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  • Dividing a list in specific number of sublists

    - by Surya
    I want to divide a list in "a specific number of" sublists. That is, for example if I have a list List(34, 11, 23, 1, 9, 83, 5) and the number of sublists expected is 3 then I want List(List(34, 11), List(23, 1), List(9, 83, 5)). How do I go about doing this? I tried grouped but it doesn't seem to be doing what I want. PS: This is not a homework question. Kindly give a direct solution instead of some vague suggestions.

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  • Special simple random number generator

    - by psihodelia
    How to create a function, which on every call generates a random integer number? This number must be most random as possible (according to uniform distribution). It is only allowed to use one static variable and at most 3 elementary steps, where each step consists of only one basic arithmetic operation of arity 1 or 2. Example: int myrandom(void){ static int x; x = some_step1; x = some_step2; x = some_step3; return x; } Basic arithmetic operations are +,-,%,and, not, xor, or, left shift, right shift, multiplication and division. Of course, no rand(), random() or similar staff is allowed.

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  • MySql Query to return number of photos in each album

    - by GivenPie
    MY table is set up like this, all I need to do is call a query to my Photos table. I have PhotoID as the primary key and GalleryID as the foreign key to Gallery. How can I could the number of unique PhotoID's for each multiple GalleryIDs. So to speak there are may duplicate GalleryIDs because there are many photos in a gallery. So I just need to could the number of unique PhotoIDs associated with that GalleryID. Can it be done in one query?

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  • binary number comparison

    - by EquinoX
    If I have a 32 bit two's complement number and I want to know what is the easiest way to know of two numbers are equal... what would be the fastest bitwise operator to know this? I know xor'ing both numbers and check if the results are zero works well... any other one's? how about if a number is greater than 0?? I can check the 31'st bit to see if it's greater or equal to 0..but how about bgtz?

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  • number of methods in an interface.

    - by Jeow
    I know this might seem a controversial question but it really is not meant to be. is there an optimal number of methods in an interface. For example, I personally hate an interface with 20 methods. It is just difficult to implement. The contract seems to hard to maintain. Similarly if the number of methods is just 1. It makes me wonder if it is really a good abstraction. Any thoughts ?

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  • Finding a integer number after a beginning t=

    - by user2966696
    I have a string like this: 33 00 4b 46 ff ff 03 10 30 t=25562 I am only interested in the five digits at the very end after the t= How can I get this numbers with a regular expression out of it? I tried grep t=..... but I also got all characters including the t= in the beginning, which I would like to drop? After finding that five digit number, I would like to divide this by 1000. So in the above mentioned case the number 25.562. Is this possible with grep and regular expressions? Thanks for your help.

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  • php switch statement error on int = 0

    - by Jagdeep Singh
    I am having a problem in php switch case. When i set $number=0 it should run very first case but here this code returns 10-20K that is in second case. I checked comparison operators, tested them in if else case they return correct values but here first case do not run on $number=0 Why is this happening ? php consider 0 as false or something wrong in code ? Link to codepad paste http://codepad.org/2glDh39K also here is the code <?php $number = 0; switch ($number) { case ($number <= 10000): echo "0-10K"; break; case ($number > 10000 && $number <= 20000): echo "10-20K"; break; case ($number > 20000 && $number <= 30000): echo "20-30K"; break; case ($number > 30000 && $number <= 40000): echo "30-40K"; break; case ($number > 40000 && $number <= 50000): echo "40-50K"; break; case ($number > 50000 && $number <= 60000): echo "50-60K"; break; case ($number > 60000 && $number <= 70000): echo "60-70K"; break; case ($number > 70000 && $number <= 80000): echo "70-80K"; break; case ($number > 80000 && $number <= 90000): echo "80-90K"; break; case ($number > 90000): echo "90K+"; break; default: //default echo "N/A"; break; } ?>

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  • Windows update doesn't list update details, only the number of updates

    - by leodip
    Hi all, My system is Vista Business 32 bits SP2. When I click "Windows update", I can see there are 2 available optional updates. If I click the link "2 optional updates are available" to see what the updates are, I get: http://leodip.s3.amazonaws.com/windows%5Fupdate2.PNG The details about the updates are EMPTY. Any idea why this is happening? It doesn't happen only with optional updates, but with critical updates as well. I would like to fix this, so I can see what the updates are. Thanks!

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  • Port forward to different port number

    - by ThatGuyYouKnow
    I have a router that sets up rules like so: TCP Any -> 5800 Any -> 5900 UDP Any -> 5800 Any -> 5900 Computer: ip-address This would allow someone 'outside' to connect to my router's port 5800 and 5900 and forward that to the same port on my computer. My issue is that I want the 'outside' port to be different without changing the port on my computer.

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  • Issue with resetting auto increment from default to big number

    - by Sai Srikanth
    I have a MySQL table naming Invoice for a Inventory Monitoring site, invoice_number is bigint(19) AUTO_INCREMENT field. Currently AUTO_INCREMENT value is 1. Client want it to start the invoice_number from 50000. With the following script reset the ALTER TABLE INVOICES AUTO_INCREMENT = 50000; When I wrote an Insert Script to insert data in SQLDBX, it is putting the invoice_number from 50000. But when i am trying to do insert a record using the application(web application), the invoice_number value is starting from 1. We are making use of Spring-JDBC template to insert data into mysql database.

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  • Ethernet interface number changed, and old one does not exist, but does not leave IP address

    - by Sagar
    I have a virtual machine with Mandriva 2007.0 (yes, old - unfortunately we do not have a choice here). Anyway, the problem: Before reboot: active network interface = eth0. No other interfaces present, and network manager confirms this. Static IP address set to 172.31.2.22. No issues, everything working properly, routing et al. -------Reboot--------- After reboot: active network interface = eth1, with a DHCP address. Network manager shows eth0 as disconnected, and not connectable. When I try to set eth1 up with the static IP address (same one), it says "In Use". I then tried ifconfig eth0 172.31.2.29 just to free it up from the eth0 interface so I could use it with eth1 (since this is connected). Result: ifconfig eth0 172.31.2.29 SIOCSIFADDR: No such device eth0: unknown interface: No such device Nothing else changed. Any ideas what could be happening, or at least how I can get my IP address back?

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  • How to change font/number/bullet format for the whole list

    - by Nam Gi VU
    Hi, Let's look at a sample word 2010 file here. In this file you can see that the first group of text has their indent modified. The 2nd, 3rd group keep their default format. I want to apply the changed I've made in the group 1st so group 2nd and 3rd and for the new group I'm going to add instead of recieving the default indent. How can I do that? ps. Currently what I have to do is quite boring: Copy group 1 and paste to create new group to get the formatted, then remove the old text, adding new text :(

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  • Change the number of consecutive frequent ssh login before temporary blocking the user login

    - by Kenneth
    my server currently would temporarily refuse a user to login for certain amount of time (maybe ~20min) if the user consecutively frequent ssh login for 3 times. Can I change this behaviour (say relaxed the definition of frequent maybe from 'within 5 sec' to 'within 10 sec'; or increase the # of consecutive login from 3 to 5)? Thanks. Added: Ah.. now I think the problem was not with the ssh. I just tried on another newly installed server. consecutive successful login won't block the user. I have no sudo permission on the server I mentioned above. Now I suspect this behaviour may cause by the firewall in the system. Thanks everyone's comments. ADDED 2: Ah... after some searches. I think the server is using /sbin/iptables to do it as I can see the iptables program is there even though I don't have permission to list the rules. Thanks everyone, special thank to jaume and Mark!

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  • Apache maximum request number 256?

    - by victor hugo
    I have a very good server running an Apache instance with mod_jk for proxying the request to an Application server. I'm doing a load test and although I'm sending over 600 requests, the status worker keep showing this: 256 requests currently being processed, 0 idle workers I'm using 'prefork MPM' <IfModule prefork.c> ServerLimit 2048 StartServers 5 MinSpareServers 5 MaxSpareServers 10 MaxClients 1000 MaxRequestsPerChild 0 </IfModule> Is there a compiled limit for Apache to handle just 256 request or what would I be missing?

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  • Probability of failure with larger number of network elements

    - by MikeKulls
    I'm having a discussion with a work colleague. I'm saying that a network with 100 elements will have pretty much 10 times as many failures as a network with 10 elements, ie a tech will need to replace faulty hardware 10 times more often. He suggests that the failure rate doesn't go up in a linear fashion and the failure rate will be significantly less than 10x, in fact only slightly more failures. This is not the probability of an outage etc, we are just talking in relation to the amount of parts that a tech would need to swap out in a given time frame.

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  • Generic socket 940 CPU fan interchangeable with HP part number 411454-001

    - by ConcernedOfTunbridgeWells
    Hi, I'm trying to find a generic CPU fan that will fit the air duct in an XW9300. Note that there are two CPU fan mounting schemes used on this machine. One with two grommets in the motherboard that the CPU fan screws into and one with a plastic collar and base plate. The form factor I'm looking for is the former (see picture below): Two HP part numbers for fans in this form factor are 411454-001 (shown below) and 416055-001. Note that the dimensions are important as the machine has an air duct that fits over the fan. Can anyone tell me the manufacturer and model of an equivalent generic part? Better yet, do you know somewhere (preferrably in the UK) that I can obtain such an item from?

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  • Trying to determine the correct number of XFS allocation groups for postgresql server on Linux

    - by HBlend
    I am running a postgres 8.4.5 server on the linux 2.6.33.7 kernel on an 8 disk raid array with an LSI controller. Most of the tables are around 1GB or less. I know that XFS uses allocation groups (AG) to achieve I/O parallelism. My first question is, does this mean that if two tables are in the same AG, all I/O requests are queued to both of them if either is being read from/written to? If so, I assume I would want to spread my tables across as my allocation groups as possible, correct? Wouldn't this ensure that multiple users querying different tables would get the best performance?

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  • Word 2013: Get the page number for the previous page

    - by Mike Anthony
    I'm trying to accomplish something very simple in Word 2013, but the feature does not seem to be available, nor can I work it out with field codes. I simply want to include, on multiple pages, "continued from page n". In terms of field codes, I have tried this: { = PAGE - 1 \* MERGEFORMAT } It just tells me that PAGE is not a defined bookmark. Is there any way that this can be done? Edit: Per documentation I found somewhere, I also tried this - but with no luck: { = { PAGE } - 1 } This just threw Syntax Error, { back, which leads me to assume that it's incompatible with newer versions of Word.

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