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  • Silverlight HVP Next Steps and Community Involvement

    The Silverlight HyperVideo project ran full steam from January through the day before Mix, and then went on hiatus while we all recovered, and while I pondered three critical questions: What features and changes are needed to bring the HVP up to the point that we can offer it for use by Silverlight.net and related sites [...]...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • fixing spelling mistake in method name

    - by One Two Three
    One of the methods that I commonly use in our codebase is misspelled (and it predated me). This really irritates me not simply because it is mispelled but more importantly it makes me ALWAYS get the method name wrong the first time I type it (and then I have to remember "Oh, right, it should be mispelled to this...") I'm making a few changes around the original method. Should I take the opportunity to just rename the freaking method?

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  • Fixing a spelling mistake in a method name

    - by One Two Three
    One of the methods that I commonly use in our codebase is misspelled (and it predated me). This really irritates me not simply because it is mispelled but more importantly it makes me ALWAYS get the method name wrong the first time I type it (and then I have to remember "Oh, right, it should be mispelled to this...") I'm making a few changes around the original method. Should I take the opportunity to just rename the freaking method?

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  • best way to import 500MB csv file into mysql database?

    - by mars
    I have a 500MB csv file that needs to be imported into my mysql database. I've made a php file where i can upload the csv file and it analyses the fields n stuff and does the actual importing. but it can only handle small fiels max 5mb. so that's a 100 files and actually pretty slow(uploading) is there another way? I have to repeat this process every month because the data in the file changes every month it's about 12 000 000 lines :D

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  • Sql Table Refactoring Challenge

    Ive been working a bit on cleaning up a large table to make it more efficient.  I pretty much know what I need to do at this point, but I figured Id offer up a challenge for my readers, to see if they can catch everything I have as well as to see if Ive missed anything.  So to that end, I give you my table: CREATE TABLE [dbo].[lq_ActivityLog]( [ID] [bigint] IDENTITY(1,1) NOT NULL, [PlacementID] [int] NOT NULL, [CreativeID] [int] NOT NULL, [PublisherID] [int] NOT NULL, [CountryCode] [nvarchar](10) NOT NULL, [RequestedZoneID] [int] NOT NULL, [AboveFold] [int] NOT NULL, [Period] [datetime] NOT NULL, [Clicks] [int] NOT NULL, [Impressions] [int] NOT NULL, CONSTRAINT [PK_lq_ActivityLog2] PRIMARY KEY CLUSTERED ( [Period] ASC, [PlacementID] ASC, [CreativeID] ASC, [PublisherID] ASC, [RequestedZoneID] ASC, [AboveFold] ASC, [CountryCode] ASC)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]) ON [PRIMARY] And now some assumptions and additional information: The table has 200,000,000 rows currently PlacementID ranges from 1 to 5000 and should support at least 50,000 CreativeID ranges from 1 to 5000 and should support at least 50,000 PublisherID ranges from 1 to 500 and should support at least 50,000 CountryCode is a 2-character ISO standard (e.g. US) and there is a country table with an integer ID already.  There are < 300 rows. RequestedZoneID ranges from 1 to 100 and should support at least 50,000 AboveFold has values of 1, 0, or 1 only. Period is a date (no time). Clicks range from 0 to 5000. Impressions range from 0 to 5000000. The table is currently write-mostly.  Its primary purpose is to log advertising activity as quickly as possible.  Nothing in the rest of the system reads from it except for batch jobs that pull the data into summary tables. Heres the current information on the database tables size: Design Goals This table has been in use for about 5 years and has performed very well during that time.  The only complaints we have are that it is quite large and also there are occasionally timeouts for queries that reference it, particularly when batch jobs are pulling data from it.  Any changes should be made with an eye toward keeping write performance optimal  while trying to reduce space and improve read performance / eliminate timeouts during read operations. Refactor There are, I suggest to you, some glaringly obvious optimizations that can be made to this table.  And Im sure there are some ninja tweaks known to SQL gurus that would be a big help as well.  Ill post my own suggested changes in a follow-up post for now feel free to comment with your suggestions. Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • Achieve Your Internet Marketing Goals With SEO

    Web promoting SEO has often established itself to be the key that changes little sites into profit belching creatures, and that's the truth. I have watched it occur with my very own eyes. I accept that net marketing SEO isn't precisely straightforward however its not that difficult of a task for somebody who is aware of and comprehends how search engines and their ranking principles work.

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  • O'Reilly deal of the day 25/June/2012 - The Art of SEO, 2nd Edition

    - by TATWORTH
    Today's deal of the day from O'Reilly at http://shop.oreilly.com/product/0636920019091.do?code=DEAL is The Art of SEO, 2nd Edition"Four acknowledged experts in search engine optimization share guidelines and innovative techniques that will help you plan and execute a comprehensive SEO strategy. This second edition brings you up to date on recent changes in search engine behavior—such as new ranking methods involving user engagement and social media—with an array of effective tactics, from basic to advanced." You should note that this is the second edition published March 2012

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  • What is occurring in the world of server-side technologies in regards to the mobile app boom?

    - by Akromyk
    With mobile technologies becoming increasingly popular what is happening on the server-side with most of these apps when they need to communicate with a back end? I'm used to the world of technology from 10 years ago when most resources were accessed by requesting a dynamic web page that behind the seen used a server-side language to get the information it needed from a relational database. Is this still the case, and if not, what are the big changes?

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  • Stairway to T-SQL DML Level 9: Adding Records to a table using INSERT Statement

    Not all applications are limited to only retrieving data from a database. Your application might need to insert, update or delete data as well. In this article, I will be discussing various ways to insert data into a table using an INSERT statement. Need to share database changes?Keep database dev teams in sync using your version control system and the SSMS plug-in SQL Source Control. Learn more.

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  • How would I detect if two 2D arrays of any shape collided?

    - by user2104648
    Say there's two or more moveable objects of any shape in 2D plane, each object has its own 2D boolean array to act as a bounds box which can range from 10 to 100 pixels, the program then reads each pixel from a image that represents it, and appropriatly changes the array to true(pixel has a alpha more then 1) or false(pixel has a alpha less than one). Each time one of these objects moves, what would be the best accurate way to test if they hit another object in Java using as few APIs/libraries as possible?

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  • How to stop Office 2010 changing " and ' to smart quotes

    - by fatherjack
    I have recently upgraded to Office 2010 at work and there are a few things that are a real problem for me. As a T-SQL developer and SQL Server DBA I copy and paste code to and from various applications and if Word gets involved it can has disastrous consequences. There is an option that appears to be defaulted to "on" that changes a straight quote to what Word describes as a smart quote - see the image below. Note - the single quote suffers from the same effect. Now, getting to the point that...(read more)

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  • A quick look at: sys.dm_os_buffer_descriptors

    - by fatherjack
    SQL Server places data into cache as it reads it from disk so as to speed up future queries. This dmv lets you see how much data is cached at any given time and knowing how this changes over time can help you ensure your servers run smoothly and are adequately resourced to run your systems. This dmv gives the number of cached pages in the buffer pool along with the database id that they relate to: USE [tempdb] GO SELECT COUNT(*) AS cached_pages_count , CASE database_id ...(read more)

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  • "Collection Wrapper" pattern - is this common?

    - by Prog
    A different question of mine had to do with encapsulating member data structures inside classes. In order to understand this question better please read that question and look at the approach discussed. One of the guys who answered that question said that the approach is good, but if I understood him correctly - he said that there should be a class existing just for the purpose of wrapping the collection, instead of an ordinary class offering a number of public methods just to access the member collection. For example, instead of this: class SomeClass{ // downright exposing the concrete collection. Things[] someCollection; // other stuff omitted Thing[] getCollection(){return someCollection;} } Or this: class SomeClass{ // encapsulating the collection, but inflating the class' public interface. Thing[] someCollection; // class functionality omitted. public Thing getThing(int index){ return someCollection[index]; } public int getSize(){ return someCollection.length; } public void setThing(int index, Thing thing){ someCollection[index] = thing; } public void removeThing(int index){ someCollection[index] = null; } } We'll have this: // encapsulating the collection - in a different class, dedicated to this. class SomeClass{ CollectionWrapper someCollection; CollectionWrapper getCollection(){return someCollection;} } class CollectionWrapper{ Thing[] someCollection; public Thing getThing(int index){ return someCollection[index]; } public int getSize(){ return someCollection.length; } public void setThing(int index, Thing thing){ someCollection[index] = thing; } public void removeThing(int index){ someCollection[index] = null; } } This way, the inner data structure in SomeClass can change without affecting client code, and without forcing SomeClass to offer a lot of public methods just to access the inner collection. CollectionWrapper does this instead. E.g. if the collection changes from an array to a List, the internal implementation of CollectionWrapper changes, but client code stays the same. Also, the CollectionWrapper can hide certain things from the client code - from example, it can disallow mutation to the collection by not having the methods setThing and removeThing. This approach to decoupling client code from the concrete data structure seems IMHO pretty good. Is this approach common? What are it's downfalls? Is this used in practice?

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  • Single API Architecture

    - by user1901686
    When people refer to an architecture that involves a single service API that all clients talk to (a client can be an iPad app, etc), what is the "client" for the web app -- is it A) the web browser itself. Thus, the entire app is written in html/css/javascript and ajax calls to the service are made to fetch data and changes are made through javascript or B) you have an MVC-like stack on a server, only instead of the controllers calling to the model layer directly, they call to the service API which return models that are used to render the traditional views or C) something else?

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  • Build Your Personal Network

    - by AllenMWhite
    Recently a few people have approached me privately about their careers, and how they can make the changes to allow them to do the kind of work they'd like to do, be it consulting or in a full-time role. (In every case, I was flattered and surprised, as I never felt I had that much insight into career choices.) The most important thing, I told each of them, was to use the network of people you know. You will always be more successful finding opportunities through personal contacts than you will through...(read more)

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  • Using SQL Server Concatenation Efficiently

    This article shares some tips on using concatenation efficiently for application development, pointing out some things that we must consider and look at when concatenating values or fields in our queries or stored procedures. NEW! Never waste another weekend deployingDeploy SQL Server changes and ASP .NET applications fast, frequently, and without fuss, using Deployment Manager, the new tool from Red Gate. Try it now.

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  • CPU and Scheduler Performance Monitoring using SQL Server and Excel

    This article will demonstrate a method of creating an Excel-based CPU/scheduler performance dashboard for SQL Server 2005+. NEW! Deployment Manager Early Access ReleaseDeploy SQL Server changes and .NET applications fast, frequently, and without fuss, using Deployment Manager, the new tool from Red Gate. Try the Early Access Release to get a 20% discount on Version 1. Download the Early Access Release.

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  • SQL Azure - Creating backups and copies of your databases

    As a DBA you always followed a practice to back up your database (or take a snapshot of your database) before making any changes so that you can revert to your old database state if something goes wrong. Also to setup a development or test environment you use a backup of your database and restore it in the respective environment. If you are moving to SQL Azure, what would you do in these cases as backup / restore and database snapshots are not supported as of now?

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