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• Ubuntu live CD and installing new applications onto a USB drive

  - by bikesandcode

  Background: I am a programmer that occasionally has access to other computers when on vacation or something. These are generally the machines of friends or family, so randomly installing Ubuntu on it wouldn't be terribly polite. I would like to completely avoid the hard drive of the target machine. Not all of these machines can boot to USB either, so that simple solution is out. What I want to be able to do is boot to an Ubuntu live CD, plug in a USB drive and then grab various updates and other applications, installing them to the USB drive. Later, on another machine, put in the live CD, after boot, put in the USB drive and then magic, I have all of the updates/applications/data/etc that I've tossed onto the drive. I suspect that it should be possible to mount /home, /var, /usr, and maybe a couple of other locations from the USB drive or something along those lines. So is this possible and what do I need to do?

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• Specific cron at time point [closed]

  - by ARTI

  I have a very specific task, but can't handle it. I am not a programmer and totally n00b on bash scritps. So the question is, how to create a cron job like this: Script A.sh could be called at any time by hands, and it should create cron job to run script B.sh once at the nearest time point. For example I will have 4 time points: 10.00pm, 10.15pm, 10.30pm, 10.45pm. So if trigger a script A.sh at 10.07pm it should creat cron job to run ONCE script B.sh at 10.15h, because 10.15h is the nearest time point in future. Is it possible? How can I write such script A.sh? I use Centos 6 It is very important and urgent for me. Thank you very much.

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• Computer hanged in the middle of bios flashing process

  - by Stalker

  I have a laptop: Toshiba Satellite c660-17j, today I decided to update BIOS. I've downloaded bios updater from manufacturer's web site, and in the middle of flashing process computer hanged. I was waiting more than 30 minutes, but nothing was changed on the screen, i've tryed to PRESS MORE BUTTONS, but there were no reactions, so i've turned it off by removing battery (all other methods failed, even pressing power button for ~10 secs). After that computer can't start. I understand, that there's MESS in BIOS chip, and it's possible to re-flash it with hardware programmer, but I don't have it. I remember, that on some PCs (even on my eeepc) there was possibility to re-flash bios by inserting usb flash-disk (with .dat file on it, which contained BIOS), and power on PC, while holding some keys combination, then PC was switching to BIOS programming mode and re-flashed BIOS, after that it was possible to boot up normaly. Is there a way to recover computer without hardware programming BIOS chip? p.s. sorry for my english.

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• ubuntu server refusing connections via port forwarding

  - by Matt

  Getting some really weird behavior from our Ubuntu server... it's behind a Verizon router firewall with port forwarding (port 8080 to port 80 on the server), and we've been having issues accessing it via this external IP. From within the network, it appears to respond normally (I can access it via web browser and SSH), but refuses connections through port forwarding (using our static external IP). The strangest thing is that it actually responds to external port-forwarded connections right after being restarted, but quickly lapses back into this pattern of refusing external connections. I'm a bit of a server newbie (I'm actually a programmer in a small startup that just lost their server ops guy, urgh) so this is all trial by fire for me. Does anyone have any advice on what could be going wrong here? Any help would be appreciated, thanks.

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• Replace Certificate using Plesk 11

  - by Lambda Dusk

  I am not an admin, but a programmer. But how it is, if you're the only guy who knows about computers, everyone shoves those tasks to you. A certificate of a domain recently expired. The domains are managed using Plesk 11, on a Linux system, Apache2.2. I was given a new certificate from the host, and it is one single .pem file. However, Plesk asks me for a .crt file, a private key and some CA file. I have neither, only this single .pem file the host claims to be the certificate. Since I myself never did anything with SSL certificates, I would really appreciate if anyone can tell me what to do with this file and how to properly add a new one so the old one can be removed.

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• Simple CMS (separate files for multiple users) [closed]

  - by Pentium100

  I need a simple CMS software (or maybe it's called something else). There are many users (adding new users has to be simple as it will be done manually, no "sign up" link) and those users have to access (just download, no uploading or modification) some files. A file can be shown just to one user or a group of users (a user can belong to multiple groups). Upload a file and tag which users/groups can access it. This can probably be done with FTP, but HTTP would be better. Any software (preferable open source) that can do this without much modification? I can modify PHP code a bit, but I am not a programmer.

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• D-link Local wireless

  - by Filippo

  I created a wireless network inside a D-Link DIR-301 connected to a Mac, What I want is that every device to connect to this network if the browser automatically opens instead of the default homepage, it redirects to my website already set in the localhost of the machine which also has the router attached. I'd also like to see that instead of the IP to connect to the site, there will be a "fake" link. What do you advise me? how can I proceed? I state that I am a bit novice in this field, being more a web programmer.

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• What OS for Eee PC ?

  - by crivateos

  Hello. I've just bought new Eee PC 1005 (with Atom N450, 250GB and 2GB memory) without any pre-installed system. Now I'd like to install windows and linux distribution on in. What should I choose ? I am a programmer and web designer, so I need Java IDE , Python interpreters, and Photoshop (on windows). Will Win 7 Pro 32bit work ?Or should I choose Windows XP ? And what about linux distro ? Ubuntu, Eeebuntu, Ubuntu netbook edition ? btw is it true that linux's grub overrides mbr so that hardware system restore doesn't work ?

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• Does programmable hardware exist to allow hardware to be programmed by computers?

  - by agentbanks217

  I am a programmer and I have never really dealt with the hardware of anything, only software. I want to start building things that I can control from my computer using programming. My question is are there such devices on the market that have a programmable interface or API? For example, I want to build a automated window blinds opening/closing device, and I would like to be able to control it from my computer e.g. writing an app or some code to schedule them when to open and close. I would like to know if there are any devices that can be programmed to do that (the computer part)? Thanks!

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• Is there a way to undo deletion of registry keys while the machine is still running?

  - by Oliver Giesen

  [ also posted from a programmer's POV at http://stackoverflow.com/questions/3299230 ] I messed up big time and deleted a large portion of my registry during a programming experiment: As a result most of the contents of HKEY_CURRENT_USER\Software\ are gone. I haven't logged off or shutdown since this happened. The applications that were already running seem to be coping fine so far but I suspect that after the next reboot there won't be much happiness left... Also, System Restore tells me there are no restore points even though I'm pretty sure there should have been. Could this be another symptom of the purged registry? I wouldn't have expected this information to be stored under HKCU, though... Does anybody know of a technique or utility that can possibly restore some or all of the deleted entries? I'm on Windows 7 Enterprise 32bit. I'm not really holding my breath but you can always hope, can't you?

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• Windows 7 spins up HDD when files should be on SSD

  - by ZorroDeLaArena

  I run 64-bit Windows 7 Ultimate off a Corsair 12GB SSD (cmfssd-128gbg2d) and I've got two older HDDs I use for storing media. However even though the operating system and all the programs are installed on the SSD, frequently when I'm starting programs, I can hear the computer spin up one of the HDDs before the app starts and I'm not sure why (and I don't know which drive it is). For programs that should open very quickly - Programmer's Notepad, Calculator (the basic one that comes with Windows), etc. - having to wait several seconds sometimes can be pretty obnoxious. Avoiding wait times like that are why I got the SSD in the first place. Is there any way to tell why that's happening? I'm happy to provide more information but I'm not sure what's important. Any help would be really appreciated!

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• Installing Ubuntu on an External Drive

  - by Dom

  I am trying to install ububtu on an external drive. I am a programmer who wants to start using Linux. I downloaded the usb installer from the ubuntu website and followed all the steps. But when I get to the part where I have to setup the partitioning, it says an error when moving forward "No root file system is defined". I've been doing some research and I think that I have to partition the external drive but do not know how to do so. The problem is that I only want 20gb used from that external drive and let the rest be used for storage. I am also a musician and use Pro tools so I would like to keep all my files there, but I dont want ubuntu on my main hardrive since the external one is portable. I'd appreciate it also if you could provide me the steps.

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• Hide a 2nd Monitor from a Programs Print Screen

  - by jasondavis

  I run 2 monitors on a PC that also runs a program for the Freelancing site Elance.com. The program they provide, takes screenshots and uploads them to my account for a client to see at different intervals. My goal is to make the screenshot that the program takes and uploads, to somehow only take a shot of my "Main" or "Defualt" monitor and ignore my 2nd monitor. The main reason is my 2nd monitor generally has private data that I do not displayed to the world on a website. Does anyone know if there is any kind of program or trick I can use that will make it appear that I have 1 monitor when a Screenshot is taken? I am not sure how the program does it and how that works as I am a web developer and not a C++ or any kind of low level programmer. If the Elance program simply runs the same function that is called when a PrintScreen key is pressed on a keyboard, then I am thinking it might be possible to maybe trick that into only the default desktop? Any ideas or help would be appreciated, thank you

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• How do you hit modifier keys when touch typing?

  - by Bob Ueland

  I am a programmer and I want to learn to touch type. As all programmers know, using modifier keys like Control, Command and Alt are essential. When programming I think that every second or third word I use involves a modifier key. But most touch typing learning software do not address these keys, it is as if they do not exist. Not only do they not let you practice them, they do not even tell you which fingers to use to hit them. Actually there is a touch typing game that I use called StarTyper (http://lidenanna.com) that lets you practice modifier keys and even make up your own custom words containing modifier keys. But not even this game tells you which fingers to use when hitting the modifier keys. Has anybody addressed this problem. Or are there just homespun methods that work for one person but not for the other?

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• Dictionary-based text auto-completion in Windows (i.e. Mozilla Thunderbird e-mail client)?

  - by None

  Most programmer's text editors and IDEs have it, automatic completion of the first few characters (letters) of a keyword or function name. Also, most address bars or search fields feature this (like the tag input below the posting form). I would like the same for a few, often-occuring words in business correspondance. Since I could not find an extension for the application in question, Mozilla Thunderbird, I would like to know if there are applications or methods that suggest the complete words from a dictionary like sup per eruser erfluent PS: Here's an article on Wikipedia: Word completion Here's a product for $25: Type Booster Ideally, the solution is free.

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• Alternative to Xcode [closed]

  - by Moshe

  For those familiar with Windows, I used to use "Programmer's Notepad" and "TextPad". I want a Text Editor, not an IDE, with the following few features (in no particular order): Syntax Highlighting Tabbed editing Projects (groups of files together in one "project" file) Spellcheck Lightweight - I prefer something other than Xcode. Updates I am looking for something primarily for web development. Must be Free. +1 For relevant link(s). GUI Based only Conclusion I realized that gEdit is available for OS X. I met it back on Ubuntu 6. Something-or-other. We have a winner. all for input.

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• Books or other materials to overcome Linux learning curve?

  - by Marek Osvald

  I was born in 1989 and am an active Windows user since 1993. I've always struggled with Linux, not being able to configure the system the way I would like, snooping through blogs and forums for answers, never actually overcame the barrier. The books I've seen and read are either completely command line oriented (and don't get me wrong it's awesome to know this stuff when you're working on a server for example) but seems rather impractical to me on a desktop computer that's partially my development environment. The other kind are user manual describing step-by-step the controls of simplest applications like the Calculator, totally useless to me. What would you recommend for a programmer who needs to learn how to work with Linux but already knows the basics? What materials did you use to learn how to start with Linux?

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• Does multi-platter hard-drive use all of their heads to read simultaneously?

  - by WiSaGaN

  Suppose we have a harddisk with 2 platters with characteristics below: Rotational rate: 10, 000 RPM Avg sectors/track: 1000 Surfaces: 4 Sector size: 512 bytes I was reading "Computer Systems: A Programmer's Perspective 2ed" when I found that it calculates transfer time as if it only uses ONE head to read a sector. If that's the case, why not use 4 heads to write(read) on 4 surfaces? So when I write a 2K bytes file, each head should only need to wait for the platters to rotate just one sector length instead of 4, thus reducing the transfer time by a factor of 4. Or even redesign sector to make each sector on one cylinder but on 4 tracks residing same position respectively on 4 surfaces. Each one of (512/4) bytes. So when the hd needs to read a sector of 512 bytes, we only need the disk to rotate roughly 1/4 compare to original time. The idea looks like RAID 0.

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• Does programmable hardware exist to allow hardware to be programmed by computers?

  - by agentbanks217

  I am a programmer and I have never really dealt with the hardware of anything, only software. I want to start building things that I can control from my computer using programming. My question is are there such devices on the market that have a programmable interface or API? For example, I want to build an automated window blinds opening/closing device, and I would like to be able to control it from my computer e.g. writing an app or some code to schedule them when to open and close. I would like to know if there are any devices that can be programmed to do that (the computer part)?

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• Does the ulkJSON library have limitations when dealing with base64 in Delphi 7?

  - by Da Gopherboy

  I'm working on a project that is using Delphi 7 to consume RESTful services. We are creating and decoding JSON with the ulkJSON library. Up to this point I've been able to successfully build and send JSON containing a base64 string that exceed 5,160kb. I can verify that the base64 is being received by the services and verify the integrity of the base64 once its there. In addition to sending, I can also receive and successfully decode JSON with a smaller (~ 256KB or less) base64. However I am experiencing some issues on the return trip when larger (~1,024KB+) base64 is involved for some reason. Specifically when attempting to use the following JSON format and function combination: JSON: { "message" : "/9j/4AAQSkZJRgABAQEAYABgAAD...." } Function: function checkResults(JSONFormattedString: String): String; var jsonObject : TlkJSONObject; iteration : Integer; i : Integer; x : Integer; begin jsonObject := TlkJSONobject.Create; // Validate that the JSONFormatted string is not empty. // If it is empty, inform the user/programmer, and exit from this routine. if JSONFormattedString = '' then begin result := 'Error: JSON returned is Null'; jsonObject.Free; exit; end; // Now that we can validate that this string is not empty, we are going to // assume that the string is a JSONFormatted string and attempt to parse it. // // If the string is not a valid JSON object (such as an http status code) // throw an exception informing the user/programmer that an unexpected value // has been passed. And exit from this routine. try jsonObject := TlkJSON.ParseText(JSONFormattedString) as TlkJSONobject; except on e:Exception do begin result := 'Error: No JSON was received from web services'; jsonObject.Free; exit; end; end; // Now that the object has been parsed, lets check the contents. try result := jsonObject.Field['message'].value; jsonObject.Free; exit; except on e:Exception do begin result := 'Error: No Message received from Web Services '+e.message; jsonObject.Free; exit; end; end; end; As mentioned above when using the above function, I am able to get small (256KB and less) base64 strings out of the 'message' field of a JSON object. But for some reason if the received JSON is larger than say 1,024kb the following line seems to just stop in its tracks: jsonObject := TlkJSON.ParseText(JSONFormattedString) as TlkJSONobject; No errors, no results. Following the debugger, I can go into the library, and see that the JSON string being passed is not considered to be JSON despite being in the format listed above. The only difference I can find between calls that work as expected and calls that do not work as expect appears to be the size of base64 being transmitted. Am I missing something completely obvious and should be shot for my code implementation (very possible)? Have I missed some notation regarding the limitations of the ulkJSON library? Any input would be extremely helpful. Thanks in advance stack!

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• Summer Programming Plans

  - by Gabe

  I've wanted to start "hacking" for many months now. But I put it off in favor of school and other things. Now, though, I'm free for the summer and want to learn as much as I can. I have a rough idea of what I want to try my hand at, but need some guidance as to what specifically - and how - I should learn. This is my plan so far: 1) Get good at programming in general. I plan to read up on how to think/work like a programmer. I'm waiting for the Pragmatic Programmer to arrive, which will be the first book I read. Q: What other books/ebooks should I look at? What more can I do here? 2) Learn/Improve at HTML/CSS. My first project will be to make a personal website/blog for myself using HTML and CSS. ----Then I hope to write/design articles like Dustin Curtis. After I finish this (and learn a programming language) I'll try to create user-based a user-focused website. Q: It's my understanding that just trying to design/manage websites is a good way to learn/improve at HTML/CSS. Is that all correct? 3) Try music development. This might be a sort of stretch for stackoverflow, but I'm interested in mixing/making techno songs. (Think Justice, or Daft Punk, or MSTRKRFT.) Q: I have a Mac. Any ideas on how I could start/learn music making? Any programs I should download, for instance? 4) My main goal: Learning a web development language/framework. I'm a year into learning/using C++. But what I really want to do is develop websites and web apps. I've searched online, and there seems to be great debate over which language/framework to learn first (and which is best). I think I've narrowed it down to three: Ruby (Rails), Python (Django), and PHP (?). Q #1: Which should I learn and use first? (Reasons?) Q #2: One reason I was leaning towards PHP is that I'm taking a PHP development course next semester. Learning it now would make that course easy. If PHP was not the answer to Q #1, is it worth learning both? Or, would it be better to just focus on PHP for this summer and next semester, and then transition thereafter to a better language? 5) iPhone/iPad Programming (Maybe). I've a number of simple, useful app ideas that I'd like to eventually get too. I just bought a Mac, as well as a few app development books. Q #1: Am I spreading myself thin trying to learn all of the above, and objective-C? Q #2: How much harder/easier is objective-C compared to the above languages? Also, how easy is it to learn obj-C after learning a web development language (and some C++)? Q #3: Yes or no? Should I go for it, or just keeep with #1-4 for now? Also: If you have any tips on how I should learn (or how you learned to hack), I'm all ears. I'd be especially interested in how you planned out learning: did you just hack whenever you felt like it, or did you "study" the language a few hours a day, or something else? Thanks so much, guys.

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• How to write a Mork File Format file in Java?

  - by Sumit Ghosh

  Iam working on a project which involves writing a Mork File (Mork is a database format used by Mozilla to store url history and other information.) It has been replaced by an enhanced version of SQLite in latest Mozilla 3.0. Now I have the code for parsing a Mork File , but Iam struggling a bit with this part of the the file. <(A9=3)(81=)([email protected])(80=0)(85=2)(86=4ac18267)(83=1) (87=Mark)(88=Colbath)(89=Mark Colbath)([email protected])(8B [email protected])(8C=512-282-2509)(8D=+504-9907-1342)(8E=512-282-2510) (8F=512-282-2511)(90=512-282-2512)(91=Two Blocks Past Oxen Team)(92 =Villa Alicia)(93=Siguatepeque)(94=Comayagua)(95=NA)(96=Honduras) (97=9309 Heatherwood Dr)(98=Apartment 1)(99=Austin)(9A=TX)(9B=78748) (9C=USA)(9D=Programmer)(9E=Programming)(9F=MPC Solutions)(A0 =rentaprogrammer)(A1=http://www.mpcsol.com)(A2 =http://www.jesuslovesthelittlechildren.org)(A3=Hannah)(A4=John) (A5=Faith)(A6=Timothy)(A7=Some notes go here.)(A8 [email protected])> {1:^80 {(k^C0:c)(s=9)} [1:^82(^BF=3)] [1(^83=)(^84=)(^85=)(^86=)(^87=)(^88=)(^89^82)(^8A^82)(^8B=)(^8C=) (^8D=)(^8E=0)(^8F=2)(^90=0)(^91=)(^92=)(^93=)(^94=)(^95=)(^96=) (^97=)(^98=)(^99=)(^9A=)(^9B=)(^9C=)(^9D=)(^9E=)(^9F=)(^A0=)(^A1=) (^A2=)(^A3=)(^A4=)(^A5=)(^A6=)(^A7=)(^A8=)(^A9=)(^AA=)(^AB=)(^AC=) (^AD=)(^AE=)(^AF=)(^B0=)(^B1=)(^B2=)(^B3=)(^B4=)(^B5=)(^B6=)(^B7=) (^B8=)(^B9=)(^BA=)(^BB=)(^BC^86)(^BD=1)] [2(^83^87)(^84^88)(^85=)(^86=)(^87^89)(^88=)(^89^8A)(^8A^8A)(^8B^8B) (^8C=)(^8D=)(^8E=2)(^8F=0)(^90=1)(^91^8C)(^92^8D)(^93^8E)(^94^8F) (^95^90)(^96=)(^97=)(^98=)(^99=)(^9A=)(^9B^91)(^9C^92)(^9D^93)(^9E^94) (^9F=NA)(^A0^96)(^A1^97)(^A2^98)(^A3^99)(^A4=TX)(^A5^9B)(^A6^9C) (^A7^9D)(^A8^9E)(^A9^9F)(^AA^A0)(^AB=)(^AC=)(^AD=)(^AE=)(^AF=)(^B0=) (^B1=)(^B2^A1)(^B3^A2)(^B4=)(^B5=)(^B6=)(^B7^A3)(^B8^A4)(^B9^A5) (^BA^A6)(^BB^A7)(^BC=0)(^BD=2)] [3(^83=)(^84=)(^85=)(^86=)(^87=)(^88=)(^89^A8)(^8A^A8)(^8B=)(^8C=) (^8D=)(^8E=0)(^8F=0)(^90=0)(^91=)(^92=)(^93=)(^94=)(^95=)(^96=) (^97=)(^98=)(^99=)(^9A=)(^9B=)(^9C=)(^9D=)(^9E=)(^9F=)(^A0=)(^A1=) (^A2=)(^A3=)(^A4=)(^A5=)(^A6=)(^A7=)(^A8=)(^A9=)(^AA=)(^AB=)(^AC=) (^AD=)(^AE=)(^AF=)(^B0=)(^B1=)(^B2=)(^B3=)(^B4=)(^B5=)(^B6=)(^B7=) (^B8=)(^B9=)(^BA=)(^BB=)(^BC=0)(^BD=3)]} Can someone tell me how this part of the Mork file relates to the data given below? run: NickName=,LastModifiedDate=4ac18267,FaxNumberType=,BirthMonth=,LastName=,HomePhone=,WorkCountry=,HomePhoneType=,PreferMailFormat=0,CellularNumber=,FamilyName=,[email protected],AnniversaryMonth=,HomeCity=,WorkState=,HomeCountry=,PhoneticFirstName=,PhoneticLastName=,HomeState=,WorkAddress=,WebPage1=,WebPage2=,HomeAddress2=,WorkZipCode=,_AimScreenName=,AnniversaryYear=,WorkPhoneType=,Notes=,WorkAddress2=,WorkPhone=,Custom3=,Custom4=,Custom1=,Custom2=,PagerNumber=,AnniversaryDay=,WorkCity=,AllowRemoteContent=0,CellularNumberType=,FaxNumber=,PopularityIndex=2,FirstName=,SpouseName=,CardType=,Department=,Company=,HomeAddress=,BirthDay=,SecondEmail=,RecordKey=1,DisplayName=,DefaultEmail=,DefaultAddress=,BirthYear=,Category=,PagerNumberType=,[email protected],JobTitle=,HomeZipCode=, NickName=,LastModifiedDate=0,FaxNumberType=,BirthMonth=,LastName=Colbath,HomePhone=+504-9907-1342,WorkCountry=USA,HomePhoneType=,PreferMailFormat=2,CellularNumber=512-282-2512,FamilyName=,[email protected],AnniversaryMonth=,HomeCity=Siguatepeque,WorkState=TX,HomeCountry=Honduras,PhoneticFirstName=,PhoneticLastName=,HomeState=Comayagua,WorkAddress=9309 HeatherwoodDr,WebPage1=http://www.mpcsol.com,WebPage2=http://www.jesuslovesthelittlechildren.org,HomeAddress2=VillaAlicia,WorkZipCode=78748,_AimScreenName=rentaprogrammer,AnniversaryYear=,WorkPhoneType=,Notes=Some notes go here.,WorkAddress2=Apartment 1,WorkPhone=512-282-2509,Custom3=Faith,Custom4=Timothy,Custom1=Hannah,Custom2=John,PagerNumber=512-282-2511,AnniversaryDay=,WorkCity=Austin,AllowRemoteContent=1,CellularNumberType=,FaxNumber=512-282-2510,PopularityIndex=0,FirstName=Mark,SpouseName=,CardType=,Department=Programming,Company=MPC Solutions,HomeAddress=Two Blocks Past Oxen Team,BirthDay=,[email protected],RecordKey=2,DisplayName=Mark Colbath,DefaultEmail=,DefaultAddress=,BirthYear=,Category=,PagerNumberType=,[email protected],JobTitle=Programmer,HomeZipCode=NA, NickName=,LastModifiedDate=0,FaxNumberType=,BirthMonth=,LastName=,HomePhone=,WorkCountry=,HomePhoneType=,PreferMailFormat=0,CellularNumber=,FamilyName=,[email protected],AnniversaryMonth=,HomeCity=,WorkState=,HomeCountry=,PhoneticFirstName=,PhoneticLastName=,HomeState=,WorkAddress=,WebPage1=,WebPage2=,HomeAddress2=,WorkZipCode=,_AimScreenName=,AnniversaryYear=,WorkPhoneType=,Notes=,WorkAddress2=,WorkPhone=,Custom3=,Custom4=,Custom1=,Custom2=,PagerNumber=,AnniversaryDay=,WorkCity=,AllowRemoteContent=0,CellularNumberType=,FaxNumber=,PopularityIndex=0,FirstName=,SpouseName=,CardType=,Department=,Company=,HomeAddress=,BirthDay=,SecondEmail=,RecordKey=3,DisplayName=,DefaultEmail=,DefaultAddress=,BirthYear=,Category=,PagerNumberType=,[email protected],JobTitle=,HomeZipCode=, I have been breaking my head for almost 2 days now, please someone who is part of the mozilla team can help, it would be really appreciated.

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• How do I evaluate my skillset against the current market to see what needs improvement and where my

  - by baijajusav

  First of all, this question may be out of bounds for this site. If so, remove it. I say this because this site seems to be a place for more concrete questions that are not so relative in nature. And before I begin, for those of you whom just prefer a question and not this sort of dialog, here is my question: How can I assess my current skills as a programmer and decide where and what areas to improve upon? That said, here's what I'm asking/talking about, in essence. The market is always in constant flux. As programmers we're always having to learn new things, update our skills, push ourselves into that next project. There's not a very good litmus test that I know of for us to get an idea of where we stand as programmers. I came across this blog post by Jeff Atwood talking about why can't programmers code. Instinctively (and as the post goes on to state) I rushed through the program in about 4 minutes (most of that time was b/c I was hand writing it out. Still, this doesn't really answer the question of where do my skills need to be to succeed in today's world. I real blogs, listen to podcasts, try to keep up on the latest things coming out. It has only been in the past couple of months that I made a decision to pick a focus area for my learning as I can't learn everything and trying to do so is to spread myself too thin. I chose ASP.NET MVC & C#. I plan to stick with Microsoft technologies, not out of some sense of loyalty or stubbornness, but rather because they seem to stream together and have a unifying connection between them. With Windows Phone 7 coming out, it seems that now is the obvious time to pick up WPF and Silverlight as well. Still, if you asked me to code something apart from intellisense and the internet, I probably couldn't get the syntax right. I don't have libraries memorized or know precisely where the classes I use exist within the .Net framework, namely because I haven't had to pull that knowledge out of the air. In a way, I suppose Visual Studio has insulated me, which isn't a good thing, but, at the same time, I've still been able to be productive. I'm working on my own side project to try and help my learning. In doing so, I'm trying to make use of best practices and 3rd party frameworks where I can. I'm using automapper and EF 1.0. I know everyone in the .net community seems to cry foul at the sound of EF 1.0, but I can't say why because I've never used it. There's no lazy loading and that has proven rather annoying; however, aside from that, I haven't had that much of an issue. Granted this is probably because I'm not writing tests as I go (which I'm not doing because I don't know how to test EF in tests and don't really have a clue how to write tests for ASP.NET MVC 1.0). I'm also using a custom membership provider; granted, it's a barebone implementation, but I'm using it still. My thinking in all of this is, while I am neglecting a great many important technologies that are in the mainstream, I'll have a working project in the end. I can come back and add those things after I finish. Doing it all now and at once seems like too much. I know how I work and I don't think I'd ever get it done that way. I've elected to make this a community wiki as I think this question might fight better there. If a moderator disagrees with that choice or the decision to post this here, the just delete the question. I'm not trying to make undue work for anyone. I'm just a programmer trying to assess my where his skills are now and where I should be improving.

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• Better, simpler example of 'semantic conflict'?

  - by rhubbarb

  I like to distinguish three different types of conflict from a version control system (VCS): textual syntactic semantic A textual conflict is one that is detected by the merge or update process. This is flagged by the system. A commit of the result is not permitted by the VCS until the conflict is resolved. A syntactic conflict is not flagged by the VCS, but the result will not compile. Therefore this should also be picked up by even a slightly careful programmer. (A simple example might be a variable rename by Left and some added lines using that variable by Right. The merge will probably have an unresolved symbol. Alternatively, this might introduce a semantic conflict by variable hiding.) Finally, a semantic conflict is not flagged by the VCS, the result compiles, but the code may have problems running. In mild cases, incorrect results are produced. In severe cases, a crash could be introduced. Even these should be detected before commit by a very careful programmer, through either code review or unit testing. My example of a semantic conflict uses SVN (Subversion) and C++, but those choices are not really relevant to the essence of the question. The base code is: int i = 0; int odds = 0; while (i < 10) { if ((i & 1) != 0) { odds *= 10; odds += i; } // next ++ i; } assert (odds == 13579) The Left (L) and Right (R) changes are as follows. Left's 'optimisation' (changing the values the loop variable takes): int i = 1; // L int odds = 0; while (i < 10) { if ((i & 1) != 0) { odds *= 10; odds += i; } // next i += 2; // L } assert (odds == 13579) Right's 'optimisation' (changing how the loop variable is used): int i = 0; int odds = 0; while (i < 5) // R { odds *= 10; odds += 2 * i + 1; // R // next ++ i; } assert (odds == 13579) This is the result of a merge or update, and is not detected by SVN (which is correct behaviour for the VCS). int i = 1; // L int odds = 0; while (i < 5) // R { odds *= 10; odds += 2 * i + 1; // R // next i += 2; // L } assert (odds == 13579) The assert fails because odds is 37. So my question is as follows. Is there a simpler example than this? Is there a simple example where the compiled executable has a new crash? As a secondary question, are there cases of this that you have encountered in real code? Again, simple examples are especially welcome.

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• Xcode 3 or Xcode 4

  - by Randolf

  Hi. I'm starting to learn development for the mac (then I'll learn iOS development). I just buy an iOS developer program, and I see there are 2 IDEs available for download: Xcode 3.x and Xcode 4 (GM Status). So I don't know where to start. Site's says that Xcode 4 its now "integrated" so there is one app instead of 3, and that it's better for small screen because tabs and other features (I'm using a 13" macbook). But looking for books I see books only for 3.X. I'm a C# & .NET programmer, I know that the fundamental is the language and the framework (Cocoa) but I've been told that getting proficient with Mac Dev is getting proficient with Xcode. I think that if I start with Xcode 4, then I'll learn on the "next" IDE and since I have no hurry I can wait until apps made with Xcode 4 are deployable (on the app store). But, maybe I'm wrong and I should start with Xcode 3 and the largest set of books and references available. Any advice?

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