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• Layering Design Pattern in Java clean code style

  - by zeraDev

  As a Java developer, I am developing trying to use the clean code rules. But in my team we are facing a concrete problem: We have a business layer offering a service called "createObject", this service makes a lot of operation which can result to problem. E.g: parentObjectDontExist, objectAlreadyExist, dontHaveAuthorizationToCreate, operationFailed... and we want the UI using this service to display different information messages depending which error occurred. In old java dev, we should have create all signed exception type and throw it in createObject. As Clean code says, it is forbidden to use Exception for business logic AND signed exceptions are evil... Why not...But i don't know how to solved this problem and i don't want to use return code. How do you do? Thanks for youre experience return.

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• Using T[1] instead of T for functions overloaded for T(&)[N]

  - by Abyx

  The asio::buffer function has (void*, size_t) and (PodType(&)[N]) overloads. I didn't want to write ugly C-style (&x, sizeof(x)) code, so I wrote this: SomePacket packet[1]; // SomePacket is POD read(socket, asio::buffer(packet)); foo = packet->foo; But that packet-> looks kinda weird - the packet is an array after all. (And packet[0]. doesn't look better.) Now, I think if it was a good idea to write such code. Maybe I should stick to unsafe C-style code with void* and sizeof? Upd: here is another example, for writing a packet: SomePacket packet[1]; // SomePacket is POD packet->id = SomePacket::ID; packet->foo = foo; write(socket, asio::buffer(packet));

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• Workflow of sharing code for small teams

  - by Mihalis Bagos

  Problem is, we have developed a small CMS, that is different per implementation (currently). Of course development of this is never complete. Sometimes, we are working on more than one project that implements it (by copying-pasting the code files of the CMS to each project), and we add a new feature that we want to share on other projects as well (these can be small ones too, ie a custom ajax JSON controller - we use MVC) What we want to do is quickly and uniformly share the code with all other projects, via a version control system (or something similar), and generally organize the workflow as we know this isn't a very good workflow that we have. What would you suggest? Also, at the momment, the software we use is Visual Studio 2010, so we are strongly considering TFS, but even if we get it we still don't know the ideal workflow, or even if TFS supports what we want to do. Edit: Also note, we have specific implementations that have modifications over the CMS base that we want to KEEP only in the project area. (ie: a specific feature that we DONT want to share with the base CMS code)

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• Writing and Understanding code

  - by Kitex

  I can write code. I can read code but I can't implement good code. How to develop deep understanding of any framework or stuff that we are working on? Is it looking into documentation and working on it? I have seen in this form that people that have great understanding of things they are working on. How is this possible? How to not scrape on the surface only? How to manage time vs learning vs productivity?

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• Encouraging business and team members to write more code

  - by Aliixx

  I am really interested to hear any ideas or working practices that can be adopted to encourage our team of developers to write more code. A little background here is involves a team of varying disciplines, experience and qualities and the nature of the work has a large focus on bug fixes and business logic / data validation over writing lots of new greenfield code or even refactoring. We are attempting to move to a more Agile philosophy and really what would be great is to hear any ideas that can be sold to the team and / or the business with the aim of: Writing more new code to improve experience, abilities and increase exposure to newer and emerging patterns and practices. Energizing the effort of the team and inspire. Encouraging wider input of new ideas, patterns and practices from the team as a whole. I would be very interested (and grateful) to hear any ideas or examples of ideas that can help here. Thanks!

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• sum with matlab code

  - by user27089

  i need help it is only put sum in a code line if you can understand in below i have a code in this line below -> X(i,k+1) = X(i,k) + (( X(j,k)-X(i,k))); i want to change it as: X(i,k+1) = X(i,k) + sum(( X(j,k)-X(i,k))); briefly how can I put sum on the code line clear;rand('state', 1); global xLocation; N = 4; xLocation = rand(N,1); t=2;k=1;X=[N,t]; for i=1:N X(i,1)=xLocation(i); end while( k < t ) for i = 1 : N for j = 1 : N X(i,k+1) = X(i,k) + (( X(j,k)-X(i,k))); end end k = k + 1; end

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• Asterisk - Trying to use call files to create a conference call between two dynamic numbers

  - by Hank

  I'm trying to setup an Asterisk system that will allow me to create a conference call between two dynamic numbers. It seems I can use 'call files' to make Asterisk initiate the call without needing an incoming call - http://www.voip-info.org/tiki-index.php?page=Asterisk+auto-dial+out This example seems to be what I'd need: Channel: SIP/mytrunk/12345678 MaxRetries: 2 RetryTime: 60 WaitTime: 30 Context: callme Extension: 800 Priority: 2 I can generate this file with some scripting language and then place it into the Asterisk Call File folder. The problem I'm having is: How do I call out to two numbers and join them in a conference call? The MeetMe plugin/extension seems to be what I need in terms of conference calling, I'm just unsure as to how I'd use the two together and join them. Also, is it possible to have multiple 2-person conference calls at the same time? Is setting this up as simple as setting aside X amount of 'channels' in the meetme.conf?

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• Asterisk - Trying to use call files to create a conference call between two dynamic numbers

  - by Hank

  I'm trying to setup an Asterisk system that will allow me to create a conference call between two dynamic numbers. It seems I can use 'call files' to make Asterisk initiate the call without needing an incoming call - http://www.voip-info.org/tiki-index.php?page=Asterisk+auto-dial+out This example seems to be what I'd need: Channel: SIP/mytrunk/12345678 MaxRetries: 2 RetryTime: 60 WaitTime: 30 Context: callme Extension: 800 Priority: 2 I can generate this file with some scripting language and then place it into the Asterisk Call File folder. The problem I'm having is: How do I call out to two numbers and join them in a conference call? The MeetMe plugin/extension seems to be what I need in terms of conference calling, I'm just unsure as to how I'd use the two together and join them. Also, is it possible to have multiple 2-person conference calls at the same time? Is setting this up as simple as setting aside X amount of 'channels' in the meetme.conf?

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• two domains two servers one dynamic ip address

  - by giantman

  as i said i have 2 domain hi.org and bye.net and one dynamic ip address and two servers. i want to attach one domain bye.net to server1 and hi.org to server2. using apache wamp 2.0i. i hope someone will be able to answer. ` httpd.conf file additions ProxyRequests Off Order deny,allow Allow from all vhost file additions NameVirtualHost *:80 default DocumentRoot "c:/wamp/www/fallback" Server 1 DocumentRoot "c:/wamp/www" ServerName h**p://bye.net ServerAlias bye.net Server 2 ProxyPreserveHost On ProxyPass / h*p://192.168.1.119/ DocumentRoot "g:/wamp/www" ServerName h*p://hi.org ServerAlias hi.org ` after doing all this i fallback to server1 only i don't get the page hi.org i only get the page bye.net, i don't even get the default fallback page which gets executed when a person enters ip address but not the domain name. i use windows 7 (server2) and windows xp (server 1)

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• Automatic allocation(not Dynamic Allocation) on Windows DHCP server

  - by Kazoom

  DHCP supports three different mechanisms for IP address allocation: Manual allocation: the server's administrator creates a configuration for the server that includes the MAC address and IP address of each DHCP client that will be able to get an address: functionally equivalent to BOOTP though the protocol is incompatible. Automatic allocation: the server's administrator creates a configuration for the server that includes only IP addresses, which it gives out to clients. An IP address, once associated with a MAC address, is permanently associated with it until the server's administrator intervenes. Dynamic allocation: like automatic allocation except that the server will track leases and give IP addresses whose lease has expired to other DHCP clients How can i configure the automatic allocation on Windows 2000 or XP DHCP server? i can think of setting the lease to unlimited period, but i m not sure if the computer shutsdown gracefully it will make the ip address available to other machine.

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• Static IPv4 and dynamic IPv6 on same interface

  - by Zsub

  I am trying to set up a CentOS 5.4 box to use a static IPv4 address, while getting a dynamic IPv6 address at boot time. I have only one interface, apart from the loopback interface, eth0. It has a static v4 and internet connectivity (I can SSH in). However, it doesn't get an IPv6 by default. I have enabled IPv6 in /etc/sysconfig/network and I have added IPV6INIT=yes to the config in /etc/sysconfig/networking/devices/. If I use dhcp6c it does get a valid IPv6 address, but the main question is how do I configure it to get one at boot-time?

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• Formatted a Bootcamped drive as a dynamic disk, now can't boot to either Mac or Windows

  - by Steven H

  I was trying to create an extra partition to get a file from the Windows side of my Macbook Air to the Mac side, and I accidentally made the disk dynamic without realizing it. I am now unable to boot to the Mac side (holding Alt to go into the system manager at startup doesn't even list the Mac partition), and the Windows side blue screens during boot (goes so quickly that it doesn't even get to the error code before restarting). What can I do to fix the issue? I don't know how to make a bootable flash drive that a Mac will recognize, and Disk Utility (via Internet Recovery) couldn't do anything. (cross-posted from apple.stackexchange)

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• excel chart dynamic range based on values

  - by andrewk

  I'm trying to create a chart that auto updates itself from a data provided. The range of the chart is always fixed/locked. The issue I'm facing is that when a value for a certain month is 0, I want it to skip to the last non-zero month . Meaning the ranges selected forming the chart should exclude the month with the value zero. Which in most cases is the top month. The image below should clear it up. Is there a way to have the chart range be dynamic based on certain values?

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• PHP 5.2.11: Unable to load dynamic library complaints

  - by OldTroll

  I installed PHP 5.2.11 and upon enabling the php_mssql.dll module (and the obligatory restart of the services) started receiving warnings about not being able to load the dynamic library. The operating environment is IIS ISAPI under Windows 2003 R2. Here is the list of things that were checked File Exists in \PHP\ext directory and has the same timestamp as the other distribution delivered libraries. Permissions are correct to the file. Other extensions are enabled and functioning with identical permissions. ntwdblib.dll has been copied from a SQL Server 2005 installation (per php.net's requirements for the module) Other modules before and after the php_mssql entry are working. I've also stripped down and remove all non-essential references with detectable improvements. I turned up logging and enabled all the error logs in the php.ini, nothing is generated by the logs. Searching Google has turned up a slew of closed/unsolved bug reports on php.net and some miscellaneous near-matches, none of which have really addressed the problem or lead to any inspirations.

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• Dual boot - disk partition issues basic vs dynamic disk

  - by dboyd68

  I have a lenovo X1 that I am looking to dual boot windows and ubuntu on. I am having an issue. The disk came with 4 partitions SYSTEM_DRV, Windows C:, Lenovov Recovery, Hibernate Partition I have a SSD (250 gb) I have shrunk Windows C: so that I have 100gb of unallocated space. My plan was to install ubuntu on that. But when I try to create a new partition to install ubuntu on. Windows is saying I have to convert to a dynamic disk. I don't really understand the difference between Dyanimc and Basic disk but a quick search I am assuming I dont want to do this as I boot from this disk? Any suggestions on what I can do to dual boot? Thanks

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• How to copy a dynamic TrueCrypt volume quickly?

  - by Ivan

  I have created a dynamic TrueCrypt volume file, set it size to 40 GiB and put about 20 GiB of files on it. When I open the volume file properties it says "Size: 40.0 GB, Size on disk: 23.0 GB". When I try to move the volume file to another physical partition it takes a lot of time as it tries to copy all the 40 GB instead of just 20 GB that the volume file actually takes. Also, when it is less than 40 GB free on the target drive it says insufficient space even though it is more than enough space considering how much does the image file actually take. How do I overcome this? Creating a new volume file on the target drive works but needless to say I'd like a better solution.

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• Partition table correpted in windows 7 machine as simple dynamic partition

  - by raki

  I have Windows 7 installed in my system. When I originally partitioned it I made 3 partitions and 16 gb space as unallocated. Later I tried to create a partition using this free space using diskmanagement tool. It shows free space as unusabe space and the only one option available is to make it as a simple partition. Unfortunately I made it as simple partition and all my partitions converted to simple dynamic partition. Now after reboot the OS is not loading. I tried to reinstall the OS by formatting the C drive, but it doesn't work. Now I can't load the OS properly. How can I install Windows 7 on my system without losing my data on the other two drives?

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• Partition table correpted in windows 7 machine as simple dynamic partition

  - by raki

  I have Windows 7 installed in my system. When I originally partitioned it I made 3 partitions and 16 gb space as unallocated. Later I tried to create a partition using this free space using diskmanagement tool. It shows free space as unusabe space and the only one option available is to make it as a simple partition. Unfortunately I made it as simple partition and all my partitions converted to simple dynamic partition. Now after reboot the OS is not loading. I tried to reinstall the OS by formatting the C drive, but it doesn't work. Now I can't load the OS properly. How can I install Windows 7 on my system without losing my data on the other two drives?

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• Splitting a drive which has layout as mirrored and type as dynamic

  - by shiva

  I have a C drive/volume in my server with layout = mirror and type =dynamic and status as healthy(boot,pagefile,crashdump). I have some questions regarding this configuration: I think it is a raid configuration.Please correct me if I am wrong. I read that, mirroring is nothing but raid-1 configuration. All my software and OS is in this drive. I want my software to be in a separate drive, but I am not sure if I can create a separate drive from the above mentioned c drive. I want to know: a. If I can do it and how ?(using disk management) b. If this is a right approach ?

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• Adding a second IP address for IIS - static vs dynamic A records

  - by serialhobbyist

  I'm looking to add a second IP address to IIS so that I can run two sites with different SSL certificates. When I added one on my play box and ran ipconfig /registerdns both addresses were registered in DNS with the server's name. So, I deleted the A record for the new IP address and rebooted. That also registered both names. So, then I went into the network config for the adapter and, on the DNS tab, unchecked "Register this connection's addresses in DNS". I deleted the A record for the new IP address again and re-ran ipconfig /registerdns. This time, it deleted the A record for the old IP address and didn't created one for the new address. Neither of these is what I want: I want the main IP address to be registered and refreshed automatically as a dynamic DNS record and the second IP address to be registered and managed as a static address. Is there any way to achieve this?

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• Remote desktop to multiple windows machines on a LAN with dynamic IP

  - by kevyn

  Is it possible to use remote desktop to connect to multiple computers inside a network that has a dynamic IP address? I use a netgear WPN824 router which has dyndns onboard - but I currently use No-IP to control a single computer that I use most frequently. Every so often I need to get onto a couple of other computers in the network, but don't know how to go about this without logging onto one computer, and then starting another RDC session from that machine. What I would like to be able to do is connect to my router, and be able to see a list of connected devices, and then choose which to remote desktop onto. - I appreciate this probably is not be possible, but any other suggestions are welcome!

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• Own hosting, own domain on Virtualbox Ubuntu server - dynamic IP

  - by Pawel

  Hi, I have bought my TLD domain, say domain.com. What I'd like to do is to host the website available under this address on my own computer. I'm assigned a dynamic IP, and I'm also behind a router in my local network. I'd run sites on my ubuntu server on a virtualbox machine which is available in my local network. Preferably, I'd like to have my own domain on some server, with which I could experiment as much as I need (so it's only for educational purposes), but I can't afford to buy such a service. Is it feasible? Can you provide steps I'd need to take to configure it (could be just general explanation). I'd need some guidance, please.

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• Dynamic to static internal IP address (Snow Leopard server)

  - by bac

  I purchased a new Mac mini server, since my old iMac, which was a server pretty much died. My problem is this. How do I change my internal IP address for my mac mini server to a static address, like 192.168.0.2? Before you guys harp on me, my old server was running Ubuntu Hardy and I only had to map the IP address in the router, which would automatically assign the reserved address through DHCP. Now, I know things are different between the two, but my problem is that the mac is not accepting the assigned IP address or the router just is not assigning. However, every time I have manually changed it on the Mac to an address of my choice, it takes the computer off the Internet. My router is a NetGear WTG624 v2, I believe. I need this to work, so I can utilize Dynamic DNS.

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• Iptables remote port forwarding and dynamic remote ip

  - by lbwtz2

  Hello, I want to forward a port from my remote vps to my domestic server and I am quite a newbie with iptables. The problem is that I am using a dynamic dns service to reach my home server from the internet so I don't have a fixed ip and iptables doesn't like urls. The rules I am willing to use are these: -t nat -A PREROUTING -p tcp -i eth0 -d xxx.xxx.xxx.xxx --dport 8888 -j DNAT --to myhome.tld:80 -A FORWARD -p tcp -i eth0 -d myhome.tld --dport 80 -j ACCEPT Of course I recevie a Error BAD IP ADDRESS because of myhome.tld. What can I do?

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• How to combine with openvpn, dynamic-ip?

  - by asfasdv

  Dear everyone, I am currently using openvpn to surf online to bypass censorship. Let me show you the initial scenario: before openvpn is turned on: IP: 1.2.3.4 (hypothetical, checked by visiting whatismyip.com/) after openvpn is turned on IP: 10.2.3.4 (this is also checked with whatismyip.com/, I assume this is where the vpn's exit point's IP ) Situation: Once I enable openvpn, I can still ssh into this computer by sshing into 1.2.3.4, even though visiting whatismyip.com/ says it's 10.2.3.4. However, I am on dynamic IP, I run a website, and am using tools (inadyn in particular) which pings the freedns.afraid.org (my dns server) and updates my ip. The messed up part is when inadyn does so, my dns changes the ip to 10.2.3.4, which is presumably the exit point of my vpn. How do I get around this? (Note that sshing into 1.2.3.4 STILL works).

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