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  • Unable to write DVD-R(Blank DVD's)

    - by FrozenKing
    I have a problem in dvd drive i.e. It can read CD/DVD and can write CD and all CD/DVD-RW but cannot write DVD DVD drive model is SH-S203B Samsung; I also have a log file created by nero burning rom 11. Actually the fact is no Blank DVD's are being read in my dvd drive only previously written dvd's can be read! Is this the problem of OS or should I try cleaning the dvd drive or my DVD drive is 4yrs old so is it going to spoil now, since it is showing this type of symptoms! OS = WinXP AV = KIS 2012 DVD Drive = Samsung SH-S203B (Also tried latest firmware and downgrade versions also) IA32 Nero Version: 11.2.4.100 Internal Version: 11,2,4,100 Recorder: <TSSTcorp CDDVDW SH-S203B>Version: SB04 - HA 1 TA 0 - 11.2.4.100 Adapter driver: <Serial ATA> HA 1 Drive buffer : 2048kB Bus Type : via Inquiry data CD-ROM: <TSSTcorp CDDVDW SH-S203B >Version: SB04 - HA 1 TA 0 - 11.2.4.100 Adapter driver: <Serial ATA> HA 1 18:58:10 #37 SPTI -1511 File SCSIPassThrough.cpp, Line 224 CdRom0: SCSIStatus(x02) WinError(0) NeroError(-1511) CDB Data: 0x28 00 00 00 00 00 00 00 10 00 Sense Key: 0x04 (KEY_HARDWARE_ERROR) Sense Code: 0x3E Sense Qual: 0x02 Sense Area: 0x70 00 04 00 00 00 00 0A 00 00 00 00 3E 02 Buffer x08047340: Len x8000 18:58:10 #38 SectorVerify 20 File Cdrdrv.cpp, Line 12057 Read errors from sector 0 to 14 <Padding> 18:58:19 #39 SPTI -1511 File SCSIPassThrough.cpp, Line 224 CdRom0: SCSIStatus(x02) WinError(0) NeroError(-1511) CDB Data: 0x28 00 00 00 00 10 00 00 10 00 Sense Key: 0x04 (KEY_HARDWARE_ERROR) Sense Code: 0x3E Sense Qual: 0x02 Sense Area: 0x70 00 04 00 00 00 00 0A 00 00 00 00 3E 02 Buffer x08047340: Len x8000 18:58:19 #40 SectorVerify 21 File Cdrdrv.cpp, Line 12057 Read error at sector 15 <Virtual Multisession Info> 18:58:19 #41 SectorVerify 20 File Cdrdrv.cpp, Line 12057 Read errors from sector 16 to 18 <Volume Structure Descriptor Sequence> 18:58:28 #42 SPTI -1511 File SCSIPassThrough.cpp, Line 224 CdRom0: SCSIStatus(x02) WinError(0) NeroError(-1511) CDB Data: 0x28 00 00 00 00 20 00 00 10 00 Sense Key: 0x04 (KEY_HARDWARE_ERROR) Sense Code: 0x3E Sense Qual: 0x02 Sense Area: 0x70 00 04 00 00 00 00 0A 00 00 00 00 3E 02 Buffer x08047340: Len x8000

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  • Pip installs on Archlinux fails to build egg

    - by stmfunk
    I was trying to install nltk on my Archlinux server but it repeatedly fails with the following error output /usr/lib/python3.3/distutils/dist.py:257: UserWarning: Unknown distribution option: 'entry_points' warnings.warn(msg) /usr/lib/python3.3/distutils/dist.py:257: UserWarning: Unknown distribution option: 'zip_safe' warnings.warn(msg) /usr/lib/python3.3/distutils/dist.py:257: UserWarning: Unknown distribution option: 'test_suite' warnings.warn(msg) usage: setup.py [global_opts] cmd1 [cmd1_opts] [cmd2 [cmd2_opts] ...] or: setup.py --help [cmd1 cmd2 ...] or: setup.py --help-commands or: setup.py cmd --help error: invalid command 'bdist_egg' /tmp/pip_build_root/nltk/distribute-0.6.21-py3.3.egg Traceback (most recent call last): File "./distribute_setup.py", line 143, in use_setuptools raise ImportError ImportError During handling of the above exception, another exception occurred: Traceback (most recent call last): File "", line 16, in File "/tmp/pip_build_root/nltk/setup.py", line 23, in distribute_setup.use_setuptools() File "./distribute_setup.py", line 145, in use_setuptools return _do_download(version, download_base, to_dir, download_delay) File "./distribute_setup.py", line 125, in _do_download _build_egg(egg, tarball, to_dir) File "./distribute_setup.py", line 116, in _build_egg raise IOError('Could not build the egg.') OSError: Could not build the egg. ---------------------------------------- Cleaning up... Command python setup.py egg_info failed with error code 1 in /tmp/pip_build_root/nltk Storing complete log in /root/.pip/pip.log This error is also occurring for matplotlib buts thats the only other library I found it to fail on so far. pyyaml installs fine. The install works perfectly under virtualenv on my mac which is using python 2.7 but the server is using python 3.3. Any help is appreciated.

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  • How to create a new background process in a KSH "while read" loop?

    - by yael
    The following test script has a problem. When I add the line (sleep 5 ) & in the script then the "while read" loop does not read all lines from the file, but only prints the first line. But when I remove the ( sleep 5 ) & from the script, then the script prints all lines as defined in the file. Why the ( sleep 5 ) & causes this? And how to solve the problem? I want to create a new process (for which the sleep is just an example) in the while loop: $ more test #!/bin/ksh while read -r line ; do echo Read a line: echo $line ( sleep 5 )& RESULT=$! echo Started background sleep with process id $RESULT sleep 1 echo Slept for a second kill $RESULT echo Killed background sleep with process id $RESULT done < file echo Completed On my Linux, when using the following contents of file: $ more file 123 aaa 234 bbb 556 ccc ...running ./test just gives me: Read a line: 123 aaa Started background sleep with process id 4181 Slept for a second Killed background sleep with process id 4181 Completed

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  • web.config file changings guide

    - by Student
    Hi experts how are you all? i am student, and learning asp.net c# visual studio 2010 with using sql server 2005. I have developed a website which has database. I developed this website with self studies taking help from internet. the website is completed and working perfectly in my computer. I have hosting server and domain name registered already. the problem is when I upload my website it doesn't work there the following error displays: Server Error in '/' Application. Configuration Error Description: An error occurred during the processing of a configuration file required to service this request. Please review the specific error details below and modify your configuration file appropriately. Parser Error Message: Unrecognized attribute 'targetFramework'. Note that attribute names are case-sensitive. Source Error: Line 11: <system.web> Line 12: <customErrors mode="Off" /> Line 13: <compilation debug="false" targetFramework="4.0"/> Line 14: </system.web> Line 15: </configuration> Source File: C:\Inetpub\vhosts\urdureport.com\httpdocs\web.config Line: 13 Version Information: Microsoft .NET Framework Version:2.0.50727.5472; ASP.NET Version:2.0.50727.5474 I don't know what should I do to get it work on hosting server please help me in this regard that what should I do with this. Thank you in advance

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  • Why is cron mailing me program output even though I've redirected to /dev/null?

    - by Server Fault
    I'm trying to restart a system process through cron and getting emailed the startup output of the process. I thought redirecting STDOUT and SDTERR to /dev/null would "silence" the output but alas, this has not work. How can I get cron to silently restart this service? crontab entry: 0 6 * * * service sympa stop &>/dev/null; service sympa start &> /dev/null sample output from restart email: Stopping Sympa bounce manager bounced ...done. * Stopping Sympa task manager task_manager ...done. * Stopping Sympa mailing list archive manager archived ...done. * Stopping Sympa mailing list manager sympa ...done. ... waiting Prototype mismatch: sub Lock::LOCK_SH () vs none at /home/sympa/bin/Lock.pm line 38. Constant subroutine LOCK_SH redefined at /home/sympa/bin/Lock.pm line 38. Prototype mismatch: sub Lock::LOCK_EX () vs none at /home/sympa/bin/Lock.pm line 39. Constant subroutine LOCK_EX redefined at /home/sympa/bin/Lock.pm line 39. Prototype mismatch: sub Lock::LOCK_NB () vs none at /home/sympa/bin/Lock.pm line 40. Constant subroutine LOCK_NB redefined at /home/sympa/bin/Lock.pm line 40.

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  • SSH Keys Authentication keeps asking for password

    - by Rhyuk
    Im trying to set access from ServerA(SunOS) to ServerB(Some custom Linux with Keyboard Interactive login) with SSH Keys. As a proof of concept I was able to do it between 2 virtual machines. Now in my real life scenario it isnt working. I created the keys in ServerA, copied them to ServerB, chmod'd .ssh folders to 700 on both ServerA,B. Here is the log of what I get. debug1: SSH2_MSG_KEXINIT sent debug1: SSH2_MSG_KEXINIT received debug1: kex: server->client aes128-ctr hmac-md5 none debug1: kex: client->server aes128-ctr hmac-md5 none debug1: Peer sent proposed langtags, ctos: debug1: Peer sent proposed langtags, stoc: debug1: We proposed langtags, ctos: en-US debug1: We proposed langtags, stoc: en-US debug1: SSH2_MSG_KEX_DH_GEX_REQUEST sent debug1: expecting SSH2_MSG_KEX_DH_GEX_GROUP debug1: dh_gen_key: priv key bits set: 125/256 debug1: bits set: 1039/2048 debug1: SSH2_MSG_KEX_DH_GEX_INIT sent debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY debug1: Host 'XXX.XXX.XXX.XXX' is known and matches the RSA host key. debug1: Found key in /XXX/.ssh/known_hosts:1 debug1: bits set: 1061/2048 debug1: ssh_rsa_verify: signature correct debug1: newkeys: mode 1 debug1: set_newkeys: setting new keys for 'out' mode debug1: SSH2_MSG_NEWKEYS sent debug1: expecting SSH2_MSG_NEWKEYS debug1: newkeys: mode 0 debug1: set_newkeys: setting new keys for 'in' mode debug1: SSH2_MSG_NEWKEYS received debug1: done: ssh_kex2. debug1: send SSH2_MSG_SERVICE_REQUEST debug1: got SSH2_MSG_SERVICE_ACCEPT debug1: Authentications that can continue: publickey,keyboard-interactive debug1: Next authentication method: publickey debug1: Trying private key: /XXXX/.ssh/identity debug1: Trying public key: /xxx/.ssh/id_rsa debug1: Authentications that can continue: publickey,keyboard-interactive debug1: Trying private key: /xxx/.ssh/id_dsa debug1: Next authentication method: keyboard-interactive Password: Password: ServerB has pretty limited actions since its a custom propietary linux. What could be happening? EDIT WITH ANSWER: Problem was that I didnt have those settings enabled in the sshd_config (Refer to accepted answer) AND that while pasting the key from ServerA to ServerB it would interpret the key as 3 separate lines. What I did was, in case you cant use ssh-copy-id like I couldnt. Paste the first line of your key in your "ServerB" authorized_keys file WITHOUT the last 2 characters, then type yourself the missing characters from line 1 and the first one from line 2, this will prevent adding a "new line" between the first and second line of the key. Repeat with the 3d line.

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  • How to correctly set GNU Screen to display currently running program in hardstatus

    - by johnny_bgoode
    I posted this question on SuperUser but it's hardly getting any views, so I thought I'd ask here as well. In bash, to display the name of the current program in the GNU Screen hardstatus line takes only two configuration lines. First, tell screen what the end of your prompt normally looks like, and supply a default title for a window when you are sitting at in the shell: shelltitle "$ |bash" Next, place this escape sequence in the PS1 variable, before the characters that normally terminate the prompt '$ ' in this case: \033k\033\\\ This technique works, to a point. The hardstatus window title is updated to the name of the currently running program, and then switches back to the default title shortly after execution is finished. One major problem, however, is that this escape string is not escaped itself, causing line-wrapping problems with commands longer than the initial line. This was annoying, so I set out looking for a solution. Turns out, simply escaping the previous escape sequence corrects line wrapping: [\033k]\[\033\\\] Great! My hardstatus window title still updates to the name of the currently running program, and now my longer commands wrap to the second line correctly. However, with this new escape sequence in my PS1, screen updates the window title to the actual command I am typing, not simply the name of the current program once it is executed. I am wondering, has anyone gotten this working correctly - i.e. line wrapping and proper updating of the hardstatus window title? Thanks!

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  • How to correctly set GNU Screen to display currently running program in hardstatus

    - by johnny_bgoode
    In bash, to display the name of the current program in the GNU Screen hardstatus line takes only two configuration lines. First, tell screen what the end of your prompt normally looks like, and supply a default title for a window when you are sitting at in the shell: shelltitle "$ |bash" Next, place this escape sequence in the PS1 variable, before the characters that normally terminate the prompt '$ ' in this case: \033k\033\\ This technique works, to a point. The hardstatus window title is updated to the name of the currently running program, and then switches back to the default title shortly after execution is finished. One major problem, however, is that this escape string is not escaped itself, causing line-wrapping problems with commands longer than the initial line. This was annoying, so I set out looking for a solution. Turns out, simply escaping the previous escape sequence corrects line wrapping: \[\033k\]\[\033\\\] Great! My hardstatus window title still updates to the name of the currently running program, and now my longer commands wrap to the second line correctly. However, with this new escape sequence in my PS1, screen updates the window title to the actual command I am typing, not simply the name of the current program once it is executed. I am wondering, has anyone gotten this working correctly - i.e. line wrapping and proper updating of the hardstatus window title?

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  • Determine which user initiated call in Asterisk

    - by adaptive
    I had the following code in my extensions.conf file: [local] exten => _NXXNXXXXXX,1,Set(CALLERID(name)=${OUTGOING_NAME}) exten => _NXXNXXXXXX,n,Set(CALLERID(num)=${OUTGOING_NUMBER}) Now I want to change this code to set the CallerID and number based on the user/extension that is making the call. In fact I have four(4) users/extensions in my sip.conf and only one of them (the one I use for business) is supposed to send a different caller id/number. Everything is in the same context (for simplicity) since all lines need to be able to pick up an incoming call. The only difference is when line1 needs to make a call, it has to send a different caller id/number and use a different provider. This is what I have so far: [local] exten => _NXXNXXXXXX,1,Set(line=${SIP_HEADER(From)}) exten => _NXXNXXXXXX,n,Verbose(line variable is <${line}>) exten => _NXXNXXXXXX,n,Set(CALLERID(name)=${IF($[ ${line} = line1 ]?${COMPANY_NAME}:${FAMILY_NAME})}) exten => _NXXNXXXXXX,n,Set(CALLERID(num)=${IF($[ ${line} = line1 ]?${COMPANY_NUMBER}:${FAMILY_NUMBER})}) exten => _NXXNXXXXXX,n,Dial(${IF($[ ${line} = line1]?SIP/${EXTEN}@${COMPANY_PROVIDER}:SIP/${EXTEN}@${FAMILY_PROVIDER})}) I really don't know if this is correct and I'm afraid to commit these changes to my extensions.conf before validating. Any help will be greatly appreciated.

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  • Setting up SSO in ADF Security-enabled application

    - by Dmitry Nefedkin
    I'm continuing a series of post/videos regarding  the setting up ADF applications in the real world. This time I'm going to present how to set up Single Sign-On (SSO) and Single Logout (SLO) for ADF application using Oracle Access Manager 11g.  In this 40-min video we are going to explore the following topics: Review the demo environment; Install Oracle HTTP Server 11g (OHS) instance as a reverse proxy for Oracle Weblogic Server; Install OAM 11g Web Gate inside OHS; Modify and redeploy the ADF application for use with OAM; Configure OAM Identity Asserter in ADF domain; Configure single logout (SLO); Test SSO and SLO  

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  • Using idle time in turn-based (RPG) games for updating

    - by The Communist Duck
    If you take any turn based RPG game there will be large periods of time when nothing is happening because the game is looping over 'wait_for_player_input'. Naturally it seems sensible to use this time to update things. However, this immediately seems to suggest that it would need to be threaded. Is this sort of design possible in a single thread? loop: if not check_something_pressed: update_a_very_small_amount else keep going But if we says 'a_very_small_amount' is only updating a single object each loop, it's going to be very slow at updating. How would you go about this, preferably in a single thread? EDIT: I've tagged this language-agnostic as that seems the sensible thing, though anything more specific to Python would be great. ;-)

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  • Informed TDD &ndash; Kata &ldquo;To Roman Numerals&rdquo;

    - by Ralf Westphal
    Originally posted on: http://geekswithblogs.net/theArchitectsNapkin/archive/2014/05/28/informed-tdd-ndash-kata-ldquoto-roman-numeralsrdquo.aspxIn a comment on my article on what I call Informed TDD (ITDD) reader gustav asked how this approach would apply to the kata “To Roman Numerals”. And whether ITDD wasn´t a violation of TDD´s principle of leaving out “advanced topics like mocks”. I like to respond with this article to his questions. There´s more to say than fits into a commentary. Mocks and TDD I don´t see in how far TDD is avoiding or opposed to mocks. TDD and mocks are orthogonal. TDD is about pocess, mocks are about structure and costs. Maybe by moving forward in tiny red+green+refactor steps less need arises for mocks. But then… if the functionality you need to implement requires “expensive” resource access you can´t avoid using mocks. Because you don´t want to constantly run all your tests against the real resource. True, in ITDD mocks seem to be in almost inflationary use. That´s not what you usually see in TDD demonstrations. However, there´s a reason for that as I tried to explain. I don´t use mocks as proxies for “expensive” resource. Rather they are stand-ins for functionality not yet implemented. They allow me to get a test green on a high level of abstraction. That way I can move forward in a top-down fashion. But if you think of mocks as “advanced” or if you don´t want to use a tool like JustMock, then you don´t need to use mocks. You just need to stand the sight of red tests for a little longer ;-) Let me show you what I mean by that by doing a kata. ITDD for “To Roman Numerals” gustav asked for the kata “To Roman Numerals”. I won´t explain the requirements again. You can find descriptions and TDD demonstrations all over the internet, like this one from Corey Haines. Now here is, how I would do this kata differently. 1. Analyse A demonstration of TDD should never skip the analysis phase. It should be made explicit. The requirements should be formalized and acceptance test cases should be compiled. “Formalization” in this case to me means describing the API of the required functionality. “[D]esign a program to work with Roman numerals” like written in this “requirement document” is not enough to start software development. Coding should only begin, if the interface between the “system under development” and its context is clear. If this interface is not readily recognizable from the requirements, it has to be developed first. Exploration of interface alternatives might be in order. It might be necessary to show several interface mock-ups to the customer – even if that´s you fellow developer. Designing the interface is a task of it´s own. It should not be mixed with implementing the required functionality behind the interface. Unfortunately, though, this happens quite often in TDD demonstrations. TDD is used to explore the API and implement it at the same time. To me that´s a violation of the Single Responsibility Principle (SRP) which not only should hold for software functional units but also for tasks or activities. In the case of this kata the API fortunately is obvious. Just one function is needed: string ToRoman(int arabic). And it lives in a class ArabicRomanConversions. Now what about acceptance test cases? There are hardly any stated in the kata descriptions. Roman numerals are explained, but no specific test cases from the point of view of a customer. So I just “invent” some acceptance test cases by picking roman numerals from a wikipedia article. They are supposed to be just “typical examples” without special meaning. Given the acceptance test cases I then try to develop an understanding of the problem domain. I´ll spare you that. The domain is trivial and is explain in almost all kata descriptions. How roman numerals are built is not difficult to understand. What´s more difficult, though, might be to find an efficient solution to convert into them automatically. 2. Solve The usual TDD demonstration skips a solution finding phase. Like the interface exploration it´s mixed in with the implementation. But I don´t think this is how it should be done. I even think this is not how it really works for the people demonstrating TDD. They´re simplifying their true software development process because they want to show a streamlined TDD process. I doubt this is helping anybody. Before you code you better have a plan what to code. This does not mean you have to do “Big Design Up-Front”. It just means: Have a clear picture of the logical solution in your head before you start to build a physical solution (code). Evidently such a solution can only be as good as your understanding of the problem. If that´s limited your solution will be limited, too. Fortunately, in the case of this kata your understanding does not need to be limited. Thus the logical solution does not need to be limited or preliminary or tentative. That does not mean you need to know every line of code in advance. It just means you know the rough structure of your implementation beforehand. Because it should mirror the process described by the logical or conceptual solution. Here´s my solution approach: The arabic “encoding” of numbers represents them as an ordered set of powers of 10. Each digit is a factor to multiply a power of ten with. The “encoding” 123 is the short form for a set like this: {1*10^2, 2*10^1, 3*10^0}. And the number is the sum of the set members. The roman “encoding” is different. There is no base (like 10 for arabic numbers), there are just digits of different value, and they have to be written in descending order. The “encoding” XVI is short for [10, 5, 1]. And the number is still the sum of the members of this list. The roman “encoding” thus is simpler than the arabic. Each “digit” can be taken at face value. No multiplication with a base required. But what about IV which looks like a contradiction to the above rule? It is not – if you accept roman “digits” not to be limited to be single characters only. Usually I, V, X, L, C, D, M are viewed as “digits”, and IV, IX etc. are viewed as nuisances preventing a simple solution. All looks different, though, once IV, IX etc. are taken as “digits”. Then MCMLIV is just a sum: M+CM+L+IV which is 1000+900+50+4. Whereas before it would have been understood as M-C+M+L-I+V – which is more difficult because here some “digits” get subtracted. Here´s the list of roman “digits” with their values: {1, I}, {4, IV}, {5, V}, {9, IX}, {10, X}, {40, XL}, {50, L}, {90, XC}, {100, C}, {400, CD}, {500, D}, {900, CM}, {1000, M} Since I take IV, IX etc. as “digits” translating an arabic number becomes trivial. I just need to find the values of the roman “digits” making up the number, e.g. 1954 is made up of 1000, 900, 50, and 4. I call those “digits” factors. If I move from the highest factor (M=1000) to the lowest (I=1) then translation is a two phase process: Find all the factors Translate the factors found Compile the roman representation Translation is just a look-up. Finding, though, needs some calculation: Find the highest remaining factor fitting in the value Remember and subtract it from the value Repeat with remaining value and remaining factors Please note: This is just an algorithm. It´s not code, even though it might be close. Being so close to code in my solution approach is due to the triviality of the problem. In more realistic examples the conceptual solution would be on a higher level of abstraction. With this solution in hand I finally can do what TDD advocates: find and prioritize test cases. As I can see from the small process description above, there are two aspects to test: Test the translation Test the compilation Test finding the factors Testing the translation primarily means to check if the map of factors and digits is comprehensive. That´s simple, even though it might be tedious. Testing the compilation is trivial. Testing factor finding, though, is a tad more complicated. I can think of several steps: First check, if an arabic number equal to a factor is processed correctly (e.g. 1000=M). Then check if an arabic number consisting of two consecutive factors (e.g. 1900=[M,CM]) is processed correctly. Then check, if a number consisting of the same factor twice is processed correctly (e.g. 2000=[M,M]). Finally check, if an arabic number consisting of non-consecutive factors (e.g. 1400=[M,CD]) is processed correctly. I feel I can start an implementation now. If something becomes more complicated than expected I can slow down and repeat this process. 3. Implement First I write a test for the acceptance test cases. It´s red because there´s no implementation even of the API. That´s in conformance with “TDD lore”, I´d say: Next I implement the API: The acceptance test now is formally correct, but still red of course. This will not change even now that I zoom in. Because my goal is not to most quickly satisfy these tests, but to implement my solution in a stepwise manner. That I do by “faking” it: I just “assume” three functions to represent the transformation process of my solution: My hypothesis is that those three functions in conjunction produce correct results on the API-level. I just have to implement them correctly. That´s what I´m trying now – one by one. I start with a simple “detail function”: Translate(). And I start with all the test cases in the obvious equivalence partition: As you can see I dare to test a private method. Yes. That´s a white box test. But as you´ll see it won´t make my tests brittle. It serves a purpose right here and now: it lets me focus on getting one aspect of my solution right. Here´s the implementation to satisfy the test: It´s as simple as possible. Right how TDD wants me to do it: KISS. Now for the second equivalence partition: translating multiple factors. (It´a pattern: if you need to do something repeatedly separate the tests for doing it once and doing it multiple times.) In this partition I just need a single test case, I guess. Stepping up from a single translation to multiple translations is no rocket science: Usually I would have implemented the final code right away. Splitting it in two steps is just for “educational purposes” here. How small your implementation steps are is a matter of your programming competency. Some “see” the final code right away before their mental eye – others need to work their way towards it. Having two tests I find more important. Now for the next low hanging fruit: compilation. It´s even simpler than translation. A single test is enough, I guess. And normally I would not even have bothered to write that one, because the implementation is so simple. I don´t need to test .NET framework functionality. But again: if it serves the educational purpose… Finally the most complicated part of the solution: finding the factors. There are several equivalence partitions. But still I decide to write just a single test, since the structure of the test data is the same for all partitions: Again, I´m faking the implementation first: I focus on just the first test case. No looping yet. Faking lets me stay on a high level of abstraction. I can write down the implementation of the solution without bothering myself with details of how to actually accomplish the feat. That´s left for a drill down with a test of the fake function: There are two main equivalence partitions, I guess: either the first factor is appropriate or some next. The implementation seems easy. Both test cases are green. (Of course this only works on the premise that there´s always a matching factor. Which is the case since the smallest factor is 1.) And the first of the equivalence partitions on the higher level also is satisfied: Great, I can move on. Now for more than a single factor: Interestingly not just one test becomes green now, but all of them. Great! You might say, then I must have done not the simplest thing possible. And I would reply: I don´t care. I did the most obvious thing. But I also find this loop very simple. Even simpler than a recursion of which I had thought briefly during the problem solving phase. And by the way: Also the acceptance tests went green: Mission accomplished. At least functionality wise. Now I´ve to tidy up things a bit. TDD calls for refactoring. Not uch refactoring is needed, because I wrote the code in top-down fashion. I faked it until I made it. I endured red tests on higher levels while lower levels weren´t perfected yet. But this way I saved myself from refactoring tediousness. At the end, though, some refactoring is required. But maybe in a different way than you would expect. That´s why I rather call it “cleanup”. First I remove duplication. There are two places where factors are defined: in Translate() and in Find_factors(). So I factor the map out into a class constant. Which leads to a small conversion in Find_factors(): And now for the big cleanup: I remove all tests of private methods. They are scaffolding tests to me. They only have temporary value. They are brittle. Only acceptance tests need to remain. However, I carry over the single “digit” tests from Translate() to the acceptance test. I find them valuable to keep, since the other acceptance tests only exercise a subset of all roman “digits”. This then is my final test class: And this is the final production code: Test coverage as reported by NCrunch is 100%: Reflexion Is this the smallest possible code base for this kata? Sure not. You´ll find more concise solutions on the internet. But LOC are of relatively little concern – as long as I can understand the code quickly. So called “elegant” code, however, often is not easy to understand. The same goes for KISS code – especially if left unrefactored, as it is often the case. That´s why I progressed from requirements to final code the way I did. I first understood and solved the problem on a conceptual level. Then I implemented it top down according to my design. I also could have implemented it bottom-up, since I knew some bottom of the solution. That´s the leaves of the functional decomposition tree. Where things became fuzzy, since the design did not cover any more details as with Find_factors(), I repeated the process in the small, so to speak: fake some top level, endure red high level tests, while first solving a simpler problem. Using scaffolding tests (to be thrown away at the end) brought two advantages: Encapsulation of the implementation details was not compromised. Naturally private methods could stay private. I did not need to make them internal or public just to be able to test them. I was able to write focused tests for small aspects of the solution. No need to test everything through the solution root, the API. The bottom line thus for me is: Informed TDD produces cleaner code in a systematic way. It conforms to core principles of programming: Single Responsibility Principle and/or Separation of Concerns. Distinct roles in development – being a researcher, being an engineer, being a craftsman – are represented as different phases. First find what, what there is. Then devise a solution. Then code the solution, manifest the solution in code. Writing tests first is a good practice. But it should not be taken dogmatic. And above all it should not be overloaded with purposes. And finally: moving from top to bottom through a design produces refactored code right away. Clean code thus almost is inevitable – and not left to a refactoring step at the end which is skipped often for different reasons.   PS: Yes, I have done this kata several times. But that has only an impact on the time needed for phases 1 and 2. I won´t skip them because of that. And there are no shortcuts during implementation because of that.

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  • Multiple Object Instantiation

    - by Ricky Baby
    I am trying to get my head around object oriented programming as it pertains to web development (more specifically PHP). I understand inheritance and abstraction etc, and know all the "buzz-words" like encapsulation and single purpose and why I should be doing all this. But my knowledge is falling short with actually creating objects that relate to the data I have in my database, creating a single object that a representative of a single entity makes sense, but what are the best practises when creating 100, 1,000 or 10,000 objects of the same type. for instance, when trying to display a list of the items, ideally I would like to be consistent with the objects I use, but where exactly should I run the query/get the data to populate the object(s) as running 10,000 queries seems wasteful. As an example, say I have a database of cats, and I want a list of all black cats, do I need to set up a FactoryObject which grabs the data needed for each cat from my database, then passes that data into each individual CatObject and returns the results in a array/object - or should I pass each CatObject it's identifier and let it populate itself in a separate query.

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  • Storing Attendance Data in database

    - by Ali Abbas
    So i have to store daily attendance of employees of my organisation from my application . The part where I need some help is, the efficient way to store attendance data. After some research and brain storming I came up with some approaches . Could you point me out which one is the best and any unobvious ill effects of the mentioned approaches. The approaches are as follows Create a single table for whole organisation and store empid,date,presentstatus as a row for every employee everyday. Create a single table for whole organisation and store a single row for each day with a comma delimited string of empids which are absent. I will generate the string on my application. Create different tables for each department and follow the 1 method. Please share your views and do mention any other good methods

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  • The New My Oracle Support User Interface (HTML-based)

    - by user793553
    A single source for learning about the latest enhancements to the My Oracle Support User Interface... On January 27, 2012, we launched a new My Oracle Support HTML-based user interface (UI). The new user interface is built using Oracle’s Application Development Framework and is our first step towards providing a single online support portal for our customers and partners; one that all users will transition to in the coming months. Further enhancements to the HTML-based user interface are planned for April 13, 2012. We will transition users of the standard Flash-based interface in the coming months. To help facilitate a smooth transition, we invite you to preview and begin using the new My Oracle Support interface by going to supporthtml.oracle.com and sign in using your Single Sign-on username and password For full information regarding functionality, supported browsers and links to quick and easy videos on how to navigate the new UI, please check out Doc ID 1385682.1 

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  • When designing a job queue, what should determine the scope of a job?

    - by Stuart Pegg
    We've got a job queue system that'll cheerfully process any kind of job given to it. We intend to use it to process jobs that each contain 2 tasks: Job (Pass information from one server to another) Fetch task (get the data, slowly) Send task (send the data, comparatively quickly) The difficulty we're having is that we don't know whether to break the tasks into separate jobs, or process the job in one go. Are there any best practices or useful references on this subject? Is there some obvious benefit to a method that we're missing? So far we can see these benefits for each method: Split Job lease length reflects job length: Rather than total of two Finer granularity on recovery: If we lose outgoing connectivity we can tell them all to retry The starting state of the second task is saved to job history: Helps with debugging (although similar logging could be added in single task method) Single Single job to be scheduled: Less processing overhead Data not stale on recovery: If the outgoing downtime is quite long, the pending Send jobs could be outdated

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  • Modern workflow / project architecture with PHP

    - by Sprottenwels
    I wonder how one professional developer would design the backend-part of his application. I try to use PHP as seldom as possible and only for data serving/saving purposes. To do so, i would create a module/class for every greater part of my application, then write some single script files which are called by javascript. E.g: User clicks a "retrieve data" button javascript will call retrieveData.php retrieveData.php will create an instance of the needed class, then executes myInstance-retrieve() the data is returned to my JS by retrieveData.php However, i see some disadvantages in this practice: I will need a single scipt file for every action, (e.g retrieveData.php, saveData.php etc) I need a man-in-the-middle step: from JS to my single script, to my classes How are modern applications designed to accomplish what i need to do?

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  • 12.04 x64 Server Login Failure

    - by ThoughtCoder
    After some serious GRUB issues after routine kernel updates, forcing a grub-reinstall via chroot and some single-user mode maintenance, I now cannot login to my server (except via single-user mode) When attempting to SSH to the server my connection is reset immediately after entering username - no password prompt is presented. I've plugged in my monitor and keyboard to the headless server and when trying to login I receive: login: "PAM Failure, aborting: Critical error - immediate abort" immediately after entering my username - again, no password prompt is displayed. I am able to gain access via kernel recovery mode and login as root through single-user mode with networking. I've attempted a dpkg reconfigure believing I may have had some incomplete/borked packages, but to no avail. Looking through /etc/pam.d/login doesn't seem to lead me in any obvious directions and I'm afraid I'm out of ideas. Googling doesn't help me much, one guy reinstalled (really don't want to do this) and the rest I could find were old Gentoo related bugs. Any tips?

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  • How can I convince a project manager that there is no way to solve all the compatibility issues?

    - by SAFAD
    I have been working on this project for more than a year now, and we are close to release, the project manager wants the product to be perfect and working in every single aspect. I like that and I love working under the perfection idea, but it seems he is delaying the launch too much because of compatibility issues, he wants the product to work in every single installation, every single configuration possible, and in most cases, the product just works without issues when it's on the hands of the client. UPDATE : yes the product doesn't work properly when there are conflicts, for example, other products that don't use guidelines nor standards to load libraries (causes double library load which leads to failure), cache is another example and so on..... but we warn the clients about the conflict before purchasing and help them fixing it after purchasing I've tried to explain it by giving some examples on major products, he understands the situation, but can not believe that it is near impossible (if it is not impossible) to do what he wants. Hope it is clarified enough for the community to answer.

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  • Google Analytics account setup for multiple personal websites?

    - by User
    I have multiple personal websites that I develop and plan to develop more over time. The number of websites is currently greater than one but less than 50. Currently I have a single Google account with a single analytics account that has a web property for each of my sites. My understanding is that you can have up to 25 analytics accounts attached to a single google account and each of those 25 acccounts can have up to 50 web properties in them which would allow me to track up to 1,250 sites. I don't think I'll be hitting that number anytime soon, however are there other reasons to structure accounts differently, such as using a separate google account for each site and then adding myself as an administrator?

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  • ????Oracle EBS R12 on Exadata V2 ,MMA and Hight Performance

    - by longchun.zhu
    ???????? ?????,???, ????????hands-on ??? ??????: 1. Oracle EBS R12 on Database Machine MAA & Performance Architecture. 2. Oracle EBS R12 Single Instance Node Deployment Procedure. 2.Start Rapid Install Wizard. 3. Oracle EBS R12 Single Instance Node Chinese Patch Update. 4.Applying Patches. 5.Upgrade Application Database Version to 11g Release 2. 6.Database Upgrade 7. Deploy Clone Application Database to Sun Oracle Database Machine. 8.Migrate Application Database File System to Exadata ASM Storage. 9.Covert Application Database Single Instance to RAC.. 10.Configure High Availability & High Performance Architecture with Exadata.

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  • Git: Removing carriage returns from source-controlled files

    - by Blixt
    I've got a Git repository that has some files with DOS format (\r\n line endings). I would like to just run the files through dos2unix (which would change all files to UNIX format, with \n line endings), but how badly would this affect history, and is it recommended at all? I assume that the standard is to always use UNIX line endings for source-controlled files, and optionally switch to OS-specific line endings locally?

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  • Mail not being sent when using phpmailer

    - by mithunmo
    I am using the following code to send mail to a smtp server . <?php // example on using PHPMailer with GMAIL include("PHPMailer/class.phpmailer.php"); include("PHPMailer/class.smtp.php"); // note, this is optional - gets called from main class if not already loaded $mail = new PHPMailer(); $mail->IsSMTP(); $mail->SMTPAuth = true; // enable SMTP authentication $mail->Host = "mucse491.eu.xxxxx.com"; // sets GMAIL as the SMTP server $mail->Port = 143; // set the SMTP port $mail->Username = "[email protected]"; // GMAIL username $mail->Password = "xxxx"; // GMAIL password $mail->From = "[email protected]"; $mail->FromName = "mithun"; $mail->Subject = "This is the subject"; $mail->AltBody = "This is the body when user views in plain text format"; //Text Body $mail->WordWrap = 50; // set word wrap $mail->AddAddress("[email protected]","First Last"); $mail->IsHTML(true); // send as HTML if(!$mail->Send()) { echo "Mailer Error: " . $mail->ErrorInfo; } else { echo "Message has been sent"; } ?> When I run it from the command line I get the following error PHP Deprecated: Function eregi() is deprecated in C:\wamp\www\phpmailer\class.p hpmailer.php on line 593 Deprecated: Function eregi() is deprecated in C:\wamp\www\phpmailer\class.phpmai ler.php on line 593 PHP Warning: fputs() expects parameter 1 to be resource, integer given in C:\wa mp\www\phpmailer\class.smtp.php on line 213 Warning: fputs() expects parameter 1 to be resource, integer given in C:\wamp\ww w\phpmailer\class.smtp.php on line 213 Mailer Error: SMTP Error: Could not connect to SMTP host. When i run from the browser I get the following error Deprecated: Function eregi() is deprecated in C:\wamp\www\phpmailer\class.phpmailer.php on line 593 Warning: fsockopen() [function.fsockopen]: php_network_getaddresses: getaddrinfo failed: This is usually a temporary error during hostname resolution and means that the local server did not receive a response from an authoritative server. in C:\wamp\www\phpmailer\class.smtp.php on line 122 Warning: fsockopen() [function.fsockopen]: unable to connect to mucse491.xx.xxxxx.com:143 (php_network_getaddresses: getaddrinfo failed: This is usually a temporary error during hostname resolution and means that the local server did not receive a response from an authoritative server. ) in C:\wamp\www\phpmailer\class.smtp.php on line 122 Mailer Error: SMTP Error: Could not connect to SMTP host. Please someone guide me .

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  • cakephp bake view Errors

    - by James
    I have previously baked a controller for a model that I have created. When attempting to bake the view using cakephp I get the following errors: Interactive Bake Shell --------------------------------------------------------------- [D]atabase Configuration [M]odel [V]iew [C]ontroller [P]roject [Q]uit What would you like to Bake? (D/M/V/C/P/Q) > v --------------------------------------------------------------- Bake View Path: /Applications/MAMP/htdocs/app/views/ --------------------------------------------------------------- Possible Controllers based on your current database: 1. Dealers 2. Products 3. Users Enter a number from the list above, type in the name of another controller, or 'q' to exit [q] > 2 Would you like to create some scaffolded views (index, add, view, edit) for this controller? NOTE: Before doing so, you'll need to create your controller and model classes (including associated models). (y/n) [n] > y Would you like to create the views for admin routing? (y/n) [y] > n Warning: mysql_query() expects parameter 2 to be resource, boolean given in /Applications/MAMP/htdocs/cake/libs/model/datasources/dbo/dbo_mysql.php on line 500 Warning: mysql_errno() expects parameter 1 to be resource, boolean given in /Applications/MAMP/htdocs/cake/libs/model/datasources/dbo/dbo_mysql.php on line 576 Warning: Invalid argument supplied for foreach() in /Applications/MAMP/htdocs/cake/libs/model/datasources/dbo/dbo_mysql.php on line 102 Warning: array_keys() expects parameter 1 to be array, boolean given in /Applications/MAMP/htdocs/cake/console/libs/tasks/view.php on line 263 Warning: mysql_query() expects parameter 2 to be resource, boolean given in /Applications/MAMP/htdocs/cake/libs/model/datasources/dbo/dbo_mysql.php on line 500 Warning: mysql_errno() expects parameter 1 to be resource, boolean given in /Applications/MAMP/htdocs/cake/libs/model/datasources/dbo/dbo_mysql.php on line 576 Warning: Invalid argument supplied for foreach() in /Applications/MAMP/htdocs/cake/libs/model/datasources/dbo/dbo_mysql.php on line 102 Warning: array_keys() expects parameter 1 to be array, boolean given in /Applications/MAMP/htdocs/cake/console/libs/tasks/view.php on line 382 Creating file /Applications/MAMP/htdocs/app/views/products/index.ctp Wrote /Applications/MAMP/htdocs/app/views/products/index.ctp Creating file /Applications/MAMP/htdocs/app/views/products/view.ctp Wrote /Applications/MAMP/htdocs/app/views/products/view.ctp Creating file /Applications/MAMP/htdocs/app/views/products/add.ctp Wrote /Applications/MAMP/htdocs/app/views/products/add.ctp Creating file /Applications/MAMP/htdocs/app/views/products/edit.ctp Wrote /Applications/MAMP/htdocs/app/views/products/edit.ctp --------------------------------------------------------------- View Scaffolding Complete. Anybody know why? Google hasn't been a whole lot of help. cakephp 1.2.6 under MAMP on OSX 10.6.2

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  • Configuration problems with django and mod_wsgi

    - by Jimbo
    Hi, I've got problems on getting django to work on apache 2.2 with mod_wsgi. Django is installed and mod_wsgi too. I can even see a 404 page when accessing the path and I can login to django admin. But if I want to install the tagging module I get the following error: Traceback (most recent call last): File "setup.py", line 49, in <module> version_tuple = __import__('tagging').VERSION File "/home/jim/django-tagging/tagging/__init__.py", line 3, in <module> from tagging.managers import ModelTaggedItemManager, TagDescriptor File "/home/jim/django-tagging/tagging/managers.py", line 5, in <module> from django.contrib.contenttypes.models import ContentType File "/usr/lib/python2.5/site-packages/django/contrib/contenttypes/models.py", line 1, in <module> from django.db import models File "/usr/lib/python2.5/site-packages/django/db/__init__.py", line 10, in <module> if not settings.DATABASE_ENGINE: File "/usr/lib/python2.5/site-packages/django/utils/functional.py", line 269, in __getattr__ self._setup() File "/usr/lib/python2.5/site-packages/django/conf/__init__.py", line 40, in _setup self._wrapped = Settings(settings_module) File "/usr/lib/python2.5/site-packages/django/conf/__init__.py", line 75, in __init__ raise ImportError, "Could not import settings '%s' (Is it on sys.path? Does it have syntax errors?): %s" % (self.SETTINGS_MODULE, e) ImportError: Could not import settings 'mysite.settings' (Is it on sys.path? Does it have syntax errors?): No module named mysite.settings My httpd.conf: Alias /media/ /home/jim/django/mysite/media/ <Directory /home/jim/django/mysite/media> Order deny,allow Allow from all </Directory> Alias /admin/media/ "/usr/lib/python2.5/site-packages/django/contrib/admin/media/" <Directory "/usr/lib/python2.5/site-packages/django/contrib/admin/media/"> Order allow,deny Allow from all </Directory> WSGIScriptAlias /dj /home/jim/django/mysite/apache/django.wsgi <Directory /home/jim/django/mysite/apache> Order deny,allow Allow from all </Directory> My django.wsgi: import sys, os sys.path.append('/home/jim/django') sys.path.append('/home/jim/django/mysite') os.chdir('/home/jim/django/mysite') os.environ['DJANGO_SETTINGS_MODULE'] = 'mysite.settings' import django.core.handlers.wsgi application = django.core.handlers.wsgi.WSGIHandler() I try to get this to work since a few days and have read several blogs and answers here on so but nothing worked.

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