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• Delivery terminology and order of magnitude

  - by Peter Turner

  What is the standard way of describing how software products are released and the proportionate order of magnitude to which the changes relative to the software product are conveyed? Is Release Update Patch Bug Fix redundant? or Is Update Patch too terse? As an end user I'd think that all bug fixes are patches (insofar as they are not 100% new code) and all patches should be updates (insofar as they don't degrade the product) and all updates should be releases (insofar as they are actually released), but this really doesn't help anyone understand why they need to get them. Then, if the person who makes the software change appends "critical" or "zero-day" in the notes, I would be unwise to leave the changes unapplied.

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• Rendering order in an Entity System

  - by Daedalus

  Say I use a basic ES approach, and also inside Systems I hold lists of all entities that Systems are required to process. How do I maintain this list of entities in desired rendering order, i.e. for a dumb 2D RenderingSystem? I saw this discussion, and what they suggest is to do something like Z ordering - what I would probably do is just to store a "layer" int in DrawableComponent and then, inside RenderingSystem, just sort entities by mentioned "layer" whenever the entity list for RenderingSystem changes. They also say we could just delete and recreate the entity whenever we want it on the top, but it seems too inflexible to me. How is this problem usually solved?

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• algorithm to print the digits in the correct order

  - by Aga Waw

  I've been trying to write an algorithm that will print separately the digits from an integer. I have to write it in Pseudocode. I know how to write an algorithm that reverse the digits. digi(n): while n != 0: x = n % 10 n = n // 10 print (x) But I don't know how to write an algorithm to print the digits in the correct order. f.eg. the input is integer 123467 and the output is: 1 2 3 4 6 7 The numbers will be input from the user, and we cannot convert them to a string. I just need help gettin started on writing algorithms. Thanks

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• Beginner Question: For extract a large subset of a table from MySQL, how does Indexing, order of tab

  - by chongman

  Sorry if this is too simple, but thanks in advance for helping. This is for MySQL but might be relevant for other RDMBSs tblA has 4 columns: colA, colB, colC, mydata, A_id It has about 10^9 records, with 10^3 distinct values for colA, colB, colC. tblB has 3 columns: colA, colB, B_id It has about 10^4 records. I want all the records from tblA (except the A_id) that have a match in tblB. In other words, I want to use tblB to describe the subset that I want to extract and then extract those records from tblA. Namely: SELECT a.colA, a.colB, a.colC, a.mydata FROM tblA as a INNER JOIN tblB as b ON a.colA=b.colA a.colB=b.colB ; It's taking a really long time (more than an hour) on a newish computer (4GB, Core2Quad, ubuntu), and I just want to check my understanding of the following optimization steps. ** Suppose this is the only query I will ever run on these tables. So ignore the need to run other queries. Now my questions: 1) What indexes should I create to optimize this query? I think I just need a multiple index on (colA, colB) for both tables. I don't think I need separate indexes for colA and colB. Another stack overflow article (that I can't find) mentioned that when adding new indexes, it is slower when there are existing indexes, so that might be a reason to use the multiple index. 2) Is INNER JOIN correct? I just want results where a match is found. 3) Is it faster if I join (tblA to tblB) or the other way around, (tblB to tblA)? This previous answer says that the optimizer should take care of that. 4) Does the order of the part after ON matter? This previous answer say that the optimizer also takes care of the execution order.

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• Test Driven Development Code Order

  - by Bobby Kostadinov

  I am developing my first project using test driven development. I am using Zend Framework and PHPUnit. Currently my project is at 100% code coverage but I am not sure I understand in what order I am supposed to write my code. Am I supposed to write my test FIRST with what my objects are expected to do or write my objects and then test them? Ive been working on completing a controller/model and then writing at test for it but I am not sure this is what TDD is about? Any advice? For example, I wrote my Auth plugin and my Auth controller and tested that they work properly in my browser, and then I sat down to write the tests for them, which proved that there were some logical errors in the code that did work in the browser.

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• Can someone recommend a good tutorial on MySQL indexes, specifically when used in an order by clause

  - by Philip Brocoum

  I could try to post and explain the exact query I'm trying to run, but I'm going by the old adage of, "give a man a fish and he'll eat for a day, teach a man to fish and he'll eat for the rest of his life." SQL optimization seems to be very query-specific, and even if you could solve this one particular query for me, I'm going to have to write many more queries in the future, and I'd like to be educated on how indexes work in general. Still, here's a quick description of my current problem. I have a query that joins three tables and runs in 0.2 seconds flat. Awesome. I add an "order by" clause and it runs in 4 minutes and 30 seconds. Sucky. I denormalize one table so there is one fewer join, add indexes everywhere, and now the query runs in... 20 minutes. What the hell? Finally, I don't use a join at all, but rather a subquery with "where id in (...) order by" and now it runs in 1.5 seconds. Pretty decent. What in God's name is going on? I feel like if I actually understood what indexes were doing I could write some really good SQL. Anybody know some good tutorials? Thanks!

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• What's the benefit of declaring class functions separately from their actual functionality?

  - by vette982

  In C++, what's the benefit of having a class with functions... say class someClass{ public: void someFunc(int arg1); }; then having the function's actual functionality declared after int main int main() { return 0; } void someClass::someFunc(int arg1) { cout<<arg1; } Furthermore, what's the benefit of declaring the class in a .h header file, then putting the functionality in a .cpp file that #includes the .h file?

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• Interface design where functions need to be called in a specific sequence

  - by Vorac

  The task is to configure a piece of hardware within the device, according to some input specification. This should be achieved as follows: 1) Collect the configuration information. This can happen at different times and places. For example, module A and module B can both request (at different times) some resources from my module. Those 'resources' are actually what the configuration is. 2) After it is clear that no more requests are going to be realized, a startup command, giving a summary of the requested resources, needs to be sent to the hardware. 3) Only after that, can (and must) detailed configuration of said resources be done. 4) Also, only after 2), can (and must) routing of selected resources to the declared callers be done. A common cause for bugs, even for me, who wrote the thing, is mistaking this order. What naming conventions, designs or mechanisms can I employ to make the interface usable by someone who sees the code for the first time?

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• What's the drawback to declare all the functions virtual in C++?

  - by skydoor

  Hi, If I am developing a class and I don't know who are going to use it. What's the drawback if I declare all the member functions virtual? It's a good design or bad design? Thanks so much! Regards.

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• php-cgi memory usage higher than php's memory limit

  - by Josh Nankin

  I'm running apache with a worker MPM and php with fastcgi. the following are my mpm limits: StartServers 5 MinSpareThreads 5 MaxSpareThreads 10 ThreadLimit 64 ThreadsPerChild 10 MaxClients 10 MaxRequestsPerChild 2000 I've also setup my php-cgi with the following: PHP_FCGI_CHILDREN=5 PHP_FCGI_MAX_REQUESTS=500 I'm noticing that my average php-cgi process is using around 200+mb of RAM, even as soon as they are started. However, my php memory_limit is only 128M. How is this possible, and what can I do to lower the php-cgi memory consumption?

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• Processor with higher FSB than motherboard can support.

  - by Wesley

  Hi all, Please redirect me if there is a similar question, but I have an ECS P4VXASD2+ (V5.0) motherboard, which supports a 533 MHz FSB. I want to put in a Pentium 4 3.2 GHz processor (Socket 478) with an FSB of 800 MHz. Would this be possible? Would the FSB of the processor just be limited to 533 MHz? Thanks in advance.

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• ubuntu can't support a higher resolution that my laptop can support

  - by michael

  Hi, I have a HP laptop which can support 1600x900. But after I install ubuntu 9.10 on it, it can only support up to 1280x700. My laptop has a Nvidia graphics card. And i am using GNOME as my desktop environment. Can you please tell me how can I configure ubuntu 9.10 to have 1600x900? Thank you.

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• How to write files in specific order?

  - by Bernie

  Okay, here's a weird problem -- My wife just bought a 2014 Nissan Altima. So, I took her iTunes library and converted the .m4a files to .mp3, since the car audio system only supports .mp3 and .wma. So far so good. Then I copied the files to a DOS FAT-32 formatted USB thumb drive, and connected the drive to the car's USB port, only to find all of the tracks were out of sequence. All tracks begin with a two digit numeric prefix, i.e., 01, 02, 03, etc. So you would think they would be in order. So I called Nissan Connect support and the rep told me that there is a known problem with reading files in the correct order. He said the files are read in the same order they are written. So, I manually copied a few albums with the tracks in a predetermined order, and sure enough he was correct. So I copied about 6 albums for testing, then changed to the top level directory and did a "find . music.txt". Then I passed this file to rsync like this: rsync -av --files-from=music.txt . ../Marys\ Music\ Sequenced/ The files looked like they were copied in order, but when I listed the files in order of modified time, they were in the same sequence as the original files: ../Marys Music Sequenced/Air Supply/Air Supply Greatest Hits ls -1rt 01 Lost In Love.mp3 04 Every Woman In The World.mp3 03 Chances.mp3 02 All Out Of Love.mp3 06 Here I Am (Just When I Thought I Was Over You).mp3 05 The One That You Love.mp3 08 I Want To Give It All.mp3 07 Sweet Dreams.mp3 11 Young Love.mp3 So the question is, how can I copy files listed in a file named music.txt, and copy them to a destination, and ensure the modification times are in the same sequence as the files are listed?

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• php-cgi memory usage higher than php's memory limit

  - by Josh Nankin

  I'm running apache with a worker MPM and php with fastcgi. the following are my mpm limits: StartServers 5 MinSpareThreads 5 MaxSpareThreads 10 ThreadLimit 64 ThreadsPerChild 10 MaxClients 10 MaxRequestsPerChild 2000 I've also setup my php-cgi with the following: PHP_FCGI_CHILDREN=5 PHP_FCGI_MAX_REQUESTS=500 I'm noticing that my average php-cgi process is using around 200+mb of RAM, even as soon as they are started. However, my php memory_limit is only 128M. How is this possible, and what can I do to lower the php-cgi memory consumption?

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• DVI-D connection does not display properly at higher resolutions (2560 x 1440)

  - by Cromulent

  I have two computers connected to a Dell U2711 monitor. A PC which is connected using DisplayPort and a Mac connected using DVI-D. The PC displays 2560 x 1440 resolutions perfectly but when I try and set that resolution on the Mac it displays in an extremely fuzzy manner. So fuzzy in fact that I can hardly read the text on the screen. I've tried the Mac out connected via DisplayPort (unfortunately the monitor only has one DisplayPort connection) and it worked perfectly. I also had it connected via DVI-D in the past and it worked then. For some reason it just does not work anymore. I was wondering if this problem might be caused by a dodgy cable or perhaps not having the correct one. Can anyone think of what the issue might be? I've checked out the DVI-D spec and it should be able to display resolutions of 2560 x 1440 correctly.

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• Combine Multiple Audio Files into a single higher-quality audio File

  - by namenlos

  BACKGROUND My team gave a demo to a large audience - we recorded the audio of the demo in multiple locations in the room (3) the audio was recorded using cheap laptop microphones I was not involved in the recording of the audio or the demo Both audio files suck in some form the first one is of a recording near the speaker - which clearly gets his voice but the the audience is audience is muffled - also this one is slightly noisy The second recording was done in the middle of the audience - it gets the audience questions clearly but actually gets the speaker rather sometimes well and sometimes poorly (not all the speakers spoke loudly enough to be heard) MY QUESTION Is there any techinque or software which can be used to merge these audio files in such a way that the best qualities of each are preserved. I am NOT asking now to simply merge them together in one track - I've already done that in Audacity and it is certainly better - what I am looking for could be considered closer to how HDR images are created - multiple exposures combined into an enhanced new version which is not simply an average of the inputs. NOTE Am not an "Audio" guy - just a normal user

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• How to get a higher resolution on Ubuntu 11.04 using an intel chipset

  - by Saif Bechan

  I have a bit slow PC here, so I decided to put Ubuntu 11.04 on it. It use to run Windows Vista on a resolution of 1280x1024, so both my hardware and monitor support it. Now I'm on Ubuntu, but can only run 1024x768, and the screen is not that bright. Its like when you don't have the right drivers on a Windows machine. Now i'm new to linux, so I do not know what do do. I have an onboard Intel chipset i965. Maybe this is some useful information, I read something about it on a forum: lspci 00:00.0 Host bridge: Intel Corporation 82G33/G31/P35/P31 Express DRAM Controller (rev 02) 00:02.0 VGA compatible controller: Intel Corporation 82G33/G31 Express Integrated Graphics Controller (rev 02) 00:1b.0 Audio device: Intel Corporation N10/ICH 7 Family High Definition Audio Controller (rev 01) 00:1c.0 PCI bridge: Intel Corporation N10/ICH 7 Family PCI Express Port 1 (rev 01) 00:1c.1 PCI bridge: Intel Corporation N10/ICH 7 Family PCI Express Port 2 (rev 01) 00:1d.0 USB Controller: Intel Corporation N10/ICH 7 Family USB UHCI Controller #1 (rev 01) 00:1d.1 USB Controller: Intel Corporation N10/ICH 7 Family USB UHCI Controller #2 (rev 01) 00:1d.2 USB Controller: Intel Corporation N10/ICH 7 Family USB UHCI Controller #3 (rev 01) 00:1d.3 USB Controller: Intel Corporation N10/ICH 7 Family USB UHCI Controller #4 (rev 01) 00:1d.7 USB Controller: Intel Corporation N10/ICH 7 Family USB2 EHCI Controller (rev 01) 00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev e1) 00:1f.0 ISA bridge: Intel Corporation 82801GB/GR (ICH7 Family) LPC Interface Bridge (rev 01) 00:1f.1 IDE interface: Intel Corporation 82801G (ICH7 Family) IDE Controller (rev 01) 00:1f.2 IDE interface: Intel Corporation N10/ICH7 Family SATA IDE Controller (rev 01) 00:1f.3 SMBus: Intel Corporation N10/ICH 7 Family SMBus Controller (rev 01) 02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 01) 03:03.0 FireWire (IEEE 1394): VIA Technologies, Inc. VT6306/7/8 [Fire II(M)] IEEE 1394 OHCI Controller (rev c0) Can someone please tell me how I can get the screen better? saif@sodium:~$ xrandr Screen 0: minimum 320 x 200, current 1024 x 768, maximum 4096 x 4096 VGA1 connected 1024x768+0+0 (normal left inverted right x axis y axis) 0mm x 0mm 1024x768 60.0* 800x600 60.3 56.2 848x480 60.0 640x480 59.9

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• Custom built machine has much higher power consumption than expected

  - by foraidt

  I built a machine according to the specs of a computer magazine (c't, Germany). According to the magazine, the power consumption should be at around 10W. I don't want to go into the specifics of the hardware but rather ask for general advice on where to look: I updated the BIOS/UEFI version to the latest version, installed all the recommended drivers and unplugged all hardware that's not necessary to boot into Windows. All that was left is the power supply, mainboard, cpu, cpu cooler and one SSD drive. But still I measured a power consumption of 50W, which is 40W more than it should be. I tried booting Linux Mint from a USB stick, so I don't think it's some Windows-related problem.. Where else could I look? Update 1 I dind't want the question to get closed for being too localized but if more details are necessary, here they are: The system is a desktop PC. The power consumption is measured using a Brennenstuhl PM 231 device, which was tested also by c't and they found it quite accurate. The PSU is an Enermax ETL300AWT, the mainboard Intel DH87RL (Socket 1150) and the CPU Intel G3220 (Haswell). Update 2 There is no online version of the article*. The most details I found can be read on its project page (in German, though...) (*)You can pay for downloadable PDFs, however. English translation of that project page Update 3 Regarding the sceptics: It may sound ridiculous but apparently 10W idle consumption is possible with Intel's Haswell architecture. As a kind of proof, there's an additional Blog article explicitly listing the steps needed to reduce the idle consumption to 10W. Additional hardware: I measured the consumption without the HDD, and as expected the usage dropped by around 10W. I have no chassis fans and the CPU fan is a "Scythe Mugen 4" model. It runs at around 600rpm so I think it won't draw much. When stripping off all my extra components I should be at 10W. But I'm not getting anywhere near that. I would be happy to see "just" 15W in the stripped down version but currently I'm not getting below 50W no matter which component I remove. As I see it this cannot be explained by the PSU being less efficient at lower consumption. I also waited half an hour or so (also checked that no Windows updates were running in the background) and the consumption dind't drop by more than a few watts.

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• Processor with higher FSB than motherboard can support.

  - by Wesley

  Hi all, Please redirect me if there is a similar question, but I have an ECS P4VXASD2+ (V5.0) motherboard, which supports a 533 MHz FSB. I want to put in a Pentium 4 3.2 GHz processor (Socket 478) with an FSB of 800 MHz. Would this be possible? Would the FSB of the processor just be limited to 533 MHz? Thanks in advance.

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• Can using higher rated battery damage device?

  - by Anwar Shah

  I am in need of a battery for my Lenovo 3000 Y410 Laptop. It's installed battery has voltage rating of 10.8v. But the shop i've consulted has only a battery of 11.1v rating. Should I buy the battery? I mean, Does using that battery can damage my laptop? An answer with some good source from hardware vendor will be very much helpful. Please do not just put your opinion. Because I do not see any difference in your opinion and my opinion. My opinion is also "It is bad". But I need some reliable source.

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• Looking for Mini itx capable of running Photoshop + Illustrator (cs4 or higher)

  - by drozzy

  Ok, so I want to build a small pc for my gf that she can take with her instead of the crappy laptop that she has. Overall I think the complete system should not weight more than 10 lbs. The requirements are to run at least 4 applications simultaneously, and be able to switch between them with no problems: Photoshop Illustrator Word editor Browser Should be able to handle 1920x1200 resolution. I am currently looking at LGA775 socket as I can just transfer my desktop cpu Q6600 to it. Currently deciding between DQ45EK and DG41TX, but any other suggestions are welcome. So I am thinking something along the lines of: MINI-BOX M350 Case with 90 watt psu Q6600 cpu (my desktop cpu) 2x2GB kingston ram (or similar) Video? Need external or built-in G45 on DQ45EK will do? My primary concern is whether the 90WATT is sufficient of the Q6600? Thanks

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• Will a higher hard drive size affect performance

  - by user273010

  My laptop came with a 500 GB hard drive. I use my laptop for storing my digital photographs, and only have about 14 GB of file storage left on the original hard drive. I have a 750 GB external hard drive, but am leery of relying on it for primary storage as I tend to knock things over and it has already crashed once and I lost a lot of the files. I am looking at a 1 TB internal hard drive, but am concerned if storing so much data will affect the computer's performance. Should I also increase RAM from 4 to 8 GB (the limit for my 64-bit, Windows 7, Asus A54C laptop)?

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• xrandr fails when 3rd monitor has higher resolution

  - by Pi3cH

  I tried many combinations with xrandr command under lubuntu 12.04 to setup my three monitors DVI (DELL 1) left detected as HDMI1 HDMI (LG E2290) middle detected as HDMI2 VGA (DELL 2) right detected as VGA1 I can get the display with fix 1280x1024 on all the monitors. But once I setup 1280x1024 + 1920x1080 + 1280x1024, I get blank screen on all the monitors. Sometimes it throws crts fail error instead of blanking out. Anyone have similar issues? any solutions/workarounds? P.S. I can setup two monitors using 1280x1280 and 1920x1080 P.S.S. HDMI2 required at least 1920x1080 to display sharp picture. Outputs (it seems graphic card supports up to 8192x8192): xrandr Screen 0: minimum 320 x 200, current 3840 x 1024, maximum 8192 x 8192 VGA1 connected 1280x1024+2560+0 (normal left inverted right x axis y axis) 338mm x 270mm 1280x1024 60.0*+ 75.0 1152x864 75.0 1024x768 75.1 60.0 800x600 75.0 60.3 640x480 75.0 60.0 720x400 70.1 HDMI1 connected 1280x1024+0+0 (normal left inverted right x axis y axis) 376mm x 301mm 1280x1024 60.0*+ 75.0 1152x864 75.0 1024x768 75.1 60.0 800x600 75.0 60.3 640x480 75.0 60.0 720x400 70.1 HDMI2 connected 1280x1024+1280+0 (normal left inverted right x axis y axis) 477mm x 268mm 1920x1080 60.0 + 1680x1050 60.0 1280x1024 75.0 60.0* 1152x864 75.0 1024x768 75.1 60.0 800x600 75.0 60.3 640x480 75.0 60.0 720x400 70.1 DP1 disconnected (normal left inverted right x axis y axis) DP2 disconnected (normal left inverted right x axis y axis) 3 CRTs (0,1 VGA, 0,1,2 for other HDMI) xrandr --verbose VGA1 connected 1280x1024+2560+0 (0x47) normal (normal left inverted right x axis y axis) 338mm x 270mm Identifier: 0x42 Timestamp: 51324 Subpixel: unknown Gamma: 1.0:1.0:1.0 Brightness: 1.0 Clones: CRTC: 0 CRTCs: 0 1 ... HDMI1 connected 1280x1024+0+0 (0x47) normal (normal left inverted right x axis y axis) 376mm x 301mm Identifier: 0x43 Timestamp: 51324 Subpixel: unknown Gamma: 1.0:1.0:1.0 Brightness: 1.0 Clones: CRTC: 1 CRTCs: 0 1 2 ... HDMI2 connected 1280x1024+1280+0 (0x47) normal (normal left inverted right x axis y axis) 477mm x 268mm Identifier: 0x44 Timestamp: 51324 Subpixel: unknown Gamma: 1.0:1.0:1.0 Brightness: 1.0 Clones: CRTC: 2 CRTCs: 0 1 2 Below command fails: xrandr --output VGA1 --auto --output HDMI2 --auto --left-of VGA1 --output HDMI1 --auto --left-of HDMI2 Below command passes: xrandr --output VGA1 --auto --output HDMI2 --mode 1280x1024 --rate 60.0 --left-of VGA1 --output HDMI1 --auto --left-of HDMI2 Graphic card VGA compatible controller: Intel Corporation Ivy Bridge Graphics Controller (rev 09)

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• SSH Server Timeout on port 22 but not on higher port

  - by mikelberger

  If I run an SSH server on my Windows 2008 server box on the default port 22 I always get Operation Timed Out on the client. If I run it on another port (say 2222) it works fine. I've opened up the firewall. Netstat shows that the server is listening on the correct port. I have used two different Windows SSH servers (freeSSHd and WinSSHD) and they both have the same result. What else could be causing the difference between running the SSH server on port 22 versus port 2222?

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• Getting higher resolution than Monitor supports

  - by user35112

  I have DG43NB mobo, that have onboard X4500 graphics. Its supports 1900 x 1200 Resolution. But my LCD monitor is only capable of resolution 1024 x 768. I have to test some websites in resolution 1900 x 1200, how can i test? Is there any concept of virtual desktop using which i can simulate resolution 1900 x 1200. I have windows xp installed. thanks

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