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• Building a Redundant / Distributed Application

  - by MattW

  This is more of a "point me in the right direction" question. My team of three and I have built a hosted web app that queues and routes customer chat requests to available customer service agents (It does other things as well, but this is enough background to illustrate the issue). The basic dev architecture today is: a single page ajax web UI (ASP.NET MVC) with floating chat windows (think Gmail) a backend Windows service to queue and route the chat requests this service also logs the chats, calculates service levels, etc a Comet server product that routes data between the web frontend and the backend Windows service this also helps us detect which Agents are still connected (online) And our hardware architecture today is: 2 servers to host the web UI portion of the application a load balancer to route requests to the 2 different web app servers a third server to host the SQL Server DB and the backend Windows service responsible for queuing / delivering chats So as it stands today, one of the web app servers could go down and we would be ok. However, if something would happen to the SQL Server / Windows Service server we would be boned. My question - how can I make this backend Windows service logic be able to be spread across multiple machines (distributed)? The Windows service is written to accept requests from the Comet server, check for available Agents, and route the chat to those agents. How can I make this more distributed? How can I make it so that I can distribute the work of the backend Windows service can be spread across multiple machines for redundancy and uptime purposes? Will I need to re-write it with distributed computing in mind? I should also note that I am hosting all of this on Rackspace Cloud instances - so maybe it is something I should be less concerned about? Thanks in advance for any help!

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• Working with Reporting Services Filters – Part 2: The LIKE Operator

  - by smisner

  In the first post of this series, I introduced the use of filters within the report rather than in the query. I included a list of filter operators, and then focused on the use of the IN operator. As I mentioned in the previous post, the use of some of these operators is not obvious, so I'm going to spend some time explaining them as well as describing ways that you can use report filters in Reporting Services in this series of blog posts. Now let's look at the LIKE operator. If you write T-SQL queries, you've undoubtedly used the LIKE operator to produce a query using the % symbol as a wildcard for multiple characters like this: select * from DimProduct where EnglishProductName like '%Silver%' And you know that you can use the _ symbol as a wildcard for a single character like this: select * from DimProduct where EnglishProductName like '_L Mountain Frame - Black, 4_'   So when you encounter the LIKE operator in a Reporting Services filter, you probably expect it to work the same way. But it doesn't. You use the * symbol as a wildcard for multiple characters as shown here: Expression Data Type Operator Value [EnglishProductName] Text Like *Silver* Note that you don’t have to include quotes around the string that you use for comparison. Books Online has an example of using the % symbol as a wildcard for a single character, but I have not been able to successfully use this wildcard. If anyone has a working example, I’d love to see it!

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• Multi-Resolution Mobile Development

  - by user2186302

  I'm about to start development on my first game for mobile phone (I already have a flash prototype completed so it's jsut a matter of "porting" it to mobile and fixing up the code) and plan on hopefully being able to get the game working on iphones and most android devices. I am using Haxe along with OpenFL and HaxeFlixel for development. My question is: What resolution should I design the game in initially and/or what is the best way to develop a game for multiple resolutions. I have found multiple different methods, the best, in my opinion, being strategy 3 on this page: http://wiki.starling-framework.org/manual/multi-resolution_development. However I have some questions about this. First, what would the best base resolution to use be, the guide suggests 240*320 which seems alright to me, although if I chose to use pixel graphics as I most probably will given I'm using HaxeFlixel, I'm not sure if they'll look too blocky on larger screens which I'm not even sure is a problem as it might still look alright. (Honestly, not sure about that and if anyone has any examples of games that use this method and look nice). Finally, please feel free to share whatever methods you use and think is best. For example, HaxeFlixel has a scaling feature that scales the game to fit the exact screen size, but I'm afraid that would lead to blurry and improperly scaled graphics since it would scale by non-integers. But, I'm not sure how noticeable a problem that may or may not be. Although from experience I'm pretty sure it won't look nice and currently I do not think I'm going to go for this option. So, I would really appreciate any help on this subject. Thank you in advance.

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• Converting a bounded knapsack problem to 0/1 knapsack problem

  - by Ants

  I ran across a problem where goal was to use dynamic programming (instead of other approaches). There is a distance to be spanned, and a set of cables of different lengths. What is the minimum number of cables needed to span the distance exactly? To me this looked like a knapsack problem, but since there could be multiples of a particular length, it was a bounded knapsack problem, rather than a 0/1 knapsack problem. (Treat the value of each item to be its weight.) Taking the naive approach (and not caring about the expansion of the search space), the method I used to convert the bounded knapsack problem into a 0/1 knapsack problem, was simply break up the multiples into singles and apply the well-known dynamic programming algorithm. Unfortunately, this leads to sub-optimal results. For example, given cables: 1 x 10ft, 1 x 7ft, 1 x 6ft, 5 x 3ft, 6 x 2ft, 7 x 1ft If the target span is 13ft, the DP algorithm picks 7+6 to span the distance. A greedy algorithm would have picked 10+3, but it's a tie for minimum number of cables. The problem arises, when trying to span 15ft. The DP algorithm ended up picking 6+3+3+3 to get 4 cables, while the greedy algorithm correctly picks 10+3+2 for only 3 cables. Anyway, doing some light scanning of converting bounded to 0/1, it seems like the well-known approach to convert multiple items to { p, 2p, 4p ... }. My question is how does this conversion work if p+2p+4p does not add up to the number of multiple items. For example: I have 5 3ft cables. I can't very well add { 3, 2x3, 4x3 } because 3+2x3+4x3 5x3. Should I add { 3, 4x3 } instead? [I'm currently trying to grok the "Oregon Trail Knapsack Problem" paper, but it currently looks like the approach used there is not dynamic programming.]

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• How should I structure my database to gain maximum efficiently in this scenario?

  - by Bob Jansen

  I'm developing a PHP script that analyzes the web traffic of my clients websites. By placing a link to a javascript on the clients website (think of Google Analyses), my script harvests information like: the visitors IP address, reference link, current page link, user agent, etc. Now my clients can view these statistics via a control panel that I have build. These clients can also adjust profile settings, set firewall rules, create support tickets and pay invoices. Currently all the the traffic is stored in one table. You can imagine that this tabel would become very large as some my clients receive thousands of pageviews per day. Furthermore, all the traffic data of each client would be stored in the same table, creating a mess. This is the same for the firewall rules currently, and the invoice and support system. I'm looking for way to structure my database in a more organized way to hold large amounts of data of multiple users. This is the first project that I'm developing that deals with so much data, and would like to hear suggestions and tips. I was thinking of using multiple databases to structure the data. The main database will store users data (email,pass,id,etc) admin/website settings. Than each client will have an unique database labeled prefix_userid, which carry tables holding their traffic, invoice, and support ticket data. Would this be a solution, and would it slow down or speed up overall performances (that is spreading the data over muliple databases). I have a solid VPS, but would like to safe and be as effient as possible.

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• IE does not send NTLM domain

  - by Buddy Casino

  Hi! I have a problem with NTLM single-sign-on with IE8. We've got multiple domain controllers and users from multiple domains that we try to authenticate to a web application via NTLMv1 passthru. Somehow IE fails to send the user's domain in the NTLM Type 1 message. This has the effect that the webapp can not match users properly to their domain controllers, resulting in failed logon attempts, because a user from domain X tries to authenticate to domain controller Y. This problem does not occur with Firefox, as it always sends the correct domain header. So: how do I get IE to send the domain in the NTLM header? Grateful for any help, Michael

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• dual/multi-boot computers and software licensing

  - by Matt

  Suppose you have a computer with two or more operating systems, and a certain piece of software whose license terms allows it to be installed on one computer, and it does a daily check with a remote server to verify that your serial is only used on the original install computer. You install this software on each of your OSes, but since its a different OS the remote server would have to determine that it is not on the same computer, and so would disable your license. So my question, when a license refers to a single computer, does a situation like this usually count as a single computer, or do the multiple OSes sort of make it multiple computers? How do you think a software vendor (specifically thinking AV companies that do this sort of serial check) would handle this situation?

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• Limitations of the SharePoint join using CAML

  - by ybbest

  Limitation One In SharePoint 2010, you can join the primary list to a foreign list and include more than one field from the foreign list. However, the limitation is that the included fields from foreign list have to be the following type: Calculated (treated as plain text) ContentTypeId Counter Currency DateTime Guid Integer Note (one-line only) Number Text The above limitation also explains why you cannot include some types of the fields from the remote list when creating a lookup. Limitation Two When using CAML query to join SharePoint lists, there can be joins to multiple lists, multiple joins to the same list, and chains of joins. However, the limitations are only inner and left outer joins are permitted and the field in the primary list must be a Lookup type field that looks up to the field in the foreign list. Limitation Three The support for writing the JOIN query in CAML is very limited.I have to hand-code the CAML query to join the lists,not fun at all.Although some blogs post mentioned about using LINQ to SharePoint and get the CAML code from there , but I never get it to work.You can check this blog post  for this.Let me know if it works for you. References: http://msdn.microsoft.com/en-us/library/ee535502.aspx http://msdn.microsoft.com/en-us/library/microsoft.sharepoint.spquery.joins.aspx

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• self-signed certificate for iis 6.0

  - by denise

  how do i setup a self-signed certificate for multiple websites?

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• Generalist Languages: Dying or Alive and Well?

  - by dsimcha

  Around here, it seems like there's somewhat of a consensus that generalist programming languages (that try to be good at everything, support multiple paradigms, support both very high- and very low-level programming), etc. are a bad idea, and that it's better to pick the right tool for the job and use lots of different languages. I see three major areas where this is flawed: Interfacing multiple languages is always at least a source of friction and is sometimes practically impossible. How severe a problem this is depends on how fine-grained the interfacing is. Near the boundary between the two languages, though, you're basically limited to the intersection of their features, and you have to care about things like binary interfaces that you usually wouldn't. Passing complex data structures (i.e. not just primitives and arrays of primitives) between languages is almost always a hassle. Furthermore, shifting between different syntaxes, different conventions, etc. can be confusing and annoying, though this is a fairly minor complaint. Requirements are never set in stone. I hate picking a language thinking it's the right tool for the job, then realizing that, when some new requirement surfaces, it's actually a terrible choice for that requirement. This has happened to me several times before, usually when working with languages that are very slow, very domain specific and/or has very poor concurrency/parallelism support. When you program in a language for a while, you start to build up a personal toolbox of small utility functions/classes/programs. The value of these goes drastically down if you're forced to use a different language than the one you've accumulated all this code in. What am I missing here? Why shouldn't more focus be placed on generalist languages? Are generalist languages as a category dying or alive and well?

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• CPU?: Not responding

  - by James

  I'm attempting to build a system for co-location. I've been running into issues while trying to install CentOS 6.3 System Specs: Motherboard: ASUS m5a99x Process: AMD FX-8120 (8-core Bulldozer) Memory: 2x 4gb G-Skill 2133 running at 1600 I keeps giving me an error message: CPU1: Not Responding. CPU2: Not Responding. CPU3: Not Responding. CPU4: Not Responding. CPU5: Not Responding. CPU6: Not Responding. Then it instantly restarts. I have tried installing it from USB, Multiple DVDs, Multiple Distros. I have also in the bios attempted to disable cores. I was able to disable 2/3 4/5 6/7. I have also ensured that there is zero overclocking. The system works fine in a windows environment. I'm out of ideas.

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• RDS Replication across regions

  - by Bryan Migliorisi

  We are using Amazon AWS for our web services but given the recent instabilities in their infrastructure, we are trying to figure out how to run our application across multiple regions for additional redundancy. Ideally, we would run our entire app in a active-active configuration in multiple regions but our main concern is that we are using RDS, which I understand cannot replicate across regions. One possible solution (though we have not tried or proven it would work) would be to do mysqldump or EBS snapshots every hour or so but this would mean that we would be forced to run in an active-passive configuration. Our data would be at most an hour behind. This carries its own issues around data synchronization when we failover and the master comes back up, so its not the best solution. Are there any proven solutions for replicating RDS across regions?

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• Prefer class members or passing arguments between internal methods?

  - by geoffjentry

  Suppose within the private portion of a class there is a value which is utilized by multiple private methods. Do people prefer having this defined as a member variable for the class or passing it as an argument to each of the methods - and why? On one hand I could see an argument to be made that reducing state (ie member variables) in a class is generally a good thing, although if the same value is being repeatedly used throughout a class' methods it seems like that would be an ideal candidate for representation as state for the class to make the code visibly cleaner if nothing else. Edit: To clarify some of the comments/questions that were raised, I'm not talking about constants and this isn't relating to any particular case rather just a hypothetical that I was talking to some other people about. Ignoring the OOP angle for a moment, the particular use case that I had in mind was the following (assume pass by reference just to make the pseudocode cleaner) int x doSomething(x) doAnotherThing(x) doYetAnotherThing(x) doSomethingElse(x) So what I mean is that there's some variable that is common between multiple functions - in the case I had in mind it was due to chaining of smaller functions. In an OOP system, if these were all methods of a class (say due to refactoring via extracting methods from a large method), that variable could be passed around them all or it could be a class member.

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• Kill xserver from command line (init 3/5 does not work)

  - by John Smith

  Hi, I'm running Linux Mint 10, although I've had this same issue with other variants of Linux. I've been told/found while researching that if the X server hangs or otherwise errors, one can drop to a root prompt, usually at another tty, and execute init 3 (to drop to single user mode) and then init 5 to return to the default, graphical session. Needless to say, I've tried this before in multiple configurations on multiple machines to no avail. The only feedback I receive form executing those two commands is a listing of VMWare services (from a kernel module) that are stopped and then restarted. Note: If I run startx (either before or after init 3), then I am told that the xserver is still running and that I should remove /tmp/.X0-lock. Having tried that, it removes that error message, but claims that the xserver cannot be attached as another instance is running. How do I kill the xserver completely? Can I killall some process name?

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• Port numbers in Visual Studio projects and IIS

  - by aspdotnetuser

  I have a few questions about localhost and port numbers as this is an area where I do not have a lot of knowledge, and because I recently had to work with setting up Visual Studio projects and IIS and there are things I'm not clear on. I have the following questions on the things I find confusing. I thought it made more sense to include them all in one question instead of making separate questions. I have noticed a random port number is generated with projects I have worked on in the past, but I recently saw a project where the port number was fixed. What is the purpose of having a fixed/default localhost port number? i.e is it particularly useful on projects that have many programmers working on the project? If a solution contains multiple projects (for example, WCF services, Domain, MVC/Web pages), is it possible to setup a different localhost port for each of them? If so, what is the benefit of this? If a solution contains multiple projects and has different localhost urls/port numbers, must there be a corresponding website (and application pool) for each project in IIS? Or just for the project that contains the actual web pages?

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• DataContractSerializer truncated string when used with MemoryStream,but works with StringWriter

  - by Michael Freidgeim

  We've used the following DataContractSerializeToXml method for a long time, but recently noticed, that it doesn't return full XML for a long object, but  truncated it and returns XML string with the length of  multiple-of-1024 , but the reminder is not included. internal static string DataContractSerializeToXml<T>(T obj) { string strXml = ""; Type type= obj.GetType();//typeof(T) DataContractSerializer serializer = new DataContractSerializer(type); System.IO.MemoryStream aMemStr = new System.IO.MemoryStream(); System.Xml.XmlTextWriter writer = new System.Xml.XmlTextWriter(aMemStr, null); serializer.WriteObject(writer, obj); strXml = System.Text.Encoding.UTF8.GetString(aMemStr.ToArray()); return strXml; }   I tried to debug and searched Google for similar problems, but didn't find explanation of the error. The most closed http://forums.codeguru.com/showthread.php?309479-MemoryStream-allocates-size-multiple-of-1024-( talking about incorrect length, but not about truncated string.fortunately replacing MemoryStream to StringWriter according to http://billrob.com/archive/2010/02/09/datacontractserializer-converting-objects-to-xml-string.aspxfixed the issue.   1: var serializer = new DataContractSerializer(tempData.GetType());   2: using (var backing = new System.IO.StringWriter())   3: using (var writer = new System.Xml.XmlTextWriter(backing))   4: {   5:     serializer.WriteObject(writer, tempData);   6:     data.XmlData = backing.ToString();   7: }v

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• Best PerfCounters for monitoring system health of IIS, WCF, WWF and .Net for a Workflow based soluti

  - by Gineer

  We have a solution built in .Net that will be installed into a client environment. The solution will span multiple servers and be running on multiple tiers. The client makes us of MOM (Microsoft operations Manager) to monitor the system. What are the best counters to use for monitoring the overall health of the system? Are there any built in counters that we could add into a MOM Pack (as an Alert) to test a given scenario? Any thoughts suggestions would be much apreciated. Thanks

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• Windows 7 tips and tricks

  - by Pyrolistical

  Related Question: Which windows tweaks do you use and they actually work? Tell us your favorite Windows 7 tips and tricks. Here's some I bet you never have heard of: Win + Arrow and Win + Shift + Arrow controls window location and even moves window to next monitor if you have multiple ones Win + P controls project/multiple monitors The pinned icons on the new taskbar can be launched by Win + 1, Win + 2, etc Launch a pinned icon again by using mouse 3, meaning you can open another Firefox window by just wheel clicking the icon! From The Bumper List of Windows 7 Secrets And a few more off the top of my head: Use the favorites at the top left in Windows Explorer. Drag commonly used folders to it, its super handy You can drag the task icons in and out of hidden icons The show desktop button is now that rectangle next to the clock on the task bar What tips and tricks do you have?

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• ORAchk version 2.2.5 is now available for download

  - by Gerry Haskins

  Those awfully nice ORAchk folks have asked me to let you know about their latest release... ORAchk version 2.2.5 is now available for download, new features in 2.2.5: Running checks for multiple databases in parallel Ability to schedule multiple automated runs via ORAchk daemon New "scratch area" for ORAchk temporary files moved from /tmp to a configurable $HOME directory location System health score calculation now ignores skipped checks Checks the health of pluggable databases using OS authentication New report section to report top 10 time consuming checks to be used for optimizing runtime in the future More readable report output for clusterwide checks Includes over 50 new Health Checks for the Oracle Stack Provides a single dashboard to view collections across your entire enterprise using the Collection Manager, now pre-bundled Expands coverage of pre and post upgrade checks to include standalone databases, with new profile options to run only these checks Expands to additional product areas in E-Business Suite of Workflow & Oracle Purchasing and in Enterprise Manager Cloud Control ORAchk has replaced the popular RACcheck tool, extending the coverage based on prioritization of top issues reported by users, to proactively scan for known problems within the area of: Oracle Database Standalone Database Grid Infrastructure & RAC Maximum Availability Architecture (MAA) Validation Upgrade Readiness Validation Golden Gate Enterprise Manager Cloud Control Repository E-Business Suite Oracle Payables (R12 only) Oracle Workflow Oracle Purchasing (R12 only) Oracle Sun Systems Oracle Solaris ORAchk features: Proactively scans for the most impactful problems across the various layers of your stack Streamlines how to investigate and analyze which known issues present a risk to you Executes lightweight checks in your environment, providing immediate results with no configuration data sent to Oracle Local reporting capability showing specific problems and their resolutions Ability to configure email notifications when problems are detected Provides a single dashboard to view collections across your entire enterprise using the Collection Manager ORAchk will expand in the future with high impact checks in existing and additional product areas. If you have particular checks or product areas you would like to see covered, please post suggestions in the ORAchk subspace in My Oracle Support Community. For more details about ORAchk see Document 1268927.2

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• Purpose oriented user accounts on a single desktop?

  - by dd_dent

  Starting point: I currently do development for Dynamics Ax, Android and an occasional dabble with Wordpress and Python. Soon, I'll start a project involving setting up WP on Google Apps Engine. Everything is, and should continue to, run from the same PC (running Linux Mint). Issue: I'm afraid of botching/bogging down my setup due to tinkering/installing multiple runtimes/IDE's/SDK's/Services, so I was thinking of using multiple users, each purposed to handle the task at hand (web, Android etc) and making each user as inert as possible to one another. What I need to know is the following: Is this a good/feasible practice? The second closest thing to this using remote desktops connections, either to computers or to VM's, which I'd rather avoid. What about switching users? Can it be made seamless? Anything else I should know? Update and clarification regarding VM's and whatnot: The reason I wish to avoid resorting to VM's is that I dislike the performance impact and sluggishness associated with it. I also suspect it might add a layer of complexity I wish to avoid. This answer by Wyatt is interesting but I think it's only partly suited for requirements (web development for example). Also, in reference to the point made about system wide installs, there is a level compromise I should accept as experessed by this for example. This option suggested by 9000 is also enticing (more than VM's actually) and by no means do I intend to "Juggle" JVMs and whatnot, partly due to the reason mentioned before. Regarding complexity, I agree and would consider what was said, only from my experience I tend to pollute my work environment with SDKs and runtimes I tried and discarded, which would occasionally leave leftovers which cause issues throught the session. What I really want is a set of well defined, non virtualized sessions from which I can choose at my leisure and be mostly (to a reasonable extent) safe from affecting each session from the other. And what I'm really asking is if and how can this be done using user accounts.

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• With Choice Comes Complexity

  - by BuckWoody

  "Complex" may be defined as "Having many steps, details or parts." Many of Microsoft's products, including SQL Server, can be complex. I'm stating what most data professionals already know - there's usually multiple ways to do things in SQL Server. For instance, to import some data into a table you can use graphical tools, SQLCMD, bcp, SQL Server Integration Services, BULK INSERT, even PowerShell, just to name a few tools at your disposal. That's really not the issue, though. The bigger issue is that there are normally multiple thought-processes, or methods, that you have available for a task. That's both a strength and a weakness. If things were more simple, you would have fewer choices. Sometimes that's a good thing. Just tell me what I need to do and I'll do it. However, your particular situation may not fit that tool or process, so having more options increases your ability to get your job done the way you need to do it. On the other hand, that's more for you to learn, which is harder. There's another side of this benefit/difficulty that you need to be aware of. Even if you're quite good at what you do, keep in mind that the way you know how to do something may not be the only way to do it. Keep your mind open to new possibilities, and most importantly - to new knowledge. SQL Server professionals teach me something new every day. So embrace the complexity - on balance, it's a good thing! Share this post: email it! | bookmark it! | digg it! | reddit! | kick it! | live it!

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• logitech unifying receiver

  - by Plastkort

  hi! I am having multiple logitech devices, and each and one of them seem to have theire own receiver, occupying USB ports.. I read upon Logitech unifying receiver, and it seem to connect multiple wireless devices from logitech, however I wonder if I just buy this one receiver, will I be able to connect my existing wireless devices, or will I be forced to buy new keyboard and mouse in order to use the unifying receiver? hope anyone here have the answer so I dont need to spend money on something I cannot use.. :) I got PC 1 Logitech Dinovo Edge keyboard Logitech MX Air mouse PC 2 Logitech Dinovo Keyboard Logitech VX mouse

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• How to delete just one LINE of text (NOT a table-row!) with a single KEYBOARD shortcut in Microsoft Office Word 2010?

  - by Sk8erPeter

  Are there any shortcuts to delete just one row (which is NOT a table row, just a single row in a text) in Microsoft Office Word 2010? If not, how can I assign one to do it? In worst case, can I make a macro (in VB) which could do the same with a custom shortcut? To clarify my problem: I would like to avoid multiple clicks and/or pushing multiple buttons, even if I click in the middle of the line of text. :) For example, in Notepad++ I can delete the entire current line with Ctrl+L, in NetBeans, I can delete an entire line with Ctrl+E, in Eclipse, I can delete current line with Ctrl+D, etc., where it doesn't really matter where my mouse cursor is actually... so there are these simple solutions, which I look for in Word too. It really would simplify my work in huge documents.

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• How should I architect a personal schedule manager that runs 24/7?

  - by Crawford Comeaux

  I've developed an ADHD management system for myself that's attempting to change multiple habits at once. I know this is counter to conventional wisdom, but I've tried the conventional for years & am now trying it my way. (just wanted to say that to try and prevent it from distracting people from the actual question) Anyway, I'd like to write something to run on a remote server that monitors me, helps me build/avoid certain habits, etc. What this amounts to is a system that: runs 24/7 may have multiple independent tasks to run at once may have tasks that require other tasks to run first lets tasks be scheduled by specific time, recurrence (ie. "run every 5 mins"), or interval (ie. "run from 2pm to 3pm") My first naive attempt at this was just a single PHP script scheduled to run every minute by cron (language was chosen in order to use a certain library, but no longer necessary). The logic behind when to run this or that portion of code got hairy pretty quick. So my question is how should I approach this from here? I'm not tied to any one language, though I'm partial to python/javascript. Thoughts: Could be done as a set of scripts that include a scheduling mechanism with one script per bit of logic...but the idea just feels wrong to me. Building it as a daemon could be helpful, but still unsure what to do about dozens of if-else statements for detecting the current time

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• New Dell Vostro 3550 will not boot into Live CD

  - by rich97

  I've been trying to install Ubuntu and/or it's derivatives on my new Dell Vostro 3550 but I'm finding it impossible to boot into the live CD environment. Here are the things I've already tried: Booting from multiple versions of multiple distributions (Ubuntu 10.10, Ubuntu 11.04, Mint 11, Mint 10) Booting from a Live USB created with unetbootin, the Linux Mint startup disk creator, the universal USB creator and dd of=linuxmint.***.iso if if=/dev/sdx. Burning a CD and booting from the internal CD drive. In the case of the USB keys with the latest versions of Ubuntu it gets to the page where I can select a boot option, but after selecting an option the screen goes black, even the back light turns off. With the older distributions the screen stays on but it starts loading and then just hangs. The CDs don't even try to boot. It starts spinning but then falls back to the default Windows install. The only way I've got it to work so far is with Wubi, but that's hardly ideal. I'd like to have two separate physical partitions with a /home and /. Any help is appreciated. Thank you.

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