programming, are we still using imperative programming languages? Maybe it was too early for it in 1990, but today?

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• Is there a programming language that performs currying when named parameters are omitted?

  - by Adam Gent

  Many functional programming languages have support for curried parameters. To support currying functions the parameters to the function are essentially a tuple where the last parameter can be omitted making a new function requiring a smaller tuple. I'm thinking of designing a language that always uses records (aka named parameters) for function parameters. Thus simple math functions in my make believe language would be: add { left : num, right : num } = ... minus { left : num, right : num } = .. You can pass in any record to those functions so long as they have those two named parameters (they can have more just "left" and "right"). If they have only one of the named parameter it creates a new function: minus5 :: { left : num } -> num minus5 = minus { right : 5 } I borrow some of haskell's notation for above. Has any one seen a language that does this?

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• What languages are the kids of today actually programming in? Does anyone have real data?

  - by Gaz Davidson

  Back in the 80s colleges were teaching Pascal because it is easy to learn, while myself and many others like me were learning BASIC because it was not only easy to learn but accessible and also fashionable (for an extremely liberal definition of fashion) It has just occurred to me that empirical data on the actual programming languages kids are choosing to use should be a good indicator of which language would be the ideal first choice for educators. Please note that this question is not "what do you think is a good programming language for kids?"

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• Why aren't web frameworks simple, elegant and fun like programming languages? [on hold]

  - by Ryan

  When I think of pretty much any programming language - like C, C++, PHP, SQL, JavaScript, Python, ActionScript, Haskell, Lua, Lisp, Java, etc - I'm like awesome I would love to develop a computer application using any of those languages. But when I think of web frameworks(I do mostly PHP) - like Cake, CI, Symfony, Laravel, Zend, Drupal, Joomla, Wordpress, Rails, Django, etc - I'm like god no. Why aren't there web frameworks that provide me with simple, fun and powerful constructs like a programming language?

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• Are closures with side-effects considered "functional style"?

  - by Giorgio

  Many modern programming languages support some concept of closure, i.e. of a piece of code (a block or a function) that Can be treated as a value, and therefore stored in a variable, passed around to different parts of the code, be defined in one part of a program and invoked in a totally different part of the same program. Can capture variables from the context in which it is defined, and access them when it is later invoked (possibly in a totally different context). Here is an example of a closure written in Scala: def filterList(xs: List[Int], lowerBound: Int): List[Int] = xs.filter(x => x >= lowerBound) The function literal x => x >= lowerBound contains the free variable lowerBound, which is closed (bound) by the argument of the function filterList that has the same name. The closure is passed to the library method filter, which can invoke it repeatedly as a normal function. I have been reading a lot of questions and answers on this site and, as far as I understand, the term closure is often automatically associated with functional programming and functional programming style. The definition of function programming on wikipedia reads: In computer science, functional programming is a programming paradigm that treats computation as the evaluation of mathematical functions and avoids state and mutable data. It emphasizes the application of functions, in contrast to the imperative programming style, which emphasizes changes in state. and further on [...] in functional code, the output value of a function depends only on the arguments that are input to the function [...]. Eliminating side effects can make it much easier to understand and predict the behavior of a program, which is one of the key motivations for the development of functional programming. On the other hand, many closure constructs provided by programming languages allow a closure to capture non-local variables and change them when the closure is invoked, thus producing a side effect on the environment in which they were defined. In this case, closures implement the first idea of functional programming (functions are first-class entities that can be moved around like other values) but neglect the second idea (avoiding side-effects). Is this use of closures with side effects considered functional style or are closures considered a more general construct that can be used both for a functional and a non-functional programming style? Is there any literature on this topic? IMPORTANT NOTE I am not questioning the usefulness of side-effects or of having closures with side effects. Also, I am not interested in a discussion about the advantages / disadvantages of closures with or without side effects. I am only interested to know if using such closures is still considered functional style by the proponent of functional programming or if, on the contrary, their use is discouraged when using a functional style.

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• Why do most programming languages only support returning a single value from a function?

  - by M4N

  Is there a reason or an explanation why functions in most(?) programming languages are designed to support any number of input parameters but only one return value? In most languages, it is possible to "work around" that limitation, e.g. by using out-parameters, returning pointers or by defining/returning structs/classes. But it seems strange, that programming languages were not designed to support multiple return values in a more "natural" way.

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• Will there be any more books in the Game Programming Gems series?

  - by Laurent Couvidou

  It's been more than three years now that the last Game Programming Gems book was published. The official website isn't updated anymore, and this page of Mark DeLoura's website seems to imply that the series is over. Was there ever an official statement about this? Was number 8 the last book? The Game Programming Gems were one of the most (if not the most) important resource for me and probably thousands of developers around the globe, did the Internet kill them?

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• What to do when the programming activity becomes a problem?

  - by gablin

  I once saw a program (can't remember which) where it talked about people "experiencing flow" when they are doing something they are passionate about. When "in flow", they tend to lose track of time and surrounding, concentrating only on their activity at hand. This happens a lot for me when I program; most particularly when I face a problem. I refuse to give up until it's solved. This usually leads to hours just rushing by and I forget to eat lunch, dinner gets pushed into far into the evening, and when I finally look at the clock, it's way into the wee-hours of the night and I will only get a few hours of sleep before having to rise early in the morning. (This is not to say that I'm in flow only when facing a problem - but I find it particularly hard to stop programming and step back when there's something I can't solve immediately.) I love programming, but I hate it when it disrupts my normal routines (most importantly eating and sleeping patterns). And sitting still for so many hours, staring a screen, is not healthy. Please, any ideas on how I can get my rampant programming activity under control?

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• Which programming language should i choose? (much more info inside) [closed]

  - by Andreas

  I am not completely sure if this is the right place to put this question, but since it's the programming thread I guessed that there's many experienced programmers here. :) Ok, hello! My name is Andreas and I am a 16 years old guy from Norway. For some time now I've wanted to learn a programming language. Six months ago I started learning C++, but quit withing a week due to lack of motivation. The same thing happend only 2 months ago when I tried to learn Lua. I wanted to program mods to the game Garry's mod, and was really motivated. Then I stopped playing the game, and the programming stopped with it. Today though I am ready again. The only difference is that I am not completely sure what I want to do with the language. I only want to create something, and I miss the progress of failing and enduring hard work until I finally solve the problem I've worked on for hours. What I am trying to say is; Is there any program out there that allows me, a complete noob (I didn't learn that much in a week, so I like to call myself a beginner), to create apps, mods or something similar but at the same time being qualified as a first time language? I was thinking of Java, because Android, Minecraft and many other applications and games use it. But I've heard that it is going to be replaced by a program called HTML 5 (whatever that is), is this true? I certainly don't want to spend many hours of my life on something that is useless in a year or two. Hopefully I didn't make this too complicated. I know that it is hard to recommend something when I don't have a goal, but I really don't know what to say. Have a good day kind folks! - Andreas EDIT:* I did not know that this was an off topic question, really sorry!

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• Is there any place to find real-world usage-style tutorials for programming languages?

  - by OleDid

  Let's face it. When you want to learn something completely new, be it mathematics or foreign languages, it's easiest to learn when you get real world scenarios in front of you, with theory applied. For example, trigonometry can be extremely interesting when applied to creation of 2D platform games. Norwegian can be really interesting to learn if you live in Norway. When I try to look at a new programming language, I always find these steps the hardest: What tools do I need to compile and how do I do it Introduction-step: Why is this programming language so cool? Where and how is it used? (The step I am looking for, real-world scenarios) The rest, deep diving into the language, pure theory and such, is often much easier if you have completed step 1 and 2. Because now you know what it's all about, and can just read the specification when you need to. What I ask is, do you have any recommendations for places I can find such material for programming languages? Be it websites or companies selling books in this style, I'm interested. Also, I am interested in all languages. (If I had found a "real-world usage" explained for even INTERCAL, I would be interested). In some other thread here, I found a book called "Seven Languages in Seven Weeks". This is kind of what I am looking for, but I believe there must be "more like this".

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• viable part-time career in IT/programming?

  - by Rider

  Hi, I'd like to ask for some career advice from you people. Is there a viable job/career that can be done in programming/IT for the long term? Right now, I am thinking about website (PHP?) developer path. My background: I have a degree in computer science and have been a programmer/system analyst for almost 10 years. Lately I took a big break from programming and studied for a B.arch. degree (yes architecture), only to discover that architecture offers zero (0) jobs where I'm from, for 3 years already (and no, I am not going to move and the grass in not greener in other places). I have never been particularly interested in programming, in fact I was bored by it. But I was always quite good at both programming and system analysis, and very valued by practically all my employers. On the other hand, I have never been valued or offered a good job in any other field (although I can do many things, like design, architecture, translations, documentation, teaching, etc etc.) I guess the human component has been always more important for me in programming jobs - I value all the good people I worked with, but not projects. However, I have about zero skills or desire to be a project manager. I also have close to zero skills for selling myself. I like it best when I can do "my thing", have my niche, have an ownership of some project. Right now my career perspective is to do part time programming and to part time teach yoga. I have already started the yoga teaching part. Do you think that part time programming is viable? And what niche works best for that? I have considered web development, QA, or software development in a company like I did before. However, my fear is that when you do programming part-time, you get the most boring coding work, only to see your colleagues move to more interesting projects and up their respective career ladders. I also fear that part-timers are not especially needed either. And, since I don't share much enthusiasm at programming, I'd rather not be around young programmers boiling with geeky enthusiasm about coding, but rather QA mindset with people from different backgrounds and life paths might work better for me. Thanks for any advice, --Rider

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• Are Mark Up languages considered programming languages?

  - by giri

  Hi Are all those markup languages programming languages? For example XML or HTML are programming languages?

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• How to improve problem solving skills/programming skills

  - by kaibuki

  Hi All, I am new to programming, and have been given many interviews for jobs, but what I lag is the concepts and skills of general problem solving not respect to any particular programming language. are there any books or material available which can help me upgrade my programming skills. looking forward for you guys to share your views. Thanks a millions.. Kai

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• How do the young start programming nowadays

  - by PP

  Back in the late 80s/early 90s I learned GWBasic on MS-DOS. Then Turbo Pascal. Then Turbo C/Asm. Later I stumbled into PHP and finally made a career out of Perl programming. I'm curious how actual under-25s found their way into programming. There is a lot of discussion about what path you would steer your children if you wanted them to learn programming, but I would like to hear from the newer generation to find out their more modern experiences about becoming a programmer. Note: no stories from people who first discovered programming at university.

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• Windows Network Programming

  - by bdhar

  I am planning to get some good book for Windows Socket Programming in VC++. I have 2+ years of experience in working with VC++/ATL/COM/MFC; but not in the networking domain. I have been doing some search in Google for "Windows network programming" books. There are few but they have both good and bad comments scattered all over; and I am not able to decide anything. Please recommend some good book with Pros and Cons. The books I found are below. Windows Sockets Network programming Network Programming for Microsoft Windows Thanks.

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• How can I make my Programming Logic stronger?

  - by Parth

  How can I make my Programming Logic stronger?

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