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  • Books are Dead! Long Live the Books!

    - by smisner
    We live in interesting times with regard to the availability of technical material. We have lots of free written material online in the form of vendor documentation online, forums, blogs, and Twitter. And we have written material that we can buy in the form of books, magazines, and training materials. Online videos and training – some free and some not free – are also an option. All of these formats are useful for one need or another. As an author, I pay particular attention to the demand for books, and for now I see no reason to stop authoring books. I assure you that I don’t get rich from the effort, and fortunately that is not my motivation. As someone who likes to refer to books frequently, I am still a big believer in books and have evidence from book sales that there are others like me. If I can do my part to help others learn about the technologies I work with, I will continue to produce content in a variety of formats, including books. (You can view a list of all of my books on the Publications page of my site and my online training videos at Pluralsight.) As a consumer of technical information, I prefer books because a book typically can get into a topic much more deeply than a blog post, and can provide more context than vendor documentation. It comes with a table of contents and a (hopefully accurate) index that helps me zero in on a topic of interest, and of course I can use the Search feature in digital form. Some people suggest that technology books are outdated as soon as they get published. I guess it depends on where you are with technology. Not everyone is able to upgrade to the latest and greatest version at release. I do assume, however, that the SQL Server 7.0 titles in my library have little value for me now, but I’m certain that the minute I discard the book, I’m going to want it for some reason! Meanwhile, as electronic books overtake physical books in sales, my husband is grateful that I can continue to build my collection digitally rather than physically as the books have a way of taking over significant square footage in our house! Blog posts, on the other hand, are useful for describing the scenarios that come up in real-life implementations that wouldn’t fit neatly into a book. As many years that I have working with the Microsoft BI stack, I still run into new problems that require creative thinking. Likewise, people who work with BI and other technologies that I use share what they learn through their blogs. Internet search engines help us find information in blogs that simply isn’t available anywhere else. Another great thing about blogs, also, is the connection to community and the dialog that can ensue between people with common interests. With the trend towards electronic formats for books, I imagine that we’ll see books continue to adapt to incorporate different forms of media and better ways to keep the information current. At the moment, I wish I had a better way to help readers with my last two Reporting Services books. In the case of the Microsoft® SQL Server™ 2005 Reporting Services Step by Step book, I have heard many cases of readers having problems with the sample database that shipped on CD – either the database was missing or it was corrupt. So I’ve provided a copy of the database on my site for download from http://datainspirations.com/uploads/rs2005sbsDW.zip. Then for the Microsoft® SQL Server™ 2008 Reporting Services Step by Step book, we decided to avoid the database problem by using the AdventureWorks2008 samples that Microsoft published on Codeplex (although code samples are still available on CD). We had this silly idea that the URL for the download would remain constant, but it seems that expectation was ill-founded. Currently, the sample database is found at http://msftdbprodsamples.codeplex.com/releases/view/37109 but I have no idea how long that will remain valid. My latest books (#9 and #10 which are milestones I never anticipated), Building Integrated Business Intelligence Solutions with SQL Server 2008 R2 and Office 2010 (McGraw Hill, 2011) and Business Intelligence in Microsoft SharePoint 2010 (Microsoft Press, 2011), will not ship with a CD, but will provide all code samples for download at a site maintained by the respective publishers. I expect that the URLs for the downloads for the book will remain valid, but there are lots of references to other sites that can change or disappear over time. Does that mean authors shouldn’t make reference to such sites? Personally, I think the benefits to be gained from including links are greater than the risks of the links becoming invalid at some point. Do you think the time for technology books has come to an end? Is the delivery of books in electronic format enough to keep them alive? If technological barriers were no object, what would make a book more valuable to you than other formats through which you can obtain information?

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  • How does one pluralize <see cref="Notation">'s?

    - by Jordan
    What is the most appropriate way of writing this comment: /// <summary> /// Order - Identifies the ordinal location of this category /// relative to other listed categories. /// </summary> if I'm wanting to wrap "category" in <see> tags? I've considered: /// <summary> /// Order - Identifies the ordinal location of this <see cref="Category"/> /// relative to other listed <see cref="Category"/>'s. /// </summary> Do you see my dilemma? Edit: I should add that I am using Visual Studio's XML Comments. So I am somewhat restricted as to the schema. I believe cref has to point to a valid type reference.

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  • Thread problem updating Windows Forms control in XNA C#

    - by Luis
    I'm development a network card game, and for now i've two players connected but there is a problem with one of them, this one can't do anything on the game. Looks that screen was blocked. I'm think that is because a code i used before. That code is: if (InvokeRequired) { this.Invoke(new MethodInvoker(delegate { ... })); return; } The code above is surrounding code to changing Button values, make connection with server and create game window. Without this code a warning is shown. InvalidOperationException was unhandled Cross-thread operation not valid: Control 'startGameButton' accessed from a thread other than the thread it was created on.

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  • In a SSL web application, what would be the vulnerabilities of using session based authentication?

    - by Thomas C. G. de Vilhena
    I'm not sure the term even exists, so let me explain what I mean by "session based authentication" through some pseudo-code: void PerformLogin(string userName, string password) { if(AreValidCredentials(userName, password)) { Session.Set("IsAuthenticated", true); } else { Message.Show("Invalid credentials!"); } } So the above method simply verifies the provided credentials are valid and then sets a session flag to indicate that the session user is authenticated. Under plain HTTP that is obviously unsafe, because anyone could hijack the session cookie/querystring and breach security. However, under HTTPS the session cookie/querystring is protected because client-server communication is encrypted, so I believe this authentication approach would be safe, wouldn't it? I'm asking this because I want to know how authentication tickets can improve web applications security. Thanks in advance!

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  • Preventing Users From Copying Text From and Pasting It Into TextBoxes

    Many websites that support user accounts require users to enter an email address as part of the registration process. This email address is then used as the primary communication channel with the user. For instance, if the user forgets her password a new one can be generated and emailed to the address on file. But what if, when registering, a user enters an incorrect email address? Perhaps the user meant to enter <code>[email protected]</code>, but accidentally transposed the first two letters, entering <code>[email protected]</code>. How can such typos be prevented?The only foolproof way to ensure that the user's entered email address is valid is to send them a validation email upon registering that includes a link that, when visited, activates their account. (This

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  • Updating Pages after migration of website

    - by DLackey
    My web site was coded in Coldfusion and over the years has obtained a good ranking. I recently migrated the front-end to a Wordpress site and wanted to know what is ideal way of updating Google and the various search engines of of the updates. For example, the home page of index.cfm is no longer valid since it's index.php. I've submitted an updated sitemap.xml file to Google. I'm sure my site will slip some while the search engines re-index my site but I'd like to try and minimize this as much as possible with the holidays coming up (my site is a service oriented site that caters to people who travel during the holidays). Right now, the old .cfm pages are still online but are re-routed to the appropriate Wordpress page (for example, about.cfm is now routed to /about/ using a cflocation tag.). Not sure if I should pull down the .cfm pages all together or leave them in place until the new pages are picked up by the search engines. Any advice would be helpful.

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  • Bad Bot blocking Revisited

    - by Tom
    I've read a lot about bad bot blocking, php scripts, .htaccess techniques, etc... Is this a valid method? Since .htacces can rewrite and send a bad bot a 403 deny or forward to something like spam poison, is it possible to Disallow a folder, then through .htaccess in that specific folder redirect to spampoison? Since Apache reads each .htaccess independently and follows specific instructions, then a bad bot not following robots.txt would just be redirected. Or anyone trying to access, /badbot/ or whatever I choose to call my trap folder. Thanks Tom

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  • Recommended certification to join in a game development internship [on hold]

    - by Conrado Costa
    I'm Brazilian and I'll go to California in July 2014 to study for 1 year and I'm intending to get a winter internship in the game development industry. I'm a programmer since 2008 and I know C#, PHP, Java, Python and a bit of Perl. My question is: do you know any certified required (or helpful) to get a winter job as a game developer? I have no problem to learn new languages, I'm thinking to get a C or C++ certified because I'm not sure about which is the most used language, but before to start a study marathon to take a certification, I have to choose the language and the certification itself. Can you help me, and is that a valid question?

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  • HTG Explains: Photography with Film-Based Cameras

    - by Eric Z Goodnight
    We’ve become reliant on digital cameras since they are so easy to use. But have you ever wondered how film-based photography works? Read on to increase your photographic knowledge—or to develop an new appreciation for your point and click camera. Film-based cameras, to some, are a relic of the past. Simply an old technology made obsolete by the new and improved. But to many, film is an artisan’s material, and a photographic experience no digital system could hope to ever recreate. While many photographers, professional and amateur will swear by the quality of both film-based or digital cameras—the fact remains that film is still a valid way to take great photographs, and a fascinating way to learn more about how photography works.  HTG Explains: Photography with Film-Based CamerasHow to Clean Your Dirty Smartphone (Without Breaking Something)What is a Histogram, and How Can I Use it to Improve My Photos?

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  • Oracle12c ist da: Neue Features für Entwicker

    - by Carsten Czarski
    Das Warten hat ein Ende. Oracle12c Release 1 steht zum Download bereit. Oracle12c bringt eine Reihe neuer Funktionen für SQL, PL/SQL und APEX Entwickler mit. Mit SQL Pattern Matching, Identify Columns, Code Based Security seien nur drei Beispiele genannt. In unserem aktuellen Community Tipp stellen wir 12 neue Features für Entwickler vor - erfahren Sie, wie Sie mit Oracle12c noch schneller und effizienter entwickeln können. Automatische Sequences und Identity Columns SQL und PL/SQL: Erweiterungen und Verbesserungen PL/SQL: Rechte, Rollen und mehr Oracle Multitenant und APEX SQL Pattern Matching Wann ist die Zeile gültig: Valid Time Temporal : Bei den Kollegen der DBA Community finden Sie entsprechend eine Übersicht mit den für Administratoren und den Datenbankbetrieb interessanten Neuerungen.

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  • SEO URL structure for tag search on site

    - by Theo G
    I am looking to add tags to each product on my site e.g. brown, x products under £x, second hand x, refurbished x etc. Once you click these tags it will then search for other tags that are similar. I was thinking of using a url structure of www.site.com/tags/this%is%the%tag%name and then simply have a page that shows the results of all the products with that tag. I heard a while back that google generally ignores or downgrades anything with ‘search’ in the url and was wondering if anyone had any experience with this? Also, would you say /tags/ is a pretty valid destination or is it best to break it down and add more levels e.g. /product-type/product%variation Thanks in advance!

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  • Do web crawlers/spiders index azure web sites?

    - by Clay Shannon
    For somebody who wants their web site to be as discoverable as possible (and who doesn't?), are Microsoft's Azure web sites (azurewebsites.net) a feasible domain to host sites? I have a site that is both on an azurewebsites.net and hosted under a completely different name by discountasp.net Both of these sites are exactly the same, except for the URL; whenever I update the code, I republish the site to/in both places. So obviosuly, they both have the same H1 and H2 elements. Searching for the value/content in my H1 tag, I find my .com site listed #3 on google and #2 on both Bing and Yahoo; OTOH, my azurewebsites.net site doesn't show up on the first page at all, in any of them. This makes me wonder if azurewebsites.net should only be used for Web API hosting and such-like, not for generic/commercial "public" sites. Are my conclusions valid?

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  • Adding a value to a 'datetime' column caused overflow.

    - by sathya
    Adding a value to a 'datetime' column caused overflow. Came across this error today. So thought of posting the same. Whenever you try to do a dateadd like this  dateadd(mm,12,datefield) you might face this error if the value in your records in the datefield is not a valid date or if u add some months or date to this value and the output of that will exceed the date range In my case i was just thinking what would be the error here. But unfortunately there was some data in the table which was there with the value (Ex:date of joining column) 1-1-9999 So my sql statement has tried to add 12 months to this and it had caused this error.

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  • OpenGraph tags and HTML5 validity

    - by netmano
    I have a HTML5 based page, and I inculded the OpenGraph tags according to it's documentation. Also I checked with Facebook Debug, and it can parse the metadata. But when I use W3C Validator, it reports the OG tags as error: Attribute content not allowed on element meta at this point. <meta property="fb:admins" content="...." /> Attribute content not allowed on element meta at this point. <meta property="og:url" content="http://www...."> They are all in the <head>. I would need my page be "valid" HTML5 and OG tags, as well. Could you help me giving a hint how can it be achieved? UPDATE: The name version also invalid: <meta name='fb:admins' content=''>

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  • changed /etc permission in oneiric (ubuntu11.10) by using "sudo chmod 665 /etc" cant use sudo now

    - by GuruDevil
    i screwed up big time. i changed the permission of /etc in ubuntu 11.10 by using following command sudo chmod 665 /etc now when ever i try to use sudo it gives the following error: sudo: can't open /etc/sudoers: Permission denied sudo: no valid sudoers sources found, quitting any help will be greatly appreciated because i am new to ubuntu....i have already tried using su but it doesnt even login as root and even i give it the right password it always say Authentication Failure......i dont want to login as root coz its risky and even a newbie in linux like me is not stupid enough to have such control...i just want to use my sudo again......i have tried to go into recovery mode as well but i cant get in to recovery mode......HELP please!!!

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  • IDirect3DDevice9Ex and D3DPOOL_MANAGED?

    - by bluescrn
    So I wanted to switch to IDirect3DDevice9Ex, purely for the SetFrameLatency function, as fullscreen vsynced D3D seemed to produce noticable input lag. But then it tells me 'ha ha ha! now you can't use D3DPOOL_MANAGED!': Direct3D9: (ERROR) :D3DPOOL_MANAGED is not valid with IDirect3DDevice9Ex Is this really as unpleasant as it looks (when you're relying quite heavily on managed resources) - or is there a simple solution? If it really does mean manual management of everything (reloading all static textures, VBs, and IBs on a device reset), is it worth the hassle, will IDirect3DDevice9Ex bring enough benefit to make it worth writing a new resource manager? Starting to think I must be doing something wrong, due to this: Direct3D9: (ERROR) :Lock is not supported for textures allocated with POOL_DEFAULT unless they are marked D3DUSAGE_DYNAMIC. So if I put my (static) textures in POOL_DEFAULT, they need flagging as D3DUSAGE_DYNAMIC, just because I lock them once to load the data in?

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  • How should a site respond to automated login attempts with phony usernames?

    - by qntmfred
    For the last couple weeks I've been seeing a consistent stream of 15-30 invalid login attempts per hours on my site. Many of them are non-sensical usernames that nobody would ever register for real, and often contain typical spam-related keywords. They all come from different IP addresses so I can't just IP block/throttle the requests. I'm not worried about unauthorized access to real accounts since they aren't using real usernames. And if it were a member of my site trying to brute force logins, they could easily scrape the valid usernames from the site, so I'm not worried about that kind of malicious behavior either. But what's the point of this type of activity? What would whichever bot operator is doing this have to gain by attempting all these logins?

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  • What should I call the process of converting an object to a string?

    - by shabbychef
    We are having a game of 'semantic football' in the office over this matter: I am writing a method for an object which will represent the object as a string. That string should be such that when typed (more likely, cut and pasted) into the interpreter window (I will keep the language name out of this for now), will produce an object which is, for our purposes, identical to the one upon which the method was called. There is a spirited discussion over the 'best' name for this method. The terms pickle, serialize, deflate, etc have been proposed. However, it seems that those terms assume some process for the de-pickling (unserialization, etc) that is not necessarily the language interpreter itself. That is, they do not specifically refer to the case where strings of valid code are produced. This is closer to a quine, but we are re-producing the object not the code, so this is not quite right. any suggestions?

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  • Outside Operations in JD Edwards EnterpriseOne Manufacturing

    - by Amit Katariya
    Upcoming E1 Manufacturing webcasts   Date: March 30, 2010Time: 10:00 am MDTProduct Family: JD Edwards EnterpriseOne Manufacturing   Summary This one-hour session is recommended for functional users who would like to understand the Outside Operations process overview, including Setup, Execution and Troubleshooting.   Topics will include: Concept Setup in context of PDM, SFC, Product Costing, and Manufacturing Accounting Processing Troubleshooting   A short, live demonstration (only if applicable) and question and answer period will be included. Register for this session Oracle Advisor is dedicated to building your awareness around our products and services. This session does not replace offerings from Oracle Global Support Services. Important links related to Webcasts Advisor Webcast Current Schedule Advisor Webcast Archived Recordings Above links requires valid access to My Oracle Support

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  • Why will Google Analytics not allow our URL?

    - by Linda H
    In Google Analytics we're trying to add a property for each website of a WordPress multisite network. It works well for all of the sub-site but one. In the Default URL field we used the following: www.mywebsite.no/ - works www.mywebsite.no/nurse - works, as does a few other sub-sites www.mywebsite.no/doctor - doesn't work In the last case we get the following error: Value is not a valid domain. (e.g. example.com, www.example.com) We can't change the name of the sub-site but GA just won't accept the URL. Why is this and what can we do to solve this?

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  • Google Goals process not working through similarly named pages

    - by David
    Well, I'm at a loss. I've ensured that my tracking script is in etc etc, and I've set up my goal and funnel path, but only the first step is ever being shown on the funnel. Goal URL: /checkout/checkoutComplete/ Type: Head Match ... but should this be /checkout/checkoutComplete/(.*) and set to regex rather because there are parameters after the main part of the URL (I thought that's what head match was for) Step 1: /checkout/ <-- required Step 2: /checkout/confirm/ both the above are valid and correct URLs for my domain. But for some reason, the funnel visualization shows entries into the first step, then an exits count that matches the entry count, including /checkout/confirm - but it doesn't go on to the next step! Perhaps I'm doing something obviously wrong...but I can't quite see it? Also, semi-related questions. Making a change to the funnel, does it only affect new incoming data? And how often does it update? Thanks in advance for your help.

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  • Whenever I try to remove a Debian package I receive an Error

    - by Brenton Horne
    Whenever I type into the terminal the command: sudo dpkg -r '/home/brentonhorne/Downloads/virtualbox.deb' I receive the error: dpkg: error: --remove needs a valid package name but '/home/brentonhorne/Downloads/virtualbox.deb' is not: illegal package name in specifier '/home/brentonhorne/Downloads/virtualbox.deb': must start with an alphanumeric character Type dpkg --help for help about installing and deinstalling packages [*]; Use `dselect' or `aptitude' for user-friendly package management; Type dpkg -Dhelp for a list of dpkg debug flag values; Type dpkg --force-help for a list of forcing options; Type dpkg-deb --help for help about manipulating *.deb files; Options marked [*] produce a lot of output - pipe it through `less' or `more' ! How do I get around this problem?

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  • Structuring game world entities and their rendering objects

    - by keithjgrant
    I'm putting together a simple 2d tile-based game. I'm finding myself spinning circles on some design decisions, and I think I'm in danger of over-engineering. After all, the game is simple enough that I had a working prototype inside of four hours with fewer than ten classes, it just wasn't scalable or flexible enough for a polished game. My question is about how to structure flow of control between game entity objects and their rendering objects. Should each renderer have a reference to their entity or vice-versa? Or both? Should the entity be in control of calling the render() method, or be completely oblivious? I know there are several valid approaches here, but I'm kind of feeling decision paralysis. What are the pros and cons of each approach?

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  • Possible automated Bing Ads fraud?

    - by Gary Joynes
    I run a website that generates life insurance leads. The site is very simple a) there is a form for capturing the user's details, life insurance requirements etc b) A quote comparison feature We drive traffic to our site using conventional Google Adwords and Bing Ads campaigns. Since the 6th January we have received 30-40 dodgy leads which have the following in common: All created between 2 and 8 AM Phone number always in the format "123 1234 1234' Name, Date Of Birth, Policy details, Address all seem valid and are unique across the leads Email addresses from "disposable" email accounts including dodgit.com, mailinator.com, trashymail.com, pookmail.com Some leads come from the customer form, some via the quote comparison feature All come from different IP addresses We get the keyword information passed through from the URLs All look to be coming from Bing Ads All come from Internet Explorer v7 and v8 The consistency of the data and the random IP addresses seem to suggest an automated approach but I'm not sure of the intent. We can handle identifying these leads within our database but is there anyway of stopping this at the Ad level i.e. before the click through.

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  • Is it a good practice to use branches to maintain different editions of the same software?

    - by Tamás Szelei
    We have a product that has a few different editions. The differences are minor: different strings here and there, very little additional logic in one, very little difference in logic in the other. When the software is being developed, most changes need to be added to each edition; however, there are a few that don't and a few that needs to differ. Is it a valid use of branches if I have release-editionA and release-editionB (..etc) branches? Are there any gotchas? Good practices? Update: Thanks for the insight everyone, lots of good answers here. The general consensus seems to be that it is a bad idea to use branches for this purpose. For anyone wondering, my final solution to the problem is to externalize strings as configuration, and externalize the differing logic as plugins or scripts.

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