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  • GLIBC_2.8 not found

    - by Thomas Nilsson
    As a newbie I seem to have messed up my upgrade leaving my system in a very unstable state. I attempted an upgrade from 8.04LTS which ended in an error about libc and kernel upgrades. I tried to upgrade the kernel but am now unsure if that worked, because when I retried my dist-upgrade there was a lot of errors about pre-dependencies and leaving packages un-configured. Now I have a system that answers almost every command with: /lib/libc.so.6: version `GLIBC_2.8' not found (required by /lib/libselinux.so.1) I probably should try a complete re-installation, but I'm investigating if there is any possibility of getting a working glibc so that I at least can have some commands working to ensure that my backups are recent etc. before doing the clean install. not even 'ls' works without saying "glibc_2.8 not found".

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  • Developing configuration syntax - best practise/rules/methods?

    - by Isaac
    I am currently developing a small application, which checks if provided data meets certain requirements. The requirements are actually a long list, and might be changing, so I defined a syntax which allows me to state all of the requirements briefly and in a seperate file. Now the overall requirements for the application have changed, and I need to change my configuration syntax. Which leeds me to wonder if there is methodoloy or best practise for developing such syntaxes. Currently what I do is I think about the requirements and come up with an initial syntax, start configuring the first few items and see how it works. If I come upon something that does not work well or not at all with the current syntax, I change the syntax, if possible in a backward compatible way. This somehow works for me, but it feels a bit like fishing in troubled water. Also I feel it does not nessessarly lead to the most concise and easy to understand/use syntax. So I was wondering what other people do, especially if there is a better approach to this.

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  • Generated Methods with Type Hints

    - by Ondrej Brejla
    Hi all! Today we would like to introduce you just another feature from upcoming NetBeans 7.3. It's about generating setters, constructors and type hints of their parameters. For years, you can use Insert Code action to generate setters, getters, constructors and such. Nothing new. But from NetBeans 7.3 you can generate Fluent Setters! What does it mean? Simply that $this is returned from a generated setter. This is how it looks like: But that's not everything :) As you know, before a method is generated, you have to choose a field, which will be associated with that method (in case of constructors, you choose fileds which should be initialized by that constructor). And from NetBeans 7.3, type hints are generated automatically for these parameters! But only if a proper PHPDoc is used in a corresponding field declaration, of course. Here is how it looks like. And that's all for today and as usual, please test it and if you find something strange, don't hesitate to file a new issue (product php, component Editor). Thanks a lot!

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  • constructor should not call methods

    - by Stefano Borini
    I described to a colleague why a constructor calling a method is an antipattern. example (in my rusty C++) class C { public : C(int foo); void setFoo(int foo); private: int foo; } C::C(int foo) { setFoo(foo); } void C::setFoo(int foo) { this->foo = foo } I would like to motivate better this fact through your additional contribute. If you have examples, book references, blog pages, or names of principles, they would be very welcome. Edit: I'm talking in general, but we are coding in python.

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  • Software design methods for Java or any other programming language

    - by IkerB
    I'm junior programmer and I would like to know how professionals write their code or which steps they follow when they are creating new software. I mean, which steps they follow, which programming methodology, software architecture design application software, etc. I would like to find a tutorial where they explain from the beginning which steps I have to follow from The Idea I have in my mind to the final version of the application in any language. Or perhaps how is your programming steps or rules that you used to follow. Because everytime I want to create the an application I spend few time on the design and a lot of time coding (I know, that's not good).

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  • Constructor should generally not call methods

    - by Stefano Borini
    I described to a colleague why a constructor calling a method can be an antipattern. example (in my rusty C++) class C { public : C(int foo); void setFoo(int foo); private: int foo; } C::C(int foo) { setFoo(foo); } void C::setFoo(int foo) { this->foo = foo } I would like to motivate better this fact through your additional contribute. If you have examples, book references, blog pages, or names of principles, they would be very welcome. Edit: I'm talking in general, but we are coding in python.

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  • Methods to access US Netflix from Chromecast?

    - by lfk
    I need to access US Netflix using Chromecast but changing router configuration is not an option (I don't have access to the wireless router). On my laptop I use VPN, so one option is to use my laptop as a hotspot, but I don't always have cable connection for my laptop. Besides I was hoping to need only my iPad to use the Chromecast. Is there any other way or should I return the Chromecast while I still can?

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  • Methods Of Preventing Spams In Blogs

    One of the most widely used form of spamdexing method in today';s market is comment spam. This method involves the use of random and irrelevant comments, commonly promoting a commercial service in blo... [Author: Margarette Mcbride - Web Design and Development - June 08, 2010]

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  • Techniques and methods to improve and speedup development

    - by Jlouro
    I just got a new project. It’s a WinForm app. And it’s interesting because I will have the possibility to learn how fish farms work and are managed. I will have to develop touch interfaces, and use datasnap to communicate and sync data between farm and office. The development will be done in DELPHI win32, still not sure about the database, but maybe SQLlite. So now comes the difficult part of the project, building it. I am just finishing one. It took me a lot of time to do it and I am a bit “burned out”. I will have time to relax, not much, but a few days. What I am looking is some tips and tricks and possibly tools to be able to speed up the development. It must be up and running in 2 months. So what tricks do you use to speed up things?

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  • Lookup table display methods

    - by DAXShekhar
    public static client str lookupTableDisplayMethod(str _tableId) {     SysDictTable        dictTable   = new SysDictTable(str2int(_tableId));     ListEnumerator      enum;     Map                 map         = new Map(Types::String, Types::String);     ;     if (dictTable &&         dictTable.rights() > AccessType::NoAccess)     {         enum = dictTable.getListOfDisplayMethods().getEnumerator();         while (enum.moveNext())         {             map.insert(enum.current(), enum.current());         }     }     return pickList(map, "Display method", tableid2pname(_tableId)); }

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  • Whether to separate out methods or not

    - by Skippy
    I am new to java and want to learn best coding practices and understand why one method is better than another, in terms of efficiency and as the coding becomes more complicated. This is just an example, but I can take the principles from here to apply elsewhere. I have need an option to display stuff, and have put the method stuff separately from the method to ask if the user wants to display the stuff, as stuff has a lot of lines of code. For readability I have done this: public static void displayStuff () { String input = getInput ("Display stuff? Y/N \n"); if (input..equalsIgnoreCase ("Y")) { stuff (); } else if (input.equalsIgnoreCase ("N")) { //quit program } else { //throw error System.out.print("Error! Enter Y or N: \n"); } } private static String stuff () { //to lots of things here return stuff (); } Or public static void displayStuff () { String input = getInput ("Display stuff? Y/N \n"); if (input..equalsIgnoreCase ("Y")) { //to lots of things here stuff; } else if (input.equalsIgnoreCase ("N")) { //quit program } else { //throw error System.out.print("Error! Enter Y or N: \n"); } } Is it better to keep them together and why? Also, should the second method be private or public, if I am asking for data within the class? I am not sure if this is on topic for here. please advise.

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  • Using "prevent execution of method" flags

    - by tpaksu
    First of all I want to point out my concern with some pseudocode (I think you'll understand better) Assume you have a global debug flag, or class variable named "debug", class a : var debug = FALSE and you use it to enable debug methods. There are two types of usage it as I know: first in a method : method a : if debug then call method b; method b : second in the method itself: method a : call method b; method b : if not debug exit And I want to know, is there any File IO or stack pointer wise difference between these two approaches. Which usage is better, safer and why?

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  • overriding implemented base class methods

    - by user793468
    I read somewhere that the chain of inheritance breaks when you alter a behavior from derived class. What does "altering a behavior" mean here? Is overriding an already implemented method in base class considered as "altering behavior"? Or, does the author mean altering method signatures and the output? Also, I ready Duplicating code is not a good practice, and its a maintenance nightmare. Again, does overriding an already implemented method in base class considered "Duplicating code"? If not, what would be considered as "Duplicating code"? I

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  • What to do when 'dpkg --configure -a' fails with too many errors?

    - by rudivonstaden
    During an upgrade from lucid (10.04) to precise (12.04), the X session froze, and I have been trying to recover the upgrade to get a stable system. I have performed the following steps: Used ssh to log in to the stalled system over the network. Checked the contents of the /var/log/dist-upgrade directory. There was no activity on main.log, apt.log or term.log. top showed that process 'precise' was using about 3% CPU, but I could find no evidence that the upgrade process was still doing anything. 'dpkg' did not show up in top, but it came up with pgrep dpkg | xargs ps Killed the 'dpkg' and 'precise' processes Tried to recover the upgrade by running sudo fuser -vki /var/lib/dpkg/lock;sudo dpkg --configure -a. This was partially successful (some packages were configured), but failed with the message Processing was halted because there were too many errors. I ran the same command a few times, and each time some packages were configured but others failed. Tried running sudo apt-get -f install. It fails with similar errors to dpkg. The current situation is that dpkg --configure -a and sudo apt-get -f install fails with two kinds of error: Dependency issues, e.g.: dpkg: dependency problems prevent configuration of cifs-utils: cifs-utils depends on samba-common; however: Package samba-common is not configured yet. dpkg: error processing cifs-utils (--configure): dependency problems - leaving unconfigured Resource conflict, e.g.: debconf: DbDriver "config": /var/cache/debconf/config.dat is locked by another process: Resource temporarily unavailable Additionally, it seems there's reference to potential boot problems, so I'm not keen to reboot without fixing the install first: dpkg: too many errors, stopping Processing triggers for initramfs-tools ... update-initramfs: Generating /boot/initrd.img-3.2.0-25-generic cryptsetup: WARNING: failed to detect canonical device of /dev/sda1 cryptsetup: WARNING: could not determine root device from /etc/fstab So my question is, how to get a working install when dpkg --configure -a fails?

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  • Can data classes contain methods for validation?

    - by Arturas M
    OK, say I have a data class for a user: public class User { private String firstName; private String lastName; private long personCode; private Date birthDate; private Gender gender; private String email; private String password; Now let's say I want to validate email, whether names are not empty, whether birth date is in normal range, etc. Can I put that validation method in this class together with data? Or should it be in UserManager which in my case handles the lists of these users?

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  • Installing g++ on 8.04

    - by mathematician1975
    I am running Ubuntu 8.04 (currently I do not have the option to upgrade due to hardware problems). I need to get g++ onto my installation but as this is no longer supported I am unable to use the traditional apt-get approach. What are my options? Are ubuntu packages configured specifically for each version? For example could I manually download a later version of gcc and g++ that do not originally ship with 8.04 (say the 10.04 version for example) and build them from scratch? Do the compilers work in this way in the sense that they have a version PER ubuntu version or are they maintained as separate entities?? I do not know enough about ubuntu internals really and always use apt-get to obtain/update any packages I need. If it is possible to do it this way is there a way to be certain that I have everything I need with regards to utility packages needed by g++ for the installation??

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  • calling methods if previous call success

    - by New Developer
    I my c# program I have to perform 5 steps(tasks) sequentially. basically these five should execute one after the other only the previous task performed is success. Currently I have done it in following style. But this is not very good code style to follow. var isSuccess=false; isSuccess=a.method1(); if(isSuccess) isSuccess=a.method2(); if(isSuccess) isSuccess=a.method3(); if(isSuccess) isSuccess=a.method4(); if(isSuccess) isSuccess=a.method5(); How can I re factor this code. What is the best way I can follow?

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  • Top 6 Methods of Link Building

    Link building is single most important strategy for effective search engine optimization. With tons of websites being added to the World Wide Web everyday, it is very important to keep your website popular by creating high value back links. Beginners commit very obvious mistakes in their link building practices which can be easily avoided if one follows the recommendations.

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