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  • How can a developer realize the full value of his work [closed]

    - by Jubbat
    I, honestly, don't want to work as a developer in a company anymore after all I have seen. I want to continue developing software, yes, but not in the way I see it all around me. And I'm in London, a city that congregates lots of great developers from the whole world, so it shouldn't be a problem of location. So, what are my concerns? First of all, best case scenario: you are paying managers salary out of yours. You are consistently underpaid by making up for the average manager negative net return plus his whole salary. Typical scenario. I am a reasonably good developer with common sense who cares for readable code with attention to basic principles. I have found way too often, overconfident and arrogant developers with a severe lack of common sense. Personally, I don't want to follow TDD or Agile practices like all the cool kids nowadays. I would read about them, form my own opinion and take what I feel is useful, but don't follow it sheepishly. I want to work with people who understand that you have to design good interfaces, you absolutely have to document your code, that readability is at the top of your priorities. Also people who don't have a cargo cult mentality too. For instance, the same person who asked me about design patterns in a job interview, later told me that something like a List of Map of Vector of Map of Set (in Java) is very readable. Why would someone ask me about design patterns if they can't even grasp encapsulation? These kind of things are the norm. I've seen many examples. I've seen worse than that too, from very well paid senior devs, by the way. Every second that you spend working with people with such lack of common sense and clear thinking, you are effectively losing money by being terribly inefficient with your time. Yet, with all these inefficiencies, the average developer earns a high salary. So I tried working on my own then, although I don't like the idea. I prefer healthy exchange of opinions and ideas and task division. I then did a bit of online freelancing for a while but I think working in a sweatshop might be more enjoyable. Also, I studied computer engineering and you are in an environment in which your client will presume you don't have any formal education because there is no way to prove it. Again, you are undervalued. You could try building a product, yes. But, of course, luck is a big factor. I wonder if there is a way to work in something you can do well, software development, and be valued for the quality of your work and be paid accordingly, and where you and only you get fairly paid for the value you generate. I know that what I have written seems somehow unlikely but I strongly feel this way. Hopefully someone will understand me and has already figured this out. I don't think I'm alone in this kind of feeling.

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  • lvm disappeared after disc replacement on raid10

    - by user142295
    here my problem: I am running ubuntu 12.04 on a raid10 (4 disks), on top of which I installed an lvm with two volume groups (one for /, one for /home). The layout of the disks are as follows: Disk /dev/sda: 1500.3 GB, 1500301910016 bytes 255 heads, 63 sectors/track, 182401 cylinders, total 2930277168 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x0003f3b6 Device Boot Start End Blocks Id System /dev/sda1 * 63 481949 240943+ 83 Linux /dev/sda2 481950 2910640634 1455079342+ fd Linux raid autodetect /dev/sda3 2910640635 2930272064 9815715 82 Linux swap / Solaris Disk /dev/sdb: 1500.3 GB, 1500301910016 bytes 255 heads, 63 sectors/track, 182401 cylinders, total 2930277168 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00069785 Device Boot Start End Blocks Id System /dev/sdb1 63 2910158684 1455079311 fd Linux raid autodetect /dev/sdb2 2910158685 2930272064 10056690 82 Linux swap / Solaris Disk /dev/sdc: 1500.3 GB, 1500301910016 bytes 255 heads, 63 sectors/track, 182401 cylinders, total 2930277168 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00000000 Device Boot Start End Blocks Id System /dev/sdc1 63 2910158684 1455079311 fd Linux raid autodetect /dev/sdc2 2910158685 2930272064 10056690 82 Linux swap / Solaris Disk /dev/sdd: 1500.3 GB, 1500301910016 bytes 255 heads, 63 sectors/track, 182401 cylinders, total 2930277168 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x000f14de Device Boot Start End Blocks Id System /dev/sdd1 63 2910158684 1455079311 fd Linux raid autodetect /dev/sdd2 2910158685 2930272064 10056690 82 Linux swap / Solaris The first disk (/dev/sda) contains the /boot partition on /dev/sda1. I use grub2 to boot the system off this partition. On top of this raid10 I installed two volume groups, one for /, one for /home. This system worked well, I even exchanged two disks during the last two years. It always worked. But not this time. For the first time, /dev/sda broke. I do not know if this is an issue – I know I would have struggled anyways to overcome the problem with /boot installed on that disk and grub2 installed on the mbr of /dev/sda. Anyways, I did what I always did: start knoppix fire up the raid sudo mdadm --examine -scan which returns ARRAY /dev/md127 UUID=0dbf4558:1a943464:132783e8:19cdff95 start it up sudo mdadm --assemble /dev/md127 fail the failing disk (smart event) sudo mdadm /dev/md127 --fail /dev/sda2 remove the failing disk sudo mdadm /dev/md127 --remove /dev/sda2 stop the raid sudo mdadm -S /dev/md127 take out the disk replace it with a new one create the same partitions as on the failling one add it to the raid sudo mdadm --assemble /dev/md127 sudo mdadm /dev/md127 --add /dev/sda2 wait 4 hours All looks fine: cat /proc/mdstat returns: Personalities : [raid10] md127 : active raid10 sda2[0] sdd1[3] sdc1[2] sdb1[1] 2910158464 blocks 64K chunks 2 near-copies [4/4] [UUUU] unused devices: <none> and sudo mdadm --detail /dev/md127 returns /dev/md127: Version : 0.90 Creation Time : Wed Jun 10 13:08:46 2009 Raid Level : raid10 Array Size : 2910158464 (2775.34 GiB 2980.00 GB) Used Dev Size : 1455079232 (1387.67 GiB 1490.00 GB) Raid Devices : 4 Total Devices : 4 Preferred Minor : 127 Persistence : Superblock is persistent Update Time : Thu Mar 21 16:27:40 2013 State : clean Active Devices : 4 Working Devices : 4 Failed Devices : 0 Spare Devices : 0 Layout : near=2 Chunk Size : 64K UUID : 0dbf4558:1a943464:132783e8:19cdff95 (local to host Microknoppix) Events : 0.4824680 Number Major Minor RaidDevice State 0 8 2 0 active sync /dev/sda2 1 8 17 1 active sync /dev/sdb1 2 8 33 2 active sync /dev/sdc1 3 8 49 3 active sync /dev/sdd1 However, there is no trace of the volume groups. Rebooting into knoppix does not help Restarting the old system (I actually replugged and re-added the failing disk for that – the system begins to start, but then fails to see the / partition – no wonder if the volume group is gone) does not help. sudo vgscan, sudo vgdisplay, sudo lvs, sudo lvdisplay, sudo vgscan –mknodes all returned No volume groups found. I am completely at a loss. Can anyone tell me if and how I can recover my data? Thanks in advance!

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  • Bios Memory settings and Virtualization + Ubuntu (Unofficial Answers Welcome) [closed]

    - by TardisGuy
    Attempting to optimize my (Main Windowless) Ubuntu system for my uses I will detail questions below, I understand this might be the wrong place to ask these questions. If so, my apologies and I thank you so much for your patience. Thanks to all the volenteers that have helped me learn ubuntu over the years (Since 5.10) This is a "short" list of questions I have been trying to figure out for some time. If you feel you can answer one but not another, that's already more than I could ask for. I have wrote this up in a format for easy navigation to important points Hopefully to less annoy your eyes. You're welcome :) or i'm sorry i annoy you. :( If you would be so kind, Please format answers as follows: question 1: _ _ _ _ _ or question 1-a: _ _ _ _ _ If you want to simply link me to relevant information, rather than type up something really detailed; that would be more than awesome! Memory Specific Questions Goal: Maximizing memory bandwith to better perform in Virtualization, and Large file compression. (Possible conflict?) Ganged vs Unganged "which is better?"** is relative, i know. But what about ganged vs unganged - With or without Bank/channel interleaving? a: Speculation - If i understand correctly, "channel interleaving has something to do with using both channels to read or write in a kind of "striping" pattern, as opposed to a standard half duplex operation.(probably wrong) but wouldn't ganged channels make this irrelevant? Memory Interleaving(bank). Does it have a down side? Does it require a ratio of clocks? (If I run 4x4gig ddr3) a. If im reading correctly(trying to learn), this is designed to spread operations between latency cycles to work around the higher latency of "normal" operation. b. However it seems to me that it has to be: divisible by fractions of a master clock? So if i run memory at 1333mhz, then the mean between 2 (physical) banks would operate every (roughly) 600Mhz? Warning! Possibly utter nonsense: (1333/2 interleaving to act like 1 memory module per 2 sticks of a total of 4 sticks, meaning 2x channels@4) c. which makes me wonder if there would be left over clock cycles the system would have to... "truncate/balance" or something? But I'm certain theres a feature somewhere i don't understand. Virtualization Questions AMD-V - Option of IOMMU Turned it on, why do i have extra option of "64MB"? If IOMMU is on, but "64MB" is "disabled", Is it on? (have scoured google, I still dont know) a. I think i understand that its supposed to (kind of) "set aside" a part of ram to act as a faster interactive zone for "stuff" (usb, Graphics, and... what?) b. I am using Nvidia graphics on AMD (Used kernel option "iommu=pt iommu=1, pt "passthrough"? No idea what they do, found it on google to solve boot up issue) c. Will this option help me use low latency sound hardware, like my midi keyboard? Can you recommend any additional tweaks? a. sysctl settings? b. swap settings? Grats, youve reached the end. Thanks for Reading.

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  • Making it GREAT! Oracle Partners Building Apps Workshop with UX and ADF in UK

    - by ultan o'broin
    Yes, making is what it's all about. This time, Oracle Partners in the UK were making great looking usable apps with the Oracle Applications Development Framework (ADF) and user experience (UX) toolkit. And what an energy-packed and productive event at the Oracle UK, Thames Valley Park, location it was. Partners learned the fundamentals of enterprise applications UX, why it's important, all about visual design, how to wireframe designs, and then how to build their already-proven designs in ADF. There was a whole day on mobile apps, learning about mobile design principles, free mobile UX and ADF resources from Oracle, and then trying it out. The workshop wrapped up with the latest Release 7 simplified UIs, Mobilytics, and other innovations from Oracle, and a live demo of a very neat ADF Mobile Android app built by an Oracle contractor. And, what a fun two days both Grant Ronald of ADF and myself had in running the workshop with such a great audience, too! I particularly enjoyed the wireframing and visual design sessions interaction; and seeing some outstanding work done by partners. Of note from the UK workshop were innovative design features not seen before and made me all the happier that developers were bringing their own ideas from the consumer IT world of mobility, simplicity, and social to the world of work apps in a smart way within an enterprise methodology too.  Partner wireframe exercise. Applying mobile design principles and UX design patterns means you've already productively making great usable apps! Next, over to Oracle ADF Mobile with it! One simple example from the design of a mobile field service app was that participants immediately saw how the UX and device functionality of the super UK-based app Hailo app could influence their designs (the London cabbie influence maybe?), as well as how we all use maps, cameras, barcode scanners and microphones on our phones could be used in work. And, of course, ADF Mobile has the device integration solutions there too! I wonder will U.S. workshops in Silicon Valley see an Uber UX influence (LOL)! That we also had partners experienced with Oracle Forms who could now offer a roadmap from Forms to Simplified UI and Mobile using ADF, and do it through through the cloud, really made this particular workshop go "ZING!" for me. Many thanks to the Oracle PartnerNetwork (OPN) team for organizing this event with us, and to the representatives of the Oracle Partners that showed and participated so well. That's what I love out this outreach. It's a two-way, solid value-add for all. Interested? Why would partners and developers with ADF skills sign up for this workshop? Here's why: Learn to use the Oracle Applications User Experience design patterns as the usability building blocks for applications development in Oracle Application Development Framework. The workshop enables attendees to build modern and visually compelling desktop and mobile applications that look and behave like Oracle Cloud Applications, and that can co-exist with partner integrations, new, or existing applications deployments. Partners learn to offer customers and clients more than just coded functionality; instead they can provide a complete user experience with a roadmap for continued ROI from applications that also creating more business and attracts the kudos and respect from other makers of apps as they're wowed by the results. So, if you're a partner and interested in attending one of these workshops and benefitting from such learning, as well as having a platform to show off some of your own work, stay well tuned to your OPN channels, to this blog, to the VoX blog, and to the @usableapps Twitter account too. Can't wait? For developers and partners, some key mobile resources to explore now Oracle ADF Mobile UX Patterns and Components Wiki Oracle ADF Academy (Mobile) Oracle ADF Insider Essentials Oracle Applications Mobile User Experience Design Patterns and Guidance

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  • Test your internet connection - Emtel Fixed Broadband

    Already at the begin of April, I had a phone conversation with my representative at Emtel Ltd. about some upcoming issues due to the ongoing construction work in my neighbourhood. Unfortunately, they finally raised the house two levels above ours, and of course this has to have a negative impact on the visibility between the WiMAX outdoor unit on the roof and the aimed access point at Medine. So, today I had a technical team here to do a site survey and to come up with potential solutions. Short version: It doesn't look good after all. The site survey Well, the two technicians did their work properly, even re-arranged the antenna to check the connection with another end point down at La Preneuse. But no improvements. Looks like we are out of luck since the construction next door hasn't finished yet and at the moment, it even looks like they are planning to put at least one more level on top. I really wonder about the sanity of the responsible bodies at the local district council. But that's another story. Anyway, the outdoor unit was once again pointed towards Medine and properly fixed with new cable guides (air from the sea and rust...). Both of them did a good job and fine-tuned the reception signal to a mere 3 over 9; compared to the original 7 over 9 I had before the daily terror started. The site survey has been done, and now it's up to Emtel to come up with (better) solutions. Well, I wouldn't mind to have an unlimited, symmetric 3G/UMTS or even LTE connection. Let's see what they can do... Testing the connection There are several online sites available which offer you to check certain aspects of your internet connection. Personally, I'm used to speedtest.net and it works very well. I think it is good and necessary to check your connection from time to time, and only a couple of days ago, I posted the following on Emtel's wall at Facebook (21.05.2013 - 14:06 hrs): Dear Emtel, could you eventually provide an answer on the miserable results of SpeedTest? I chose Rose Hill (Hosted by Emtel Ltd.) as testing endpoint... Sadly, no response to this. Seems that the marketing department is not willing to deal with customers on Facebook. Okay, over at speedtest.net you can use their Flash-based test suite to check your connection to quite a number of servers of different providers world-wide. It's actually very interesting to see the results for different end points and to compare them to each other. The results Following are the results of Rose Hill (hosted by Emtel) and respectively Frankfurt, Germany (hosted by Vodafone DE): Speedtest.net result of 30.05.2013 between Flic en Flac and Rose Hill, Mauritius (Emtel - Fixed Broadband) Speedtest.net result of 30.05.2013 between Flic en Flac and Frankfurt, Germany (Emtel - Fixed Broadband) Luckily, the results are quite similar in terms of connection speed; which is good. I'm currently on a WiMAX tariff called 'Classic Browsing 2', or Fixed Broadband as they call it now, which provides a symmetric line of 768 Kbps (or roughly 0.75 Mbps). In terms of downloads or uploads this means that I would be able to transfer files in either direction with approximately 96 KB/s. Frankly speaking, thanks to compression, my choice of browser and operating system I usually exceed this value and I have download rates up to 120 KB/s - not too bad after all. Only the ping times are a little bit of concern. Due to the difference in distance, or better said based on the number of hubs between the endpoints, they indicate the amount of time that it takes to send a package from your machine to the remote server and get a response back. A lower value is better, and usually the ping is less than 300 ms between Mauritius and Europe. The alternatives in Mauritius Not sure whether I should note this done because for my requirements there are no alternatives to Emtel WiMAX at the moment. It would be great to have your opinion on the situation of internet connectivity in Mauritius. Are there really alternatives? And if so, what are the conditions?

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  • Wireless device bug on 13.10. BCM4313 registers as eth1 instead of wlan0 and no internet access

    - by user205691
    My Hotel wiFi requires me to login with a username & password after connecting to the hotspot. So, my browser would open a page with username & passwrd fields to login and then connect to internet. But unfortunately, firefox & chromium dont seem to work. i dont think it is browser related but a setting for the wifi router or driver which is creating this issue. using Broadcom 801.11 STA wireless driver (proprietary). tried open source as well but same result !! The image linked below shows my wifi connection setting & Chromium. The login page itself comes up after a long time and after entering the credentials, it keeps loading for ever !! it is the same case for every other browser.. so i dont think its browser issue but something to do with wifi setting or network manager stuff.. interestingly, i am able to connect to WiFi networks with WPA key without any issue. Adhoc hotspot is a problem and that is my regular home network :( .. I hope i can get some help solving this issue ! I have tried repeating the same hotspot after login from my android, by creating a virtual repeater with WPA key and it works. I can browse on ubuntu using this method.. but cant be doing this regularly ! I tried loading the same login page of the hotel wifi while browsing through my repeater wifi created on mobile and screen shot attached below. the page loads up quick and easy.. so this means something is wrong with the way network manager handles adhoc connectivity & login ?? i installed wicd0 but it crashes on startup and not helpful at all ! Screenshot of Chromium page Login page with repeated hotspot ifconfig in my terminal results: krishna@krishna-HP-ENVY-4-Notebook-PC:~$ ifconfig eth0 Link encap:Ethernet HWaddr 28:92:4a:1d:54:fa UP BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B) eth1 Link encap:Ethernet HWaddr e0:06:e6:89:fa:49 inet addr:10.24.1.71 Bcast:10.24.1.255 Mask:255.255.255.0 inet6 addr: fe80::e206:e6ff:fe89:fa49/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:10940 errors:0 dropped:0 overruns:0 frame:348431 TX packets:6611 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:7669631 (7.6 MB) TX bytes:864195 (864.1 KB) Interrupt:17 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:65536 Metric:1 RX packets:2146 errors:0 dropped:0 overruns:0 frame:0 TX packets:2146 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:166120 (166.1 KB) TX bytes:166120 (166.1 KB) I wonder why is the wireless configured under eth1 ? I think this is a bug with earlier ubuntu versions, but is this normal in 13.10 or is there a wrong configuration here ? The wireless device in my pc is BCM4313 and i have installed the bcmwl-kernel-sources, wireless-tools to support the device. i also reinstalled the bcmwl-kernel as suggested on broadcom website, via synaptic package manager. Nothing has changed this situation ! I tried booting into liveUSB and then ifconfig results show wireless under wlan0. But then the wireless connects and loads the login page. So is the problem with the device configuration now ? i really want to get this fixed before i start configuring the other stuff like ATI graphics and such on the laptop for overheating.. lack of internet access is too bad a bug for me :P any help is appreciated!

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  • Two Weeks To Go, Still Time to Register

    - by speakjava
    Yes, it's now only two weeks to the start of the 17th JavaOne conference! This will be my ninth JavaOne, I came fairly late to this event, attending for the first time in 2002.  Since then I've missed two conferences, 2006 for the birth of my son (a reasonable excuse I think) and 2010 for reasons we'll not go into here.  I have quite the collection of show devices, I've still got the WoWee robot, the HTC phone for JavaFX, the programmable pen and the Sharp Zaurus.  The only one I didn't keep was the homePod music player (I wonder why?) JavaOne is a special conference for many reasons, some of which I list here: A great opportunity to catch up on the latest changes in the Java world.  This is not just in terms of the platform, but as much about what people are doing with Java to build new and cool applications. A chance to meet people.  We have these things called BoFs, which stands for "Birds of a Feather", as in "Birds of a feather, flock together".  The idea being to have sessions where people who are interested in the same topic don't just get to listen to a presentation, but get to talk about it.  These sessions are great, but I find that JavaOne is as much about the people I meet in the corridors and the discussions I have there as it is about the sessions I get to attend. Think outside the box.  There are a lot of sessions at JavaOne covering the full gamut of Java technologies and applications.  Clearly going to sessions that relate to your area of interest is great, but attending some of the more esoteric sessions can often spark thoughts and stimulate the imagination to go off and do new and exciting things once you get back. Get the lowdown from the Java community.  Java is as much about community as anything else and there are plenty of events where you can get involved.  The GlassFish party is always popular and for Java Champions and JUG leaders there's a couple of special events too. Not just all hard work.  Oracle knows how to throw a party and the appreciation event will be a great opportunity to mingle with peers in a more relaxed environment.  This year Pearl Jam and Kings of Leon will be playing live.  Add free beer and what more could you want? So there you have it.  Just a few reasons for why you want to attend JavaOne this year.  Oh, and of course I'll be presenting three sessions which is even more reason to go.  As usual I've gone for some mainstream ("Custom Charts" for JavaFX) and some more 'out there' ("Java and the Raspberry Pi" and "Gestural Interfaces for JavaFX").  Once again I'll be providing plenty of demos so more than half my luggage this year will consist of a Kinect, robot arm, Raspberry Pis, gamepad and even an EEG sensor. If you're a student there's one even more attractive reason for going to JavaOne: It's Free! Registration is here.  Hope to see you there!

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  • How do you deal with poor management [closed]

    - by Sybiam
    I come from a company where during a project, we saw the client 3 time during the whole project. We were never informed when did the client came in office in order to discuss with him about his requirements. I did setup redmine and told them that if they have any request they can post an issue there. But they never really used redmine to publish anything. They would instead: harass a team member on the phone at any time of the day or night hand us over sheets of paper with new requests or changes hand us over new design (graphical) They requested how much time it would take us to finish the project, I gave them a date and a week to test everything and deployment. I calculated that time taking into account the current features we had to do. And then blamed us that our deadline was wrong and that we lied. But the truth is that one week before that deadline they added a couple of monster feature from nowhere and that week were we were supposed to test and deploy, my friends spent all day in the office changing all little things. After that project, my friend got some kind of depression and got scared everytime his phone rang. They kind of used him as a communication proxy. After that project of hell, (every body got pissed off on that project) as far as I know the designer who was working with us left work after that project and she had some kind of issue too with managers. My team also started looking for work somewhere else. At first I tried to get things straight with management, I tried to make a meeting to discuss about the communication issues and so on.. What really pissed me off and made me leave that job for good is the following. Me: "We have to discuss about what went wrong on the last project. It's quite important" Him: "Lets talk about it in a week or two. Just make a list of all the things you did wrong" Me: "We already have a new project and we want to prevent what happened on the last project to happen again" Him: "Just do it and well have our meeting in a week, make a list of all the thing you did wrong." It kind of ended there then he organized a meeting at a moment I wasn't unable to come. My friend discussed with him and tried to explained him that we really had to discuss about organization issue on how to manage a project. And his answer was pretty much: "During the meeting I don't want to ear how you want to us to manage a project but I want to know what you guys did wrong" After that I felt it wasn't even worth it discussing anything since they weren't even ready listening to us. Found a new job and I'm pretty happy with my choice. I'd like to know how you'd handle such situation. Is there anything to do to solve communication problem? After that project my friend got a depression and some other employee had their down too as far as I know. I wonder what else we can do other than leave these place as soon as possible. Feel sad for the people that are still there and get screamed at just because they need money in order to eat and finding an other job like that isn't that easy. note I died a little when our boss asked us to make a list of things we (programmers) did wrong. This is probably the stupidest request I ever got. If everybody thinks they did everything right, it doesn't mean that there is no problems. Individual problem are rarely the big issue. Colleagues help each others and solve theses issues to prevent problems.

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  • Can you/should you develop components for ASP.NET MVC?

    - by Vilx-
    Following from the previous question I've started to wonder - is it possible to implement "Components" in ASP.NET MVC (latest version)? And should you? Let's clarify what I mean with a "component". With that I mean a "control" (aka "widget"), similar to those that ASP.NET webforms is built upon. A gridview might be a good example. In webforms I can place on my form a datasource component (one line of code), a gridview component (another line of code) and bind them together (specify an attribute on the gridview). In the codebehind file I fill the datasource with data (a few lines of DB-querying code), and I'm all set. At this point the gridview is a fully functional standalone component. I can open the form, and I'll see all the data. I can sort it by clicking on the column headers; it is split into several pages; I can drag the column headers around and rearrange columns; I can turn on "grouping" mode; etc. And I don't need to write another line of code for any of it. The gridview, as a component, already has all the code tucked away in its classes and assemblies. I just place it on the form, initialize it, and it Just Works. At some times (like sorting or navigation to a different page) it will also perform ajax callbacks to the server, but those too will be handled internally, with my code having no knowledge at all about it. And then there are also events that I can attach if I want to get notified when something happens. In MVC I cannot see a way of doing this cleanly. Sure, there are the partial views, but those only handle half of the problem - they render the initial HTML. Some more can be achieved with client-side Javascript (like column re-arranging), but when the grid needs to do an ajax callback (say, to fetch the next page of data), my code will have to get involved and process that request. At best I guess I can provide some helper methods to process it, but I'll have to write the code that calls them, and also provide a controller method with signature matching the arguments of that callback. I guess that I could make some hacks with global events or special routes or something, but that just seems... hackish. Unelegant. Perhaps this is not the MVC way? Although I've completed one project in it, I'm still far from being an MVC expert. But then what is? In the intranet application that we're building there are dozens upon dozens of such grids. Naturally I want them all to have a unified look & behavior, and I don't want to repeat the same code all over the place. So what's the "MVC" approach to this problem?

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  • Failed to unmount partitions

    - by msknapp
    I'm trying to install ubuntu from a pen drive. I have windows 7 installed already and want to keep that installation. I have a 3TB drive that has one 2TB partition on it, so the last 1TB is completely unused, which is where I want to install ubuntu. I started ubuntu in "try ubuntu" mode and then opened gparted, and then deleted the unused partition for the last third of my drive, then tried to install ubuntu. During the install, it asked me if I wanted to unmount the drives I already have The installer has detected that the following disks have mounted partitions: /dev/sda, /dev/sdb Do you want the installer to try to unmount the partitions on these disks before continuing? If you leave them mounted, you will not be able to create, delete, or resize partitions on these disks, but you may be able to install to existing partitions there. No, Yes I said no because I don't want to lose my windows 7 installation, nor any of that data. I wonder, if I had said yes above, would I have lost all the data on those drives? Anyways, I hit no and continued. I chose to install ubuntu alongside windows 7, and hit continue. A few minutes passed when this popup appeared: Failed to unmount partitions The installer needs to commit changes to partition tables, but cannot do so because the partitions on the following mount points could not be unmounted: /media/ubuntu/Three\ Terabyte Drive Terabyte\ DriveDrive Please close any applications using these mount points. Would you like the installer to try to unmount these partitions again? Go Back, Continue Why is this not working? What am I supposed to do? ========== Update: I went ahead and said yes, it can unmount those partitions. It finished installing Ubuntu, but now when i start my machine it just takes me to the grub rescue prompt. Seems like it broke something. What can I do now? =============== Results of fdisk -l: Disk /dev/sda: 500.1 GB, 500107862016 bytes 255 heads, 63 sectors/track, 60801 cylinders, total 976773168 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00027e14 Device Boot Start End Blocks Id System /dev/sda1 * 2048 206847 102400 7 HPFS/NTFS/exFAT /dev/sda2 206848 976771071 488282112 7 HPFS/NTFS/exFAT WARNING: GPT (GUID Partition Table) detected on '/dev/sdb'! The util fdisk doesn't support GPT. Use GNU Parted. Disk /dev/sdb: 3000.6 GB, 3000592982016 bytes 255 heads, 63 sectors/track, 364801 cylinders, total 5860533168 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes Disk identifier: 0x00000000 Device Boot Start End Blocks Id System /dev/sdb1 1 4294967295 2147483647+ ee GPT Partition 1 does not start on physical sector boundary. Disk /dev/sdc: 16.0 GB, 16008609792 bytes 255 heads, 63 sectors/track, 1946 cylinders, total 31266816 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00000000 Device Boot Start End Blocks Id System /dev/sdc1 * 32 31266815 15633392 c W95 FAT32 (LBA) Disk /dev/sdd: 999.5 GB, 999501594624 bytes 255 heads, 63 sectors/track, 121515 cylinders, total 1952151552 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x0002ae3f Device Boot Start End Blocks Id System /dev/sdd1 2048 1952151551 976074752 7 HPFS/NTFS/exFAT

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  • return the result of a query and the total number of rows in a single function

    - by csotelo
    This is a question as might be focused on working in the best way, if there are other alternatives or is the only way: Using Codeigniter ... I have the typical 2 functions of list records and show total number of records (using the page as an alternative). The problem is that they are rather large. Sample 2 functions in my model: count Rows: function get_all_count() { $this->db->select('u.id_user'); $this->db->from('user u'); if($this->session->userdata('detail') != '1') { $this->db->join('management m', 'm.id_user = u.id_user', 'inner'); $this->db->where('id_detail', $this->session->userdata('detail')); if($this->session->userdata('management') === '1') { $this->db->or_where('detail', 1); } else { $this->db->where("id_profile IN ( SELECT e2.id_profile FROM profile e, profile e2, profile_path p, profile_path p2 WHERE e.id_profile = " . $this->session->userdata('profile') . " AND p2.id_profile = e.id_profile AND p.path LIKE(CONCAT(p2.path,'%')) AND e2.id_profile = p.id_profile )", NULL, FALSE); $this->db->where('MD5(u.id_user) <>', $this->session->userdata('id_user')); } } $this->db->where('u.id_user <>', 1); $this->db->where('flag <>', 3); $query = $this->db->get(); return $query->num_rows(); } results per page function get_all($limit, $offset, $sort = '') { $this->db->select('u.id_user, user, email, flag'); $this->db->from('user u'); if($this->session->userdata('detail') != '1') { $this->db->join('management m', 'm.id_user = u.id_user', 'inner'); $this->db->where('id_detail', $this->session->userdata('detail')); if($this->session->userdata('management') === '1') { $this->db->or_where('detail', 1); } else { $this->db->where("id_profile IN ( SELECT e2.id_profile FROM profile e, profile e2, profile_path p, profile_path p2 WHERE e.id_profile = " . $this->session->userdata('profile') . " AND p2.id_profile = e.id_profile AND p.path LIKE(CONCAT(p2.path,'%')) AND e2.id_profile = p.id_profile )", NULL, FALSE); $this->db->where('MD5(u.id_user) <>', $this->session->userdata('id_user')); } } $this->db->where('u.id_user <>', 1); $this->db->where('flag <>', 3); if($sort) $this->db->order_by($sort); $this->db->limit($limit, $offset); $query = $this->db->get(); return $query->result(); } You see, I repeat the most of the functions, the difference is that only the number of fields and management pages. I wonder if there is any alternative to get as much results as the query in a single function. I have seen many tutorials, and all create 2 functions: one to count and another to show results ... Will there be more optimal?

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  • Exception converting Office files to PDF using ABCpdf.NET onWindows Server 2008

    - by drivendevelopment
    Has anyone delt with this exception from ABCpdf? We're running on Server 2008 and only have issues converting Office files (Word and Excel). This all worked well on Server 2003. Because we're only having issues with Office files I wonder if it's related to the XPS support on Server 2008? The code that calls into this function is running as a Windows Service. Private Overloads Function ConvertMicrosoftOfficeDocToPdf(ByVal inputFile As Byte(), ByVal fileExt As String) As Byte() Dim abcDoc As WebSupergoo.ABCpdf7.Doc = Nothing Try abcDoc = New WebSupergoo.ABCpdf7.Doc() Dim xro As New WebSupergoo.ABCpdf7.XReadOptions() xro.FileExtension = fileExt Try abcDoc.Read(inputFile, xro) Catch ex As Exception System.Diagnostics.Trace.Write(ex.ToString()) Throw ex End Try Dim fileBytes As Byte() = abcDoc.GetData() Return fileBytes Finally If Not abcDoc Is Nothing Then abcDoc.Clear() abcDoc.Dispose() End If End Try End Function WebSupergoo.ABCpdf7.Internal.PDFException: Attempted to read or write protected memory. This is often an indication that other memory is corrupt. --- System.AccessViolationException: Attempted to read or write protected memory. This is often an indication that other memory is corrupt. at WebSupergoo.ABCpdf7.Internal.NDoc._InvokeMethod(IntPtr inDoc, Int32 inMethod, Int32 inIndex, Int32 inFlags, String inParams, String& outErr) at WebSupergoo.ABCpdf7.Internal.NDoc.InvokeMethod(IntPtr inDoc, Int32 inMethod, Int32 inIndex, Int32 inFlags, String inParams, String& outErr) at WebSupergoo.ABCpdf7.Doc.PrintToXps(String inputFile, String outputFile, Int32 timeout, String printerName) at WebSupergoo.ABCpdf7.Operations.XpsImportOperation.ImportAny(Doc doc, String path, Int32 timeout) at WebSupergoo.ABCpdf7.XReadOptions.ImportXpsAny(Doc doc, String path, Boolean clear) at WebSupergoo.ABCpdf7.XReadOptions.Read(Doc doc, Byte[] data, ReadModuleType module) at WebSupergoo.ABCpdf7.XReadOptions.Read(Doc doc, Byte[] data)

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  • ObjectiveC builtin template system ?

    - by Aurélien Vallée
    I am developing an iPhone application and I use HTML to display formatted text. I often display the same webpage, but with a different content. I would like to use a template HTML file, and then fill it with my diffent values. I wonder if ObjectiveC has a template system similar to ERB in Ruby. That would allow to do things like Template: <HTML> <HEAD> </HEAD> <BODY> <H1>{{{title}}}</H1> <P>{{{content}}}</P> </BODY> </HTML> ObjectiveC (or what it may be in an ideal world) Template* template = [[Template alloc] initWithFile:@"my_template.tpl"]; [template fillMarker:@"title" withContent:@"My Title"]; [template fillMarker:@"content" withContent:@"My text here"]; [template process]; NSString* result = [template result]; [template release]; And the result string would contain: <HTML> <HEAD> </HEAD> <BODY> <H1>My Title</H1> <P>My text here</P> </BODY> </HTML> The above example could be achieved with some text replacement, but that would be a pain to maintain. I would also need something like loops inside templates. For instance if I have multiple items to display, i would like to generate multiple divs. Thanks for reading :)

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  • Gomoku array-based AI-algorithm?

    - by Lasse V. Karlsen
    Way way back (think 20+ years) I encountered a Gomoku game source code in a magazine that I typed in for my computer and had a lot of fun with. The game was difficult to win against, but the core algorithm for the computer AI was really simply and didn't account for a lot of code. I wonder if anyone knows this algorithm and has some links to some source or theory about it. The things I remember was that it basically allocated an array that covered the entire board. Then, whenever I, or it, placed a piece, it would add a number of weights to all locations on the board that the piece would possibly impact. For instance (note that the weights are definitely wrong as I don't remember those): 1 1 1 2 2 2 3 3 3 444 1234X4321 3 3 3 2 2 2 1 1 1 Then it simply scanned the array for an open location with the lowest or highest value. Things I'm fuzzy on: Perhaps it had two arrays, one for me and one for itself and there was a min/max weighting? There might've been more to the algorithm, but at its core it was basically an array and weighted numbers Does this ring a bell with anyone at all? Anyone got anything that would help?

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  • UIImagePickerController in landscape on iPhone OS >= 3.2

    - by Mike
    Here is the problem. I have to open the UIImagePickerController in landscape. At this phase I am doing the app for iPhone but it will be soon adjusted for iPad. The classical way to force the UIImagePickerController to open in landscape would be to use this solution. But this solution has a problem, specially for iPad, that is the line, [[UIDevice currentDevice] setOrientation:UIInterfaceOrientationLandscapeRight]; because Apple rejects an application for doing that, as they don't want you to set an orientation, because if the user is holding the iPad on landscapeLeft the controller will appear upside down. Apple want you to use your paranormal powers and open the controller the right way for the user. The only problem is this: My controller is to appear when the application starts At this time, the orientation information is not yet available, because it takes a while for the device to discover its orientation; I've tried to get around this using the accelerometer to discover the orientation, but the accelerometer data is not yet available too when the app starts. I could make a routine to delay the application until the orientation is available, showing a black screen to the user in the mean time, or a beach ball, but I wonder if there's a more elegant way to do that! thanks.

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  • SharePoint: Can't Connect to a Configuration Database When Using Configuration Wizard

    - by Denis
    Hello everyone. I wonder if you could help me with the following problem: We have a SharePoint farm consisted of two servers with an NLB (a load balancer), a database server and an index server (4 servers in total). The issues initially appeared when we were trying to change Search settings via Shared services provider and an error was appearing with the message I can’t even remember now. To fix that problem, we decided to restart Search services on the Index server via Central Administration… and the process had stuck with a status “stopping” for several days. We’ve found a few solutions on the forums, but nothing had helped. Then we’ve tried to exclude the Index server from the farm, but yet again, Search services would not stop. However, after a week we’ve noticed that the services finally stopped. That was a prologue. So, after the Search services have finally stopped, we decided to return the Index server back to the farm via the SharePoint Configuration wizard. When we click on a button “Search database instances” (don’t know the exact name in English, we have a Russian version), a correct database name and user are automatically appear in the relevant fields. Then we supply a password for the user and click “next” two times and the configuration begins. Unfortunately, at the second stage we receive the error “Could not connect to a configuration database” with the exception in the log file: “Exception: System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation.” Now we can’t figure out why the configuration wizard can’t connect to the configuration database. Any suggestions will be really appreciated.

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  • Calling Msbuild from Php - Wrong Codepage and Culture

    - by miasbeck
    I have a Php script that calls Msbuild via System: <?php system( "msbuild umlaut.proj" ); ?> This is the project file: <?xml version="1.0" encoding="UTF-8"?> <Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003" DefaultTargets="EchoUmlaut" ToolsVersion="3.5"> <Target Name="EchoUmlaut"> <Message Text="Umlaute: Ä Ö Ü ä ö ü ß" /> </Target> </Project> When I call Msbuild directly from the command line the output of msbuild is in German (as excpected) and the umlauts come out OK (I chcp to 1252). But when I use php to call msbuild the umlauts are wrong, and the output of msbuild is changed to English. I wonder what I can do to prevent this. C:\>chcp Aktive Codepage: 1252. C:\>msbuild umlaut.proj Microsoft (R)-Buildmodul, Version 3.5.30729.1 [Microsoft .NET Framework, Version 2.0.50727.3607] Copyright (C) Microsoft Corporation 2007. Alle Rechte vorbehalten. Das Erstellen wurde am 13.04.2010 08:57:04 gestartet. Projekt "D:\Cvsroot\projekte\e4elaui\v1.0\umlaut.proj" auf Knoten 0 (Standardziele). Umlaute: Ä Ö Ü ä ö ü ß Die Erstellung von Projekt "D:\Cvsroot\projekte\e4elaui\v1.0\umlaut.proj" ist abgeschlossen (Standardziele). Das Erstellen war erfolgreich. 0 Warnung(en) 0 Fehler Vergangene Zeit 00:00:00 C:\>php call_from_php.php Microsoft (R) Build Engine Version 3.5.30729.1 [Microsoft .NET Framework, Version 2.0.50727.3607] Copyright (C) Microsoft Corporation 2007. All rights reserved. Build started 13.04.2010 08:57:11. Project "D:\Cvsroot\projekte\e4elaui\v1.0\umlaut.proj" on node 0 (default targets). Umlaute: Ž ™ š „ ” á Done Building Project "D:\Cvsroot\projekte\e4elaui\v1.0\umlaut.proj" (default targets). Build succeeded. 0 Warning(s) 0 Error(s) Time Elapsed 00:00:00

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  • Jquery Fancybox not working after postback

    - by Lee Englestone
    I have a Fancybox (or more accurately) a number of fancy boxes on an asp.net page. My Fancybox (jquery plugin) works fine until a postback occurs on the page then it refuses to work. Any thoughts? Anyone experienced similar behaviour? UPDATE : Some Code.. I have a databound repeater with a fancybox on each repeating item. They are instanciated by (outside the repeater) $(document).ready(function() { $("a.watchvideo").fancybox({ 'overlayShow': false, 'frameWidth' : 480, 'frameHeight' : 400 }); }); The anchor tag is repeated.. href="#watchvideo_<%#Eval("VideoId")%" As is a div with id="watchvideo_<%#Eval("VideoId") %> As is a script element that instanciates the flash movies Yes the VideoIds are being output the the page. UPDATE : It's not a problem with the flash.. It is not a problem with the flash as i've tried it without the flash, it wont even pop a window with a simple message in. UPDATE : I wonder if it is the updatepanel. http://stackoverflow.com/questions/301473/rebinding-events-in-jquery-after-ajax-update-updatepanel -- lee

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  • MVC2 Apps (and others) sharing WCF services and authentication

    - by stupid-phil
    Hi, I've seen several similar scenarios explained here but not my particular one. I wonder if someone could tell me which direction to go in? I am developing two (and more later) MVC2 apps. There will also be another (thicker) client later on (WPF or Silverlight, TBD). These all need to share the same authentication. For the MVC2 apps they (preferably) need to be single log on - ie if a user logs in to one MVC2 app, they should be authorised on the other, as long as the cookie hasn't timed out. Forms authentication is to be used. All the apps need to use common business functionality and perform db access via a common WCF Service App. It would be nice (I think) if the WCF is not publicly accessible (ie blocked behind FW). The thicker client could use an additional service layer to access the Common WCF App. What this should look like is: MVCApp1 - WCFAppCommon MVCApp2 - WCFAppCommon ThickClient - WCFApp2 - WCFAppCommon Is it possible to carry out all the authentication/authorization in the WCFAppCommon? Otherwise I think I'll have to repeat all the security logic in the MVCApps and WCFApp2, whereas, to me, it seems to sit naturally in WCFAppCommon. On the otherhand, it seems if I authenticate/authorize in WCFAppCommon, I wouldn't be able to use Forms Authentication. Where I've seen possible solutions (that I haven't tried yet) they seem much more complex than Forms Authentication and a single DB. Any help appreciated, Phil

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  • AS 400 Performance from .Net iSeries Provider

    - by Nathan
    Hey all, First off, I am not an AS 400 guy - at all. So please forgive me for asking any noobish questions here. Basically, I am working on a .Net application that needs to access the AS400 for some real-time data. Although I have the system working, I am getting very different performance results between queries. Typically, when I make the 1st request against a SPROC on the AS400, I am seeing ~ 14 seconds to get the full data set. After that initial call, any subsequent calls usually only take ~ 1 second to return. This performance improvement remains for ~ 20 mins or so before it takes 14 seconds again. The interesting part with this is that, if the stored procedure is executed directly on the iSeries Navigator, it always returns within milliseconds (no change in response time). I wonder if it is a caching / execution plan issue but I can only apply my SQL SERVER logic to the AS400, which is not always a match. Any suggestions on what I can do to recieve a more consistant response time or simply insight as to why the AS400 is acting in this manner when I was using the iSeries Data Provider for .Net? Is there a better access method that I should use? Just in case, here's the code I am using to connect to the AS400 Dim Conn As New IBM.Data.DB2.iSeries.iDB2Connection(ConnectionString) Dim Cmd As New IBM.Data.DB2.iSeries.iDB2Command("SPROC_NAME_HERE", Conn) Cmd.CommandType = CommandType.StoredProcedure Using Conn Conn.Open() Dim Reader = Cmd.ExecuteReader() Using Reader While Reader.Read() 'Do Something End While Reader.Close() End Using Conn.Close() End Using

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  • How To Create Your Own x86 Operating System for Modern PC Computers

    - by mudge
    I'd like to create a new operating system for x86 PC computers. I'd like it to be 64-bit but possibly run as 32-bit as well. I have these kinds of questions: What kinds of things do you start working on first? Knowing where to start in writing your own operating system seems to me to be a tricky subject, so I am interested in your input. Generally how to go about making your own 32-bit/64-bit operating system, or good resources that mention useful information about going about writing your own operating system for x86 computers. I don't care how old sources are as long as they are still relevant and useful to what I am doing. I know that I will want it to have kernel drivers that access peripheral hardware directly. Where should I look for advice and documentation for programming and understanding the interface to peripheral hardware the operating system will communicate with? I will need to understand how the operating system will receive input and interact with keyboards, mice, computer monitors, hard drives, USB, etc. etc. This is probably the area I know least about. I have the Intel instruction set manuals and have been getting more familiar with assembly programming, so the CPU side of things is what I know the most about. At this point I'm thinking that I'd like to implement the Linux system calls within my operating system so that programs that run on Linux can run on my operating system. I want my operating system to use the ELF binary format. I wonder what obstacles I have to overcome to achieve this Linux compatibility. Are the main things implementing the system calls that Linux provides, and using the ELF format? What else? I am also interested in people's thoughts about why it might not be a good idea to make your own operating system, and why it is a good idea to make your own operating system. Thank you for any input.

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  • Binding a TreeView with ContextMenu in Xaml

    - by Michael Stoll
    I'm pretty new to Xaml and need some advise. A TreeView should be bound to a hierarchical object structure. The TreeView should have a context menu, which is specific for each object type. I've tried the following: <TreeView> <TreeView.Resources> <DataTemplate x:Key="RoomTemplate"> <TreeViewItem Header="{Binding Name}"> <TreeViewItem.ContextMenu> <ContextMenu> <MenuItem Header="Open" /> <MenuItem Header="Remove" /> </ContextMenu> </TreeViewItem.ContextMenu> </TreeViewItem> </DataTemplate> </TreeView.Resources> <TreeViewItem Header="{Binding Name}" Name="tviRoot" IsExpanded="True" > <TreeViewItem Header="Rooms" ItemsSource="{Binding Rooms}" ItemTemplate="{StaticResource RoomTemplate}"> <TreeViewItem.ContextMenu> <ContextMenu> <MenuItem Header="Add room"></MenuItem> </ContextMenu> </TreeViewItem.ContextMenu> </TreeViewItem> </TreeViewItem> But with this markup the behavior is as intended, but the child items (the rooms) are indented too much. Anyway all the bining samples I could find use TextBlock instead of TreeViewItem in the DataTemplate, but wonder how to integrate the ContextMenu there.

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  • VS2010 Text Editor: How do I set the default formatting style for inline code blocks?

    - by nukefusion
    I've got a problem with the formatting of inline code blocks within the VS2010 text editor and wonder if anyone else has had similar problems and found the 'magic' setting I'm looking for. I'm working my way through tutorials in an MVC book. Whenever I add some inline code blocks to a view I want them formatted like so: <% foreach (var link in Model) { %> <a href="<%=Url.RouteUrl(link.RouteValues)%>"> <%=link.Text%> </a> <% } %> What I'm actually getting is this (auto-formatted by the IDE when I finish writing the code): <% foreach (var link in Model) { %> <a href="<%=Url.RouteUrl(link.RouteValues)%>"> <%=link.Text%> </a> <% } %> It's pretty irritating. Any ideas on how I can instruct the IDE to leave my <% % tags alone? I've been fiddling with options under "Tools - Options - Text Editor" for ages but alas am getting nowhere...

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  • C# average function for large numbers without overflow exception

    - by Ron Klein
    .NET Framework 3.5. I'm trying to calculate the average of some pretty large numbers. For instance: using System; using System.Linq; class Program { static void Main(string[] args) { var items = new long[] { long.MaxValue - 100, long.MaxValue - 200, long.MaxValue - 300 }; try { var avg = items.Average(); Console.WriteLine(avg); } catch (OverflowException ex) { Console.WriteLine("can't calculate that!"); } Console.ReadLine(); } } Obviously, the mathematical result is 9223372036854775607 (long.MaxValue - 200), but I get an exception there. This is because the implementation (on my machine) to the Average extension method, as inspected by .NET Reflector is: public static double Average(this IEnumerable<long> source) { if (source == null) { throw Error.ArgumentNull("source"); } long num = 0L; long num2 = 0L; foreach (long num3 in source) { num += num3; num2 += 1L; } if (num2 <= 0L) { throw Error.NoElements(); } return (((double) num) / ((double) num2)); } I know I can use a BigInt library (yes, I know that it is included in .NET Framework 4.0, but I'm tied to 3.5). But I still wonder if there's a pretty straight forward implementation of calculating the average of integers without an external library. Do you happen to know about such implementation? Thanks!!

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  • Implementing Autocompletion in iPhone UITextField for contacts in address book

    - by nacho4d
    Hi, I would like to have a UITextField or UITextView in where as I do some input, alternatives will appear something similar to when you type an address in Mail Application, alternatives appear down and is possible tap them so get a better input user interface.(since there is no need to type the complete word or address or phone number) I do know how to fetch data from Address Book framework, also how to input text in UITextField/UITextView and its delegates but I don't know what kind of structure to use for fetching and showing data as the user do his/her input. I know basic CoreData if this matters, I hope I can get some help. UPDATE (2010/3/10): I don't have problem make a native-like GUI but I am asking about the algorithm, does any body knows what kind algorithm is best for this thing? maybe some binary tree? Or should I just fetch data from coredata everytime? Thanks Ignacio UPDATE (2010/03/28): I've been very busy these days, so I have not tried UISearchResults but it seems fine to me. BUT I wonder was there a necessity of deletion of the wining answer? I don't think is fair my reputation went down and couldn't see the winning answer. ;(

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