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  • Is it okay to use array[key] in PHP?

    - by terrani
    Hi, I have a simple question. Is it okay to use array without single or double quotion like $array[key]? I thought it is bad because PHP look for constant first if I don't use single or doulbe quotion. One of my colleagues told me that it does not matter. WHat do you guys think?

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  • prefill a std::vector at initialization?

    - by user146780
    I want to create a vector of vector of a vector of double and want it to already have (32,32,16) elements, without manually pushing all of these back. Is there a way to do it during initialization? (I dont care what value gets pushed) Thanks I want a 3 dimensional array, first dimension has 32, second dimension has 32 and third dimension has 16 elements

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  • Add jQuery colorbox plugin to a dynamically created element, extra problem.

    - by PapiChuloMX
    I saw the answer of a question: http://stackoverflow.com/questions/2443490/add-jquery-colorbox-plugin-to-a-dynamically-created-element Solve part of the problem, works fine, but when I click for second time, it doesn't work. When I try to click for second time an error displays: $.fn.colorbox is not a function. How can i correct that error and avoid a double click to bind colorbox. I don't speak english, i did my best to write this words, i hope you can read me. Thanks.

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  • How to store array in session in asp.net mvc?

    - by mary
    Can you please tell me how to store an array in session and how to retrieve that array from session? I am trying to store one array of type Double and assigning values of the same type but it is showing me an error so please can anyone tell me how to assign values to the array which is in session? Thank You

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  • Problem with java and conditional (game of life)

    - by Muad'Dib
    Hello everybody, I'm trying to implement The Game of Life in java, as an exercise to learn this language. Unfortunately I have a problem, as I don't seem able to make this program run correctly. I implemented a torodial sum (the plane is a donut) with no problem: int SumNeighbours (int i, int j) { int value = 0; value = world[( i - 1 + row ) % row][( j - 1 + column ) % column]+world[( i - 1 + row ) % row][j]+world[( i - 1 + row ) % row][( j + 1 ) % column]; value = value + world[i][( j - 1 + column ) % column] + world[i][( j + 1 ) % column]; value = value + world[( i + 1 ) % row][( j - 1 + column ) % column] + world[( i + 1 ) % row][j]+world[ ( i+1 ) % row ][( j + 1 ) % column]; return value; } And it sums correctly when I test it: void NextWorldTest () { int count; int [][] nextWorld = new int[row][row]; nextWorld = world; for (int i=0; i<row; i++) { for (int j=0; j<column; j++) { count = SumNeighbours(i,j); System.out.print(" " + count + " "); } System.out.println(); } world=nextWorld; } Unfortunately when I add the conditions of game of life (born/death) the program stop working correctly, as it seems not able anymore to count correctly the alive cells in the neighborhood. It counts where there are none, and it doesn't count when there are some. E.g.: it doesn't count the one below some living cells. It's a very odd behaviour, and it's been giving me a headache for 3 days now... maybe I'm missing something basic about variables? Here you can find the class. void NextWorld () { int count; int [][] nextWorld = new int[row][column]; nextWorld = world; for (int i=0; i<row; i++) { for (int j=0; j<column; j++) { count = SumNeighbours(i,j); System.out.print(" " + count + " "); if ( ( world[i][j] == 0) && ( count == 3 ) ) { nextWorld[i][j] = 1; } else if ( ( world[i][j] == 1 ) && ( (count == 3) || (count == 2) )) { nextWorld[i][j] = 1; } else { nextWorld[i][j]=0; } } System.out.println(); } world=nextWorld; } } Am I doing something wrong? Below you can find the full package. package com.GaOL; public class GameWorld { int [][] world; int row; int column; public int GetRow() { return row; } public int GetColumn() { return column; } public int GetWorld (int i, int j) { return world[i][j]; } void RandomGen (int size, double p1) { double randomCell; row = size; column = size; world = new int[row][column]; for (int i = 0; i<row; i++ ) { for (int j = 0; j<column; j++ ) { randomCell=Math.random(); if (randomCell < 1-p1) { world[i][j] = 0; } else { world[i][j] = 1; } } } } void printToConsole() { double test = 0; for (int i=0; i<row; i++) { for (int j=0; j<column; j++) { if ( world[i][j] == 0 ) { System.out.print(" "); } else { System.out.print(" * "); test++; } } System.out.println(""); } System.out.println("ratio is " + test/(row*column)); } int SumNeighbours (int i, int j) { int value = 0; value = world[( i - 1 + row ) % row][( j - 1 + column ) % column]+world[( i - 1 + row ) % row][j]+world[( i - 1 + row ) % row][( j + 1 ) % column]; value = value + world[i][( j - 1 + column ) % column] + world[i][( j + 1 ) % column]; value = value + world[( i + 1 ) % row][( j - 1 + column ) % column] + world[( i + 1 ) % row][j]+world[ ( i+1 ) % row ][( j + 1 ) % column]; return value; } void NextWorldTest () { int count; int [][] nextWorld = new int[row][row]; nextWorld = world; for (int i=0; i<row; i++) { for (int j=0; j<column; j++) { count = SumNeighbours(i,j); System.out.print(" " + count + " "); } System.out.println(); } world=nextWorld; } void NextWorld () { int count; int [][] nextWorld = new int[row][column]; nextWorld = world; for (int i=0; i<row; i++) { for (int j=0; j<column; j++) { count = SumNeighbours(i,j); System.out.print(" " + count + " "); if ( ( world[i][j] == 0) && ( count == 3 ) ) { nextWorld[i][j] = 1; } else if ( ( world[i][j] == 1 ) && ( (count == 3) || (count == 2) )) { nextWorld[i][j] = 1; } else { nextWorld[i][j]=0; } } System.out.println(); } world=nextWorld; } } and here the test class: package com.GaOL; public class GameTestClass { public static void main(String[] args) { GameWorld prova = new GameWorld(); prova.RandomGen(10, 0.02); for (int i=0; i<3; i++) { prova.printToConsole(); prova.NextWorld(); } } }

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  • Custom Floating Point Representation

    - by Abion47
    I'm trying to write a parser that will read a particular file type, and I need to map the different data types to C# equivalents. Most of them aren't that difficult, but I'm having trouble wrapping my head around what "int16 with a bias of 14" means. I've deduced that it's some kind of floating point type, so my best bet would be to write a converter that would map it to a float, double, or decimal type. I'm not sure where to take it from here, though.

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  • C/C++ variable length automatic array performance

    - by aaa
    hello. Is there significant cpu/memory overhead associated with using automatic arrays with g++/Intel on 64-bit x86 linux platform? int function(int N) { double array[N]; overhead compared to allocating array before hand (assuming function is called multiple times) overhead compared to using new overhead compared to using malloc range of N maybe from 1kb to 16kb roughly, stack overrun is not a problem Thank you

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  • C++ Question on the pow function.

    - by Sagistic
    I'm trying to get this expression to work, I'm pretty sure its not the parenthesis because I counted all of them. Perhaps there something I'm doing wrong involving the parameter pow (x,y). double calculatePeriodicPayment() { periodicPaymentcalc = (loan * ((interestRate / yearlyPayment))) / (1-((pow ((1+(interestRate / yearlyPayment)))),(-(yearlyPayment * numOfYearLoan)))); return periodicPaymentcalc; }

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  • Block an Order Button

    - by Frank G.
    I am looking for a script that will block or remove an order button to prevent customers from double or triple ordering but clicking the button more then once. I don't know what something like this would be called. But the site was developed in Classic .asp. However I'm going to guess and say this would be javascript or jquery on an image button? Any suggestion or points for this would be a big help!!!! Thanks,

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  • % operator for time calculation

    - by Chris
    I am trying to display minutes and seconds based on a number of seconds. I have: float seconds = 200; float mins = seconds / 60.0; float sec = mins % 60.0; [timeIndexLabel setText:[NSString stringWithFormat:@"%.2f , %.2f", mins,seconds]]; But I get an error: invalid operands of types 'float' and 'double' to binary 'operator%' And I don't understand why... Can someone throw me a bone!?

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  • DirectAccess client can't connect

    - by odd parity
    I've set up a DirectAccess server on Windows Server 2012 at my workplace. I'm using a Windows 8 Enterprise client to connect to it. It works fine over a mobile connection, but it fails when connecting from home. I've ruled out the firewall/router as the culprit as the issues persist when connecting the laptop directly to the cable modem. I'm not sure where to begin to debug this, does anyone have any pointers? Both Teredo and IPHTTPS interfaces are up (although as the server is behind a NAT and we only have 1 public IP I understand that IPHTTPS is the only protocol that will be used). The IPHTTPS tunnel also seems to be connected: netsh interface httpstunnel show interfaces Interface IPHTTPSInterface (Group Policy) Parameters ------------------------------------------------------------ Role : client URL : https://redacted:443/IPHTTPS Last Error Code : 0x0 Interface Status : IPHTTPS interface active however the DirectAccess link can't be activated - get-daconnectionstatus cycles between Status : Error Substatus : CouldNotContactDirectAccessServer and Status : Error Substatus : RemoteNetworkAuthenticationFailure Any suggestions on how to attack this are appreciated!

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  • Troubleshooting PXE-E11: ARP Timeout error under VMware ESXi 4 and HPSA 7.8

    - by warren
    I am running HP Server Automation v7.8 in a lab environment on VMware ESXi, managed via vSphere 4. On the same host I have several small VMs for OS provisioning testing (512MB RAM, 10GB hdd, one NIC on the same vSwitch that HPSA is running on). DHCP is configured to hand-out addresses in the 192.168.10.151-200 range. On boot of the VM, it receives an IP (eg 192.168.10.198) within seconds. However, after it receives its IP, a PXE-E11: ARP Timeout error occurs in trying to boot from the DHCP server. I do not know if this is a HPSA-specific error, as I have seen reports of the PXE-E11 error on various forums. Proposed solutions I have seen so far (changing VLAN settings, for example) have not been applicable to my environment. Are there any pointers/troubleshooting steps that can be taken to resolve this?

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  • Removing duplicate images (deduplication) - calculating "overlap" of images

    - by jotango
    Hello, I have a ton of product images on our file system. Our code removes 100% identical images (or does not allow them to be uploaded). However our sellers often upload items pictures which are very similar, but not exactly. They could have more whitespace, a worse quality (compression), a different size etc. Is there any way I can calculate the degree of overlap between two images, to flag ones for deletion? Kind of like a Levenshtein distance between two images... Any pointers would be very cool. Thanks!

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  • OS X not booting after upgrading LibXML2

    - by Federico
    I tried upgrading the version of LibXML2 in my machine to run some propietary software. Compiled as 32-bit (-arch i386) and restarted to see if it worked. Now when I try to boot I can only get into the spinning screen and it just sits there. Restarting in verbose mode (Cmd-V) does not show any error in the process, it just freezes after "AppleIntelCPUPowerManagement: initialization complete". I can't from any CD either (if I press c on startup it just spins the disk around and then stops in the same spinner screen). I've also reset the PRAM/NVRAM to discard any problems with that and it´s still not fixed. Any pointers of what might´ve gone wrong? (Latest gen MBP, running 10.6.3)

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  • Routing all Traffic through OpenVPN Tunnel

    - by Filip Ekberg
    I have installed OpenVPN server on Archlinux and am now using OpenVPN GUI on Windows 7, I can talk to other computers connected through the VPN but I have not yet figured out how to route all traffic through the tunnel. How do I do this? I figured I need to do it with route ( cmd command ) but I think i need some pointers here. I've followed the OpenVPN HowTo on the matter but that doesn't work, it simply doesn't push the "force the client to go through this gateway"-option. And changing from OpenVPN to a PPTP / IPSec alternative is not an option at the moment.

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  • how to multi-boot/upgrade linux from LVM-based partition

    - by kenny-bobby
    i currently have FC3 linux which installed itself on the hard disk using LVM partitioning, so it is basically all one big partition. i would like to try some other distributions and upgrade to something newer, but don't want to lose my current capabilities and data files, and i know nothing or less about LVM. Is it possible (and if so an example would be nice) to install a non-LVM-based distribution on the LVM disk and have multi-boot options? Or do i have to start over new and drop the LVM? My guess is that i should save my /home (data files and .rc files) on a backup device first, then somewhere/somehow create a new partion for installing another distribution. Any LVM experts out there that have tried anything like this--well i sure could use some pointers and advice...

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  • Linode - Centos 5.5 -

    - by Marcus West
    Hi, I rather foolishly undertook to install a control panel on a Linode. I opted to use CentOs 5.5 (either ordinary or 64 bit) but I am like a monkey playing a reward game... I have some idea of what I am doing, but not enough.... In certain areas I am hopeless....do I install Webmin/virtualmin, or ISP Config..... ISP Config 2 or 3? I would employ someone to help, but how do i find the right person? Where can i learn the ropes on all this? There seems to be no systematic training, and even when I try to research college courses in the UK, I am none the wiser as to where I could go to learn how to run a Linux server..... Has anyone any pointers? Right now I am looking at th esecurity aspects of the server.....rkhunter , denyhosts etc... Any advice on installing and maintaining these things? Cheers marcus

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  • Unable to access VLAN host from VLAN interface in CentOS

    - by Amrit
    I am playing with VLAN (Virtual LAN) configuration on CentOS 6.4. I have 2 interfaces, eth0 and eth1. I have configured 2 VLAN interfaces eth0.20 and eth0.30 as #file: ifcfg-eth0.20 #------------- VLAN=yes DEVICE=eth0.20 TYPE=Ethernet ONBOOT=yes NM_CONTROLLED=no BOOTPROTO=static IPADDR=192.168.20.1 GATEWAY=192.168.20.1 NETMASK=255.255.255.0 USERCTL=no #file: ifcfg-eth0.30 #------------- VLAN=yes DEVICE=eth0.30 TYPE=Ethernet ONBOOT=yes NM_CONTROLLED=no BOOTPROTO=static IPADDR=192.168.30.1 GATEWAY=192.168.30.1 NETMASK=255.255.255.0 USERCTL=no Then connected a desktop to interface eth0 port using LAN cable and assigned 192.168.30.2/24 IP. When I try to ping 192.168.30.1 from 192.168.30.2 machine, It shows destination host unreachable. I am also not able to ping 192.168.130.2 from 192.168.30.1. However ping -I eth0 192.168.30.2 works fine. Any pointers?

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  • Open vSwitch and Xen Private Networks

    - by Joe
    I've read about the possibilities of using Open vSwitch with Xen to route traffic between domUs on multiple physical hosts. I'd like to be able to group the multiple domUs I have spread out across multiple physical hosts into a number of private networks. However, I've found no documentation on how to integrate Open vSwitch with Xen (rather than XenServer) and am unsure how I should go about doing so and then creating the private networks described. As you might have gathered then - from research I think Open vSwitch can do what I need it to, but I just can't find anything giving me a push in the right direction of how to actually use it to do so! This may well be because Open vSwitch is quite new (version 1.0 released on May 17). Any pointers in the right direction would be much appreciated!

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  • Changing default gateway on workstations connected to Windows Domain SBS server

    - by Gary B2312321321
    We have xp workstations connected onto a small business server acting as active directory/isa firewall/proxy (no dhcp). Is there a reason that after installing a 2nd firewall on the network (same subnet etc), that changing the default gateway on the workstations isnt sufficient to route inet traffic through the new firewall? A freshly setup linux box connects straight on to the alternate firewall with just ip, default gateway. dns settings. Will having ISA still active on the network confuse the process? Are there further config settings deeper down in windows that need attention? Any ideas pointers on this would be appreciated? Other info: Firewalls tried: Smoothwall and Ipcop; small ethernet netwoork 40 pcs; can ping to new firwalls from workstations; activating web proxy on new firewall and reconfiguring workstation browser works fine; Point of 2nd firewall is lack of some necessary features on ISA for a linux app; Would be nice to have some redundancy to though

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  • sqlsrv not showing up in my phpinfo

    - by sirg45
    I have just installed php 5.3 on windows server 2008 R2 running IIS7. phpinfo() is working fine. now I want to see if I have correctly installed the Microsoft Drivers for PHP for SQL Server. I downloaded from here: http://www.microsoft.com/downloads/en/details.aspx?FamilyID=80E44913-24B4-4113-8807-CAAE6CF2CA05#RelatedResources I have dropped the 2 dlls (php_pdo_sqlsrv_53_nts_vc9.dll and php_sqlsrv_53_nts_vc9.dll) into the PHP\ext folder and referenced them in the php.ini I restarted the server. But when I run phpinfo() I'm not seeing any reference to sqlsrv is that normal? or should there also be a section of phpinfo() dedicated to these sqlsrv extensions? Error logging is on but there are no errors coming up in the php-errors.log referring to sqlsrv. Both files php_pdo_sqlsrv_53_nts_vc9.dll and php_sqlsrv_53_nts_vc9.dll have been added (non thread safe version for IIS), php5.dll is present in the php install folder. Thanks for any pointers.

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