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• ipod not mounting

  - by rls

  Tried to connect my iPod, but got this message: Error mounting: mount: wrong fs type, bad option, bad superblock on /dev/sdb2, missing codepage or helper program, or other error In some cases useful info is found in syslog - try dmesg | tail or so Have seen links to this here, but beeing rather green, I don't understand much. https://bugs.launchpad.net/ubuntu/+source/util-linux/+bug/734883 What do I do now? The dmesg|tail says [ 2819.709437] sd 6:0:0:0: [sdb] 3901376 4096-byte logical blocks: (15.9 GB/14.8 GiB) [ 2819.710161] sd 6:0:0:0: [sdb] Assuming drive cache: write through [ 2819.735294] sdb: [mac] sdb1 sdb2 [ 2819.738060] sd 6:0:0:0: [sdb] 3901376 4096-byte logical blocks: (15.9 GB/14.8 GiB) [ 2819.738671] sd 6:0:0:0: [sdb] Assuming drive cache: write through [ 2819.738688] sd 6:0:0:0: [sdb] Attached SCSI removable disk [ 2820.420130] sd 6:0:0:0: [sdb] Bad block number requested [ 2820.420167] hfs: unable to find HFS+ superblock [ 2820.612140] sd 6:0:0:0: [sdb] Bad block number requested [ 2820.612191] hfs: unable to find HFS+ superblock

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• What's the DCPU-16 thing all about?

  - by ChrisRamakers

  Ever since Notch (of Minecraft fame) announced his next project will include programmable 16bit cpu's ingame everybody seems to want to write VM's for the spec notch has written up. I've seen em written in C, C++, go, javascript, coffeescript, ... Can anyone enlighten me what's so special about the spec notch wrote up or is it just that it's the first game that actually contains a CPU ingame that you can do whatever you want with? It sparked my curiosity but I fail to grasp the thing that makes it so special suddenly everybody needs to write up code for it?

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• How do I improve my problem-solving ability

  - by gcc

  How can I improve my problem-solving ability? Every one says same thing "a real programmer knows how to handle real problem", but they forget how they learn this ability, or where (I know in school, no one gives us any ability, of course in my opinion). If you have any idea except above ones, feel free when you give your advice solve more problems do more exercises, write code, search google then write more ... For me, my question is like "Use complex/known library instead of using your own." In other words, I want your experience, book recommendation, web page on problem solving

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• How can you become a real programming polyglot?

  - by Yob

  I work as a Java programmer, but C and C++ were always my favourite languages during studies. Unfortunatelly I don't have an opportunity to work with them as often as I would like to. As a result I sometimes get realized that I don't remember something quite important (today example: inherited protected members cannot be accessed in derived class constructors). The other example could be Python and Haskell which I enjoy using but don't use everyday. I got an idea to write my own wiki with easy to forget things (e.g. bash tricks & tips) but I find no sense in writing there everything I can forget about coolest programming languages. I know that the best way would be having a side projects (I want to start working on some C/C++ open source project after graduation), but currently I have to write my graduation thesis and work so I merely don't have time to do this. How do you stay sharp in languages that you don't use everyday?

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• Bringing in New Architecture During Maintenance on Legacy Systems

  - by Mike L.

  I have been tasked with adding some new features to a legacy ASP.NET MVC2 project. The codebase is a disaster and I want to write these new features with some thought behind the implementation and not just throw these new features into the mess. I would like to introduce things like dependency injection and the orchestrator pattern; just to the code that I am going to write. I don't have enough time to try to refactor the entire system. Is it OK to not be consistent with the rest of the codebase and add new features following different design principles? Should I not introduce new patterns and just get the features implemented? I feel like it might be confusing to the next person to see parts of the system using a design that other parts are not following.

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• Microsoft Delivers OData SDKs

  New tools make it easier for developers to write Web apps that store data in the cloud.

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• Microsoft Delivers OData SDKs

  New tools make it easier for developers to write Web apps that store data in the cloud.

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• Is it best to try to work at a company where your software directly makes the company money?

  - by Ryan Hayes

  I was told once that the best place to work as a developer is a company where the software you write is what makes the company money, whether it be software production or software services like consulting. This is opposed to a company where the software you write is just to support some other part of the business that makes the money, like manufacturing or finance. I know there are always exceptions, but in general, are employees treated better if they are on the front lines of profit generation, as opposed to being just another cost center? cost center (n.) - A cost center is part of an organization that does not produce direct profit and adds to the cost of running a company. Examples of cost centers include research and development departments, marketing departments, help desks and customer service/contact centers.

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• Setting folder to be writable by apache/php in windows?

  - by Chris Sobolewski

  I have a local test server, and I am attempting to write a file with PHP. I am getting a message that the folder (../uploads/) does not exist or I do not have permission. My directory structure is D:\xampp\htdocs\website\ //<--root D:\xampp\htdocs\website\library //<--where script runs D:\xampp\htdocs\website\uploads //<--where I'd like to save I know on a *nix server, I can just chmod the permission to 0777. What do I need to set on my windows box to give apache the ability to write a file?

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• Are python's cryptographic modules good enough?

  - by Aerovistae

  I mean, say you were writing professional grade software that would involve sensitive client information. (Take this in the context of me being an amateur programmer.) Would you use hlib and hmac? Are they good enough to secure data? Or would you write something fancier by hand? Edit: In context of those libraries containing more or less the best hashing algorithms in the world, I guess it's silly to ask if you'd "write something fancier." What I'm really asking here is whether it's enough on its own.

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• What services exist for finding someone specific to then run your own peer to peer software with?

  - by psr

  If you give people peer to peer software (such as a web sockets application if the peer to peer part gets implemented, but could be anything) the first step for some kinds of applications is to find a specific person and try to connect with them. If neither of you has a URI (and knows what it is) you need a third party to handle finding each other and verifying your identities. After that the third party isn't needed because you go peer to peer. I could of course write that third party software and put it up on a website, but then I would have to write that third party software and put it up on a website (or a server that isn't a website if that's how I want to do it). Does anyone offer this service? Ideally as a website and of course ideally free.

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• Reasons why crontab does not work

  - by Adam Matan

  Many a time and oft, crontab scripts are not executed as expected. There are numerous reasons for that, for example: wrong crontab notation, permissions, environment variables and many more. This community wiki aims to aggregate the top reasons for crontab scripts not being executed as expected. Write each reason in a separate answer. Please include one reason per answer - details about why it's not executed - and fix(es) for that one reason. Please write only cron-specific issues, e.g. commands that execute as expected from the shell but execute erroneously by cron.

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• Starting new project with TDD

  - by Carol

  I'm studying TDD and I read that it also helps you to define the design of the app, correct? So I decided to start creating a new project to help me understand it better. I want to create a simple user registration system that will ask for its name, email address, country (will pick one from a list) and phone number. So the question is... I created a new solution in VS 2010, added a new Test project and I just don't know what tests to write! Since it will help me define the design, what tests could I write here? Thanks for any help!

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• Parallel.For Inconsistency results

  - by ni Gue ???

  I am using VB.net to write a parallel based code. I use Parallel.For to generate pairs of 500 objects or in combination C(500,2) such as the following code; but I found that it didn't always generate all combinations which should be 124750 (shown from variable Counter). No other thread was runing when this code was run. I am using a Win-7 32 Bit desktop with Intel Core i5 CPU [email protected], 3.33 GHz and RAM 2GB. What's wrong with the code and how to solve this problem? Thank You. Dim Counter As Integer = 0 Parallel.For(0, 499, Sub(i) For j As Integer = i + 1 To 499 Counter += 1 Console.Write(i & ":" & j) Next End Sub) Console.Writeline("Iteration number: " & Counter)

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• What do I need to know about Data Structures and Algorithms in the "real" world

  - by Ray T Champion

  I just finished the data structures and algorithms course in school , I took it during the summer so 6wks course vs a 16 wk course during the regular semester. So not only was the course hard but it was really really really fast. My question is what do I need to know about data structures in the real world? I understand what they do and how they work, for the most part, but I had a real tough time coding them , I wouldn't be able to write the code for a binary tree class or a balanced tree class from scratch .... Is that bad? should I retake it , or is knowledge of how they work sufficient, without being able to write the classes from scratch?

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• Handling bugs, quirks, or annoyances in vendor-supplied headers

  - by supercat

  If the header file supplied by a vendor of something with whom one's code must interact is deficient in some way, in what cases is it better to: Work around the header's deficiencies in the main code Copy the header file to the local project and fix it Fix the header file in the spot where it's stored as a vendor-supplied tool Fix the header file in the central spot, but also make a local copy and try to always have the two match Do something else As an example, the header file supplied by ST Micro for the STM320LF series contains the lines: typedef struct { __IO uint32_t MODER; __IO uint16_t OTYPER; uint16_t RESERVED0; .... __IO uint16_t BSRRL; /* BSRR register is split to 2 * 16-bit fields BSRRL */ __IO uint16_t BSRRH; /* BSRR register is split to 2 * 16-bit fields BSRRH */ .... } GPIO_TypeDef; In the hardware, and in the hardware documentation, BSRR is described as a single 32-bit register. About 98% of the time one wants to write to BSRR, one will only be interested in writing the upper half or the lower half; it is thus convenient to be able to use BSSRH and BSSRL as a means of writing half the register. On the other hand, there are occasions when it is necessary that the entire 32-bit register be written as a single atomic operation. The "optimal" way to write it (setting aside white-spacing issues) would be: typedef struct { __IO uint32_t MODER; __IO uint16_t OTYPER; uint16_t RESERVED0; .... union // Allow BSRR access as 32-bit register or two 16-bit registers { __IO uint32_t BSRR; // 32-bit BSSR register as a whole struct { __IO uint16_t BSRRL, BSRRH; };// Two 16-bit parts }; .... } GPIO_TypeDef; If the struct were defined that way, code could use BSRR when necessary to write all 32 bits, or BSRRH/BSRRL when writing 16 bits. Given that the header isn't that way, would better practice be to use the header as-is, but apply an icky typecast in the main code writing what would be idiomatically written as thePort->BSRR = 0x12345678; as *((uint32_t)&(thePort->BSSRH)) = 0x12345678;, or would be be better to use a patched header file? If the latter, where should the patched file me stored and how should it be managed?

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• New HDD formating on Ext4 root permission

  - by Carlos Salmeron

  OK people good evening, I have this new 80Gb HDD I want to use it as a backup storage for my actual system (14.04) not a server. I formatted it with Gpart but I just can't write in it, when I search for permissions it tells me that only root users can write/create in it, log on as root user and try to change permissions, and I can't do that either. Long have I searched for an answer, looking everywhere but not to find any, is there a way to format it and use it with my user permission? Don't want it on NTFS, is there a way?, I have searched in these forums but there’s only an answer to format it in NTFS, so please. Thank you in advance.

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• How to improve programming skills?

  - by Mike

  I'm very new to programming. I started learning PHP about half a year ago, so I do know something. I can write small functions, I can export and import information from a database and I can make a website. I don't know OOP principles and I don't know about objects and classes. Should I move to OOP principles and learn about classes, methods and objects? If not, what should I do? Continue writing simple code? How can a programmer write his/her own API? Is OOP necessary to do this? So how can i improve my skills? I love programming. I spend my 24/7 on it, so any help will be appreciated.

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• Java dev learning Python: what concepts do I need to wrap my head around?

  - by LRE

  I've run through a few tutorials and written some small projects. I'm right in the middle of a small project now infact. All is going well enough thanks in no small part to Uncle Google (who usually points me to Stackoverflow ;-) Several times in the last few days I've found myself wondering "what am I missing?" - I feel that I'm still thinking in Java as I write in Python. This question over at StackOverflow is full of tips about what resources to read up on for learning Python, but I still feel that I'm a Java dev with a dictionary (no pun intended) to translate into Python. What I really want to do is refactor my head to be able to write Pythonic Python instead of Java disguised as Python (not that I want to loose my Java skills). So, the crux of my question is: what concepts does a Java dev really need to learn to think Pythonic? This includes anything that needs to be un-learnt. ps: I consider language syntax to not be particularly relevant to this question.

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• Expressions that are idiomatic in one language but not used or impossible in another

  - by Tungsten

  I often find myself working in unfamiliar languages. I like to read code written by others and then jump in and write something myself before going back and learning the corners of each language. To speed up this process, it really helps to know a few of the idioms you'll encounter ahead of time. Some of these, I've found are fairly unique. In Python you might do something like this: '\n'.join(listOfThings) Not all languages allow you to call methods on string literals like this. In C, you can write a loop like this: int i = 50; while(i--) { /* do something 50 times */ } C lets you decrement in the loop condition expression. Most more modern languages disallow this. Do you have any other good examples? I'm interested in often used constructions not odd corner cases.

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• How do you assign commands to keys in Terminal?

  - by NES

  Is there a solution to assign special key combinations to words in terminal use. For example the less command is very usefull and i use i a lot to pipe the output of another process through it. The idea would be to set up special key combinations that are only active in terminal use assigned to write different commands? So pressing CTRL + l in terminal window could write | less or CTRL + G could stand for | grep Note: i just mean adding the letters to commandline not execute the finally. A similar way what's tabcompletion but more specific.

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• What is testable code?

  - by Michael Freidgeim

  We are improving quality of code and trying to develop more unit tests. The question that developers asked  was  "How to make code testable ?"  From http://openmymind.net/2010/8/17/Write-testable-code-even-if-you-dont-write-tests/ First and foremost, its loosely coupled, taking advantage of dependency injection (and auto-wiring), composition and interface-programming. Testable code is also readable - meaning it leverages single responsibility principle and Liskov substitution principle.A few practical suggestions are listed in http://misko.hevery.com/code-reviewers-guide/More recommendations are in http://googletesting.blogspot.com/2008/08/by-miko-hevery-so-you-decided-to.htmlIt is slightly too theoretical - " the trick is translating these abstract concepts into concrete decisions in your code."

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• Application to organize / manage installed networks

  - by vicmp3

  I was wondering if there is a Application where you can organize networks. I mean if you have installed some networks you have to note every pc's name, his ip-address and so on. Is there a Application where you can manage it? I saw the monitoring tools but that is not exactly what I'm looking for. Maybe I didnt explain me well, after all my englis his not so good :) For example if I install many different networks I write in a book how I configured them. I write pc-name ip-address ip-gateway ip-broadcast and so on for each network. It will be great if I can do it in a program to organize it well, and for example it gives me a node view of the network.

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• DVD Drive Burner Not Working

  - by TheLastStego

  I'm attempting to burn Bodhi Linux to a blank DVD. It's a dual-layered DVD+R DL disc and my drive has burned to these discs before. I know bodhi will fit on a regular DVD or a CD but all I have at the moment is the dual layered DVDs. The computer I'm putting bodhi on doesn't support booting from USB either. When I try to write the bodhi iso to the DVD with xfburn, I get this error: http://i.stack.imgur.com/lxs0O.png I was able to burn to these exact DVDs about a week ago, preparing a video compilation using devede and xfburn. Using k3bm, I get an error saying "Failed To Write" and when using brasero (as a last attempt) I received the same error as with xfburn.

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• Is there industry demand for developers who have no GUI experience?

  - by James Jeffery

  Is there still demand for developers who crate software without GUI's in the industry? Are jobs still in demand? I only ask because I write a lot of software for myself in C. I mainly use FreeBSD without a GUI. My software is for data mining, automation and marketing purposes most of the time as this is the field I work in. I find that a GUI is not needed and I feel comfortable working within a console. I've never worked for a company as a programmer, but in the industry do you have dedicated programmers who work exclusively on the GUI's and other who write the logic?

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