2,898 Posted Topics
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| | Like Moschops link says, the options are basically between using a zombie state or throwing from the constructor. The latter is the ideal solution, for an ideal world in which you can adopt exceptions wholesale for everything. Unfortunately, the real world is not very ideal, and therefore, the zombie state … |
 | Re: C++ Books Here is my two cents from taking a bit of time to skim through most of the major books on C++. **For Beginners** The best I can do to help you is convey hearsay about recent readers having said "I learn C++ using book X, and it was really good.", …  |
 | > But if the body receives consciousness in the same way that a cable box receives satellite signals A cable box receives satellite signals?!? Ok... Well, I guess he meant the way a high-gain antenna receives VHF/UHF signals. I must assume that he is very poorly informed about the way …  |
 | Mac's are definitely very common among computer science or computer engineering students. I'm not sure they're really the best. I would recommend a PC laptop on which you install Linux for a dual boot with Windows. Windows is better than Mac for using the engineering software you might need for … |
 | That's right! One day you might buy a car equipped with several autonomous driving features, maybe even door-to-door autonomy, and guess what? A part of me might be driving you around that day. I recently accepted an offer to join the autonomous driving systems team at Bosch's Research and Technology …  |
 | > things like Weka and RapidMiner These seem (at first glance) like two very typical examples of the kinds of "tools" you often find for specific purposes (e.g., analytics). Weka is an academic project, probably written by students to try out specific algorithms, it's written in an academic language (Java), … |
 | > I'm used to seeing eular rather than euler It's neither *eular* nor *euler*, it's **Euler**, as in, **Leonhard Euler**, one of the greatest mathematicians to ever walk this Earth. You can at least spell his name correctly, with a capital letter, he earned it. The greatest tragedy is probably … |
 | Re: The future! [PacMan has invaded the streets!!](https://support.google.com/maps/answer/6178227?hl=en) |
| | Re: Google Go OOP I've never looked into this language before you mentioned it. It has some interesting elements. I'm glad you got me to look into it. First, I love the built-in concurrency support in Go. It has Ken Thompson's finger-prints all over it. It's basically structured like Unix pipes, which are awesome. …  |
 | > this downcast is invalid and will throw an exception. Actually, it won't. Invalid downcasts only throw a `std::bad_cast` if you use references (because you can't have a null reference). If you are casting to a pointer type, such as `Derived*`, the resulting pointer will be null (`nullptr`) and no … |
 | Generally speaking, the component you are looking for is called a "linear actuator". It is most commonly using pneumatics (compressed air) to get their power, as those shown in the second link by pritaeas. However, you have to understand that with such a system, you need a source of compressed …  |
| | Has Lisp ever really been anything more than an academic language with very little real-life applicability? I know that some software use Lisp-based syntax for their scripting language, and that there are tons of dialects of Lisp, but that's mainly because it's super easy to parse (i.e., people who like …  |
 | Write an example of object-oriented programming in C, including dynamic dispatching mechanisms and run-time type identification. This is something people do often in C, and always in a clumsy, ad-hoc way. |
| | As a 21st century viking, I'm happy that they stopped naming their distributions after those false gods of the puny Romans. May Freja bring fertility to this distribution! |
| | I agree that the definition is kind of fuzzy here. Broadly speaking, "engineer" means that you can design solutions to complex problems. Would a "good programmer" mean someone who can't do that, or can only do that for simple problems? Then, what makes him/her "good"? And then, there's the problem … |
 | This is a bit tricky to explain, because it involves a number of implementation details about `std::vector`. It is clearer if we expand the main code a bit, with some additional print-outs: std::vector <Foo> vec; std::cout << " Adding..." << std::endl; vec.push_back(Foo(15)); std::cout << " Adding..." << std::endl; vec.push_back(Foo(12)); std::cout … |
| | I think you have many misconceptions about the compilation and linking process of C/C++ sources. I suggest you read [my comprehensive tutorial](https://www.daniweb.com/software-development/cpp/tutorials/466177/understanding-c-from-source-to-binaries) on the subject. Like NathanOliver said, there is (almost) no reason to ever `#include` cpp files. Each cpp file should be compiled separately (they each should have the … |
| | # Introduction # A recurring problem many newcomers face when tackling C++ is the compilation process, from sources to binaries. This tutorial will detail that process. It will be especially useful for people only familiar with higher-level languages (if any), but veterans of one or more native languages (C, Fortran, … |
| | The most "powerful" top to bottom combination of languages for desktop / server applications seems to be C / C++ / Python. That's my two cents. |
| | This is funny because there was just a guy presenting a fuzzing tool for testing Clang (the C / C++ / Obj-C compiler), check it out [here](http://lists.cs.uiuc.edu/pipermail/cfe-dev/2015-January/040705.html). This is really cool stuff, especially the [afl-fuzz](http://lcamtuf.coredump.cx/afl/) tool. > I want to avoid to test some program which is widely used or …  |
| | Re: Wisdom Teeth All my wisdom teeth were horizontal and had to be removed even though they weren't sticking out yet. I didn't get general anesthesia (the dentist didn't even bring that up as an option, I guess local anesthesia was enough). The gum had to be cut open, the teeth had to … |
| | I don't think anyone really does 3d graphics in C#, or at least, I don't think anyone should. As far as I know, Unity is written in C and C++. It's only the high-level bindings that are in C#. C# being a Microsoft-only language (in practice), I would imagine that … |
| | Re: New OS I would presume that your laptop is fairly old, right? Like from the time that XP still came pre-installed on new computers. If that's the case, I'm not too optimistic about getting a newer version of Windows (which would be Windows 7, as the others suck) to work smoothly on … |
 | It cannot be incorporated into the command prompt because of batch file scripts that need to remain compatible. Basically, if there are batch files that use variable names that are also Unix command names, then those scripts would be broken. Then, in order to be relevant as a Unix-like terminal, … |
| | If you are using Linux, you can easily wipe out an HDD by using the `dd` command, as described [here](http://how-to.wikia.com/wiki/How_to_wipe_a_hard_drive_clean_in_Linux). **Make sure to use the correct device**. In those instructions, they wipe out the `/dev/sda` hard-drive, but this will be different for you. You can use the instructions on [this … |
| | This looks like a pretty serious problem. Are you sure that you were able to boot into that LiveCD before? Not being able to boot with a LiveCD that you once was able to boot with means that there is something seriously wrong with the hardware. The fact that you … |
 | I second the others, I would nominate [rubberman](http://www.daniweb.com/members/715612/rubberman) for sure. And also, the "eternally awesome" [deceptikon](http://www.daniweb.com/members/937956/deceptikon) (or is it "eternally confuzzled".. I'm confuzed.. wink wink). And, here are a few common encounters in the C++ forum for a long time: Labdabeta, Moschops, L7Sqr, .. that's all I can think of … |
| | I think there is at least some hope. For example, there are some very serious people who have worked for years to come up with a solution that allows you to cope with the end-of-life of Win Server 2003 without any security risks, they put up [clear and detailed instructions … |
| | >Editing of posts works fine? As always, you can only edit your post for up to 30 minutes after posting. Wrong, at least, not right now. Editing of posts does not work (no button appears for it, unless it's now somewhere else that I can't find), and it's not a … |
| | I know that VirtualBox has "guest additions" that will provide 3D graphics (or "3D acceleration" in old-school terminology). It's all documented [here](https://www.virtualbox.org/manual/ch04.html). Pay attention to the warning that says that you need to be in "Safe Mode" in your Windows guest when you're installing the graphics guest additions. Obviously, I … |
| | We cannot decide for you, because we don't know what you want or what would make you happy. Rubberman put it very well, computer science is science, and computer engineering is engineering. Don't expect a computer science degree to make you a proficient programmer. There are certainly some people that … |
| | Download and install the [recommended driver](http://www.nvidia.ca/Download/driverResults.aspx/73666/en-us), and blacklist nouveau, as rubberman said. And, also as rubberman said, **do not bother** with the drivers suggested by the package manager (aka "additional drivers"). |
| | Are you sure you plugged in all the connections of the power supply? Make sure that all the places where the old power supply connected to are also connected now. The reason I'm saying this is that usually the fans use separate power feeds from the electronic components (CPU, Mobo, …  |
| | >>like int occupies 2 bytes Wow, how old is your computer? Usually, on a 32bit system, an int occupies 4 bytes (and 8 bytes on a 64bit system). For an int to occupy 2 bytes, your system must be pretty old (or very special). >>How much memory does the reference … |
| | For linked-lists, the merge-sort algorithm is pretty much the only decent choice. For arrays, things are a lot more subtle and interesting, but not for linked-lists, it's merge-sort that's just the clear winner over any other option (although it could be that insertion-sort is better when the list is very … |
| | You are a very valuable member RikTelner, and you certainly deserve that tag. There is no need to be an expert on everything (or anything, for that matter) to be respected and provide valuable contributions. Most discussions here involve one or a few people needing help on something they don't … |
 | The same for me, I see the red and blue pills... not gray. I think the effect is stronger when you take your focus off the images (so they get blurry).  |
| | That could be pretty cool. I've considered doing something like that myself too. Not sure about the live Q&A part, it could be hard to gather a sufficient audience for that. Maybe you can try it in two parts: a video demonstration with an invitation to ask questions, and then … |
| | To add an element to a `vector`, you need to use the `push_back` function. The error comes from the fact that when you are accessing `v[0]` when the vector is empty, you will get an error because there is nothing to access. Your insert function could look like that: template … |
 | This is a very weird error. I suspect that it's a bug in MSVC. Delegating constructors is a pretty new feature for MSVC. AFAIK, there isn't much experience with it yet, i.e., people, like me, don't use delegating constructors yet because we have to cater to the lowest common denominator … |
| | I would guess that the errors you got prior to this one prevented the "podofo.lib" library from getting built correctly, which is why it wasn't found later on when it was needed (by the "CreationTest" program). When it comes to dealing with compilation or linking errors, the rule is to … |
 | Really? You had the same problem as the OP? You mean the problem that is triggered when someone sends you a message on your shoutbox.... And your shoutbox is currently empty, because nobody ever sent you a message... I guess being a troll is a lonely affair.  |
| | > Is there a result that states how many edges I need to generate before the graph becomes connected? Well... one hint to this might be found in the definition of a [spanning tree](http://en.wikipedia.org/wiki/Spanning_tree). The only question remaining is, how many edges does a tree with N vertices have? (this … |
| | > Every bug you find is the last one. I've been finding my last bug every week for the past 10 years... yep, that's how good I am. I found my last bug ever last week, now my code is flawless. ;) > I would have to say engineer. I …  |
 | How shocking... (roll eyes) I remember how Microsoft sold secureboot to the world by promising that it would always be possible to switch it off, and thus, not locking owners out of the hardware they paid for. How long did that promise last? For a few years and for the … |
| | These are hexadecimal values, not characters. If you try to read them as characters, you will end up with the character array containing something like this: c[16] = {'4', 'C', '6', '1', ' ', '6', ..., 'C'} You need to read them as hexadecimal numbers. Here is how you do … |
| | I believe that the problem is that your lines 35-36: sumxto2 = pow(sumx2, 2); sumyto2 = pow(sumy2, 2); should be as follows: sumxto2 = pow(sumx, 2); sumyto2 = pow(sumy, 2); note the use of `sumx` and `sumy` instead of the `sumx2` and `sumy2`. |
| | Windows is programmed in C and C++. Its native APIs (win32) are in C. Most professional Windows software is written in C++ (like Visual Studio, MS Office, Adobe products, etc..). I don't understand what you mean by saying that you need C# to write native applications for Windows. C# is … |
| | I command you for your enthusiasm with this project of yours. But Schol-R-LEA is right, you are getting dangerously close to spamming with these posts. I deleted the other duplicate posts you made. About your project.... I'm afraid you have a lot to learn. It pains me to say that … |
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