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  • Mobile websites, where is it going to?

    - by Fadi Tiwari
    As building websites for mobile devices is becoming an important area I have a question that has some sub questions regarding this new field and the main question is: Will web development for mobile devices grow in the next few years? The sub questions are: Will there be standalone mobile web applications? meaning that a web application that is designed and developed to browse from mobile only? What about the advertisements and how can companies and freelancers get money from their mobile web applications? Cheers.

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  • If PHP websites represnt 70% of websites in my country then should I learn it?

    - by Fadi Tiwari
    In my country most of the sites are built using PHP and MySQL. Half of those sites use vbulletin and Wordpress. When it comes to companies, ministries and universities they use ASP.NET. I am not sure what should I learn to get more money as freelacer? Should I learn ASP.NET and focus my area to build companies and universities' sites? (And the question if they will know me one day and ask me to build any of their sites or not?) Or should I learn PHP and focus my business on people's sites and maybe some small formal sites? Which option will give me more money?

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  • Browser History ASP.Net AJAX: Microsoft.Web.Preview

    - by Narendra Tiwari
    I remember in 2006 we were working on a portal for our client Venetian, Las Vegas and the portal is full of AJAX features. One of my friend facing a challange to retain browser history with all AJAX operation. In terms of user experience it is an important aspect which could not be avoided in that scenario. Well that time we have made some workarounds to achieve the same but that may not be the perfect solution. Ok.. Now with Microsoft AJAX there are a lot of such features can be achieved with optimum efficiency. Microsoft AJAX has grown its features over the past few years. Microsoft.Web.Preview.dll is an addon in conjunction with ASP.Net AJAX. It contains a control named "History" for that purpose. Source code:- http://download.microsoft.com/download/8/3/1/831ffcd7-c571-4075-b8fa-6ff678794f60/CS-ASP-ASPBrowserHistoryinAJAX_cs.zip Below is a small sample to demonstrate the control. 1/ Get dll from the above source code bin, and add reference to your web application. 2/ Rightclick on toolbox panel and Choose Item, browse assembly. now you will be able to see History control. 3/ Add below section group in web.config under <configSections> <sectionGroup name="microsoft.web.preview" type="Microsoft.Web.Preview.Configuration.PreviewSectionGroup, Microsoft.Web.Preview"> <section name="search" type="Microsoft.Web.Preview.Configuration.SearchSection, Microsoft.Web.Preview" requirePermission="false" allowDefinition="MachineToApplication"/> <section name="searchSiteMap" type="Microsoft.Web.Preview.Configuration.SearchSiteMapSection, Microsoft.Web.Preview" requirePermission="false" allowDefinition="MachineToApplication"/> <section name="diagnostics" type="Microsoft.Web.Preview.Configuration.DiagnosticsSection, Microsoft.Web.Preview" requirePermission="false" allowDefinition="MachineToApplication"/> </sectionGroup> 4/ Now create a simple webpage a textbox (txt1), button (btn1)  in an updatePanel with History control (History1). We will fill in text box and post the fom by clicking button a few times then verify if the browse history is retained. Remember button and textbox must be inside UpdatePanel and History control outside the UpdatePanel. <%@Page Language="C#" AutoEventWireup="true" CodeFile="History.aspx.cs" Inherits="History" %> <%@ Register Assembly="Microsoft.Web.Preview" Namespace="Microsoft.Web.Preview.UI.Controls" TagPrefix="cc1" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" > <head runat="server"> <title>Untitled Page</title> </head> <body> <form id="form1" runat="server"> <asp:ScriptManager ID="ScriptManager1" runat="server" EnablePartialRendering="true"></asp:ScriptManager> <div> <cc1:History ID="History1" runat="server" OnNavigate="History1_Navigate"> </cc1:History> <asp:UpdatePanel ID="up1" runat="server"> <ContentTemplate> <asp:TextBox ID="txt1" runat="server"></asp:TextBox><br /> <asp:Button ID="btn1" runat="server" Text="Test" OnClick="btn1_Click" /> </ContentTemplate> <Triggers> <asp:AsyncPostBackTrigger ControlID="History1" /> </Triggers> </asp:UpdatePanel> </div> </form> </body> </html> 5/ Below code to add the textbox value in history everytime we post back using btn1 click.  protected void btn1_Click(object sender, EventArgs e) { History1.AddHistoryPoint("txtState",txt1.Text); } 6/ and finally Navigate event of History control protected void History1_Navigate(object sender, Microsoft.Web.Preview.UI.Controls.HistoryEventArgs args) { string strState = string.Empty; if (args.State.ContainsKey("txtState")) { strState = (string)args.State["txtState"]; } txt1.Text = strState; } Now all set to go :) Reference: http://www.dotnetglobe.com/2008/08/using-asp.html

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  • Hudson.. another Continuous Integration tool

    - by Narendra Tiwari
    In my previous posts I discussed about Cruisecontrol.net and its legacy support to .Net development. Hudson  is yet another continuous integration tool. Hudson is also free like CCNet and built in java. - CCNet has its legacy support to .Net applications where as Hudson can be easily configured on both the environments (.Net and Java). - One of the major differences in CCNet and Hudson is the richer GUI of Hudson provide user interactive screens for project configuration where as in CCNet we have to play with a few xml configuration files. Both the tools are capable of providing basic features of continuous integration e.g.:- - Source Control configuration - Code Compilation/Build - Ad hoc plugin tools to be configured along with compilation Support for adhoc tools seems to be bigger with CCNet e.g. There are almost every source control plugin available with CCNet where as Hudson has support for limited source control servers. Basically there is an interseting point to see is that there are 2 major partsof whole CI system one performed by build tool and rest. Build tool takes care of all adhoc plugin tools  so no matter if CI tool does not have plugin for that tool if thet tools provides command line support that can be configured in build tool and that build tool is then configured with CI tool inturn. For example if I have a build script configured in MSBuild and CCNet can be easily switched to Hudson. Here we need not to change anything in build script we just need to configure MSBuild on Hudson and pass the path of script file and thats it... all is same. Hudson Resources:- - https://hudson.dev.java.net/ - http://wiki.hudson-ci.org/display/HUDSON/Meet+Hudson - http://wiki.hudson-ci.org/display/HUDSON/Plugins - http://callport.blogspot.com/2009/02/hudson-for-net-projects.html Java support on CCNet http://confluence.public.thoughtworks.org/display/CC/Getting+Started+With+CruiseControl?focusedCommentId=19988484#comment-19988484 Please share your thoughts...

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  • CHM Issue: The page can not be displayed

    - by Narendra Tiwari
    Some times when we access few CHM (compiled HTML) files over network share, CHM content doed not display and shows an error "The Page Can not be displayed". This may be due to a Microsoft security update installed on your machine. Here is the resolution:- ======================================================================== REGEDIT4 [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\HTMLHelp] [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\HTMLHelp\1.x\HHRestrictions] "MaxAllowedZone"=dword:00000001 "UrlAllowList"="" [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\HTMLHelp\1.x\ItssRestrictions] "MaxAllowedZone"=dword:00000001 "UrlAllowList"="" ======================================================================== Put above content in a file and save as with .REG extension, then execute it from your machine. Thats it.. you should be able to view your CHM files. Reference

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  • Passing text message to web page from web user control

    - by Narendra Tiwari
    Here is a brief summary how we can send a text message to webpage by a web user control. Delegates is the slolution. There are many good articles on .net delegates you can refer some of them below. The scenario is we want to send a text message to the page on completion of some activity on webcontrol. 1/ Create a Base class for webcontrol (refer code below), assuming we are passing some text messages to page from web user control  - Declare a delegate  - Declare an event of type delegate using System; using System.Data; using System.Configuration; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Web.UI.HtmlControls; //Declaring delegate with message parameter public delegate void SendMessageToThePageHandler(string messageToThePage); public         } class ControlBase: System.Web.UI.UserControl { public ControlBase() { // TODO: Add constructor logic here }protected override void OnInit(EventArgs e) { base.OnInit(e); }private string strMessageToPass;/// <summary> /// MessageToPass - Property to pass text message to page /// </summary> public string MessageToPass { get { return strMessageToPass; } set { strMessageToPass = value; } }/// <summary> /// SendMessageToPage - Called from control to invoke the event /// </summary> /// <param name="strMessage">Message to pass</param> public void SendMessageToPage(string strMessage) {   if (this.sendMessageToThePage != null)       this.sendMessageToThePage(strMessage); } 2/ Register events on webpage on page Load eventthis.AddControlEventHandler((ControlBase)WebUserControl1); this.AddControlEventHandler((ControlBase)WebUserControl2); /// <summary> /// AddControlEventHandler- Hooking web user control event /// </summary> /// <param name="ctrl"></param> private void AddControlEventHandler(ControlBase ctrl) { ctrl.sendMessageToThePage += delegate(string strMessage) {   //display message   lblMessage.Text = strMessage; }; } References: http://www.akadia.com/services/dotnet_delegates_and_events.html     3/

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  • Running Teamsite User Admin tool IWUSERADM.exe from ASP.NET

    - by Narendra Tiwari
    It has really been a head scratching task for me. I 've tried many options but nothing worked. Finally I found a workaround on google to achive this by TaskScheduler. PROBLEM When we run Teamsite user administration command line tool IWUSERADM.exe though ASP.Net it gives following error: Application popup: cmd.exe - Application Error : The application failed to initialize properly (0xc0000142). Click on OK to terminate the application. CAUSE No specific cause, it seems to be a bug, supposed to be resolved with this Microsoft patch http://support.microsoft.com/kb/960266. and there is nothing related to permission issue, y web application is impersonated with an administrator account. off course running a bat file from dmin account is a potential secury threat but for this scenario lets conifned our discussion to run the command line tool. RESOLUTION I have not tried this patch as I have not permitted to run this patch on server. Below are the steps to achive the requirement. 1/ Create a batch file which runs the IWUSERADM.exe.         echo - Add Teamsite User    CD E:\Appli\GN00\iw-home\bin    iwuseradm add-user %1 2/ Temporarily create a schedule task and run  the .bat file by scheduled task by ASP.Net code using TaskScheduler http://www.codeproject.com/KB/cs/tsnewlib.aspx. 3/ Here is the function: private int AddTeamsiteUser(string strBatchFilePath, string strUser) { //Get a ScheduledTasks object for the local computer. ScheduledTasks st = new ScheduledTasks(); // Create a task Task t; try{ t = st.CreateTask("~AddTeamsiteUser"); } catch { throw new Exception("Schedule Task ~AddTeamsiteUser already exist."); }    t.SetAccountInformation(yourLogin, yourPassword); //Set the account under which the task should run.  t.Save();  t.Run(); Thread.Sleep(2000); //for sync issue //Remove the scheduled task st.DeleteTask("~AddTeamsiteUser"); return t.ExitCode;   Below are few resources related to the above scenario:- - Task Scheduler Class Library for .NET  http://www.codeproject.com/KB/cs/tsnewlib.aspx - Run a .BAT file from ASP.NET  http://codebetter.com/blogs/brendan.tompkins/archive/2004/05/13/13484.aspx - TaskScheduler Class  http://msdn.microsoft.com/en-us/library/system.threading.tasks.taskscheduler.aspx - Application Hangs whle running iwuseradm.exe through ASP.Net  http://bytes.com/topic/asp-net/answers/733098-system-diagnostics-process-hangs     t.ApplicationName = strBatchFilePath; t.Parameters = strUser; t.Comment = "Adding user to Teamsite Application"

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  • XML is case sensitive hence Xml parser (XmlDocument) too...

    - by Narendra Tiwari
    XML is case sensitive hence Xml parser (XmlDocument) too... In below example I am trying to search the <user> element node with name attibute as 'pupu'.  <user name="PuPu" fullname="Priyanka T" email="[email protected]" /> ::translate() functon esures the case insensitive comparision in Xpath expression.   XmlDocument xmlDoc = new XmlDocument(); xmlDoc.Load("<xml file to load>"); XmlElement userElement = (XmlElement)xmlDoc.DocumentElement.SelectSingleNode("//user[translate(@name,'ABCDEFGHIJKLMNOPQRSTUVWXYZ', 'abcdefghijklmnopqrstuvwxyz') ='pupu']");

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  • How to remove Visual J# .NET from installation package (MSI)

    - by Narendra Tiwari
    While creating Web Setup, Visual J# .NET automatically included in the MSI package.When we install this MSI on a server machine which does not have Visual J# .NET installed, installer prompts a message to install Visual J# .NET. Usually we dont need to install Visual J# .NET and it can be avoided to add into installer. To do this:- - Open setUp project (.vdproj) file in a text editor.- Find below section for LauchCondition for Visual J# .NET and remove it."LaunchCondition"        {            "{836E08B8-0285-4809-BA42-01DB6754A45D}:_237E8F40F1A4464FBD27D8992CFDD623"            {            "Name" = "8:Visual J# .NET"            "Condition" = "8:REQ_VJSLIB_VER_PRESENT = \"TRUE\""            "Message" = "8:[VSDVJSMSG]"            "InstallUrl" = "8:http://msdn.microsoft.com/vjsharp"            }            "{836E08B8-0285-4809-BA42-01DB6754A45D}:_DF1CA2119CD64D4B94CE993CF1624ACE"            {            "Name" = "8:IIS Condition"            "Condition" = "8:IISVERSION >= \"#4\""            "Message" = "8:[VSDIISMSG]"            "InstallUrl" = "8:"            }        }- Save .vdproj file and Build again to generate new MSI installer.- Install the MSI on a new machine again where J# does not exist, It should not prompt the same message to install J#.

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  • Graphic issue on intel945 chipset

    - by peeyush tiwari
    I used Intrepid(8.10) and my graphics used to work fine with compiz effects and all(on better resolution than 1024x768).Now I have upgraded to Precise(12.04)but I use gnome classic(with compiz effects)as my desktop but the compiz effects seem not to work, only unity 2D works. When I ran lshw -c video it gives: *-display UNCLAIMED description: VGA compatible controller product: 82945G/GZ Integrated Graphics Controller vendor: Intel Corporation physical id: 2 bus info: pci@0000:00:02.0 version: 02 width: 32 bits clock: 33MHz capabilities: msi pm vga_controller bus_master cap_list configuration: latency=0 resources: memory:fea80000-feafffff ioport:dc00(size=8) memory:e0000000-efffffff memory:fea40000-fea7ffff Sysinfo shows: Display Resolution 1024x768 pixels OpenGL Renderer Gallium 0.4 on llvmpipe(LLVM 0x300) X11 Vendor The X.Org Foundation On SystemSettings: Memory 993.3 MiB Processor Intel® Pentium(R) 4 CPU 2.40GHz Graphics VESA: Intel(r) 82945G Chipset Family Graphics OS type 32-bit glxgears output comes to be around 100fps which used to be around 900fps in Intrepid

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  • Silverlight Cream for May 12, 2010 -- #860

    - by Dave Campbell
    In this Issue: Miroslav Miroslavov(-2-), Mike Snow(-2-, -3-), Paul Sheriff, Fadi Abdelqader, Jeremy Likness, Marlon Grech, and Victor Gaudioso. Shoutouts: Andy Beaulieu has a cool WP7 game up and is looking for opinions/comments: Droppy Pop: A Windows Phone 7 Game Karl Shifflett has code and video tutorials up for the app he wrote for the WPF LOB tour he just did: Stuff – WPF Line of Business Using MVVM Video Tutorial From SilverlightCream.com: Flipping panels I had missed this 3rd part of the CompleteIT explanation. In this post Miroslav Miroslavov describes the page flipping they're doing. Great explanation and all the code included. Flying objects against you The 4th part of the CompleteIT explanation is blogged by Miroslav Miroslavov where he is discussing the screen elements 'flying toward' the user. Silverlight Tip of the Day #17 – Double Click Mike Snow's Tip of the Day 17 is showing how to implement mouse double-clicks either for an individual control or for an entire app. Silverlight Tip of the Day #18 – Elastic Scrolling In Mike Snow's Tip of the Day 18, he's talking about and showing some 'elastic' scrolling in his image viewer application. He's asking for opinions and suggestions. Silverlight Tip of the Day #19 – Using Bing Maps in Silverlight Mike Snow's Tips are getting more elaborate :) ... Number 19 is about using the BingMap control in your Silverlight app. Control to Control Binding in WPF/Silverlight Paul Sheriff demonstrates control to control binding... saving a bunch of code behind in the process. Project included. Your First Step to the Silverlight Voice/Video Chatting Client/Server Fadi Abdelqader has a post up at CodeProject using the WebCam and Mic features of Silverlight 4 to setup a voice & video chatting app. MVVM Coding by Convention (Convention over Configuration) Jeremy Likness discusses Convention over Configuration and gives up some good MVVM nuggets along the way... check out his nice long post and grab the source for the project too... and also check out the external links he has in there. MEFedMVVM changes >> from cool to cooler Marlon Grech has refactored MEFedMVVM, and in addition is working with other MVVM framework folks to use some of the same MEF techniques in theirs... code on CodePlex New Silverlight Video Tutorial: How to Create a Silverlight Paging System to Load new Pages In Victor Gaudioso's latest video tutorial he builds a ContentHolder UserControl that will load any page on demand into your MainPage.xaml Stay in the 'Light! Twitter SilverlightNews | Twitter WynApse | WynApse.com | Tagged Posts | SilverlightCream Join me @ SilverlightCream | Phoenix Silverlight User Group Technorati Tags: Silverlight    Silverlight 3    Silverlight 4    Windows Phone MIX10

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  • Using Subversive to move the head back one revision

    - by Fadi Chalfoun
    Using Eclipse/Subversive I commanded it to delete a branch of mine. Unfortunately it also took the liberty of wiping out my trunk folder. SVN isn't my strong suit so I am trying to figure out how to get Subversive to move it's head back one revision so the trunk/branch that was deleted re-appears again. Anyone have any ideas? Thanks!

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  • iPad: SplitView does not rotate

    - by raj.tiwari
    I have the following setup: A subclass of UISplitViewController that creates the master and detail view controllers in the constructor. Master and Detail view controllers that both override shouldAutorotateToInterfaceOrientation to return `YES'. Detail view controller implements the UISplitViewControllerDelegate protocol and deals with the popover. I am observing two weird issues that might be interrelated: When the split view comes up (in portrait mode - default on simulator), the Master view is visible. It should not be. When I rotate the simulator, the view does not "right" itself. My UISplitViewController subclass does not override shouldAutorotateToInterfaceOrientation. However, both master and details view controllers do and return YES. Any ideas what I might be doing wrong? Is this a simulator bug? Thanks. -Raj

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  • C#/.Net: What are the best practices for setting ResXResourceReader's basepath?

    - by raj.tiwari
    I am working on a Windows Forms application in C#/.Net. I want to use a resource file that contains translations of my strings. My my project in visual studio I have the following hierarchy: Project CS files ... Resources\ resource.en-US.resx I am trying to read in the resource file as follows: m_ResourceReader = new ResXResourceReader("resources/resource.en-US.resx"); When I run this project, Visual Studio seems to look for the resources folder in the bin/Debug output folder of my project. My questions are: What is the right way to reference a resource file? I would like my installer to place this resource file under my application's folder under Program Files\MyApp\resources\resource.en-US.resx. What would be the way to make ResXResourceReader read it from that location. Thanks for your help. -Raj

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  • Visual Studio: How to protect file from removal on uninstall

    - by raj.tiwari
    Folks, I am creating an installer project in Visual Studio. This is done using a project of type "Setup and Deployment". I lay out the file structure of my final install in the "File System" View of the project. Now, some of the files I create as part of my install are updated while my application is used. I would like these files to not be removed during an uninstall of my application. Is there any way in Visual Studio to designate a file as "protected from uninstall"? Thanks for your help.

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  • iPad UI clipped in simulator

    - by raj.tiwari
    My views created for iPad form factor look fine in Interface Builder. However, when I debug my app in iPhone Simulator 3.2 (with Hardware - Device set to iPad), I see the UI clipped and about half size. There is a 2x button at the bottom which lets me zoom in. But this just shows the same clipped UI in double size. This is really weird since I have created the XIB for iPad form factor and it is supposed to fit iPad completely. Any ideas what I might be doing wrong? I am using iPhone SDK 3.2 downloaded on 4/30/2010. Thanks. -Raj

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  • OMAP 3530: How fast can I toggle an IO?

    - by raj.tiwari
    I am putting together an application for OMAP 3530 SoC. This application will run some user interface code on embedded linux and invoke waveform generation code on the DSP. The DSP and Linux sides will interact over DSP/BIOS link. My questions are: What is the highest frequency at which my DSP-side code can toggle a GPIO line? If I want to toggle multiple GPIO lines at this hight rate, how fast can I go? Thanks for any insights. -Raj

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  • Shopping list for developing Windows app on Mac

    - by raj.tiwari
    Folks, I need to maintain a C#/.Net desktop application. So, I need to set myself up with Windows(7?) and Visual Studio. My current development machine is a Macbook Pro and I would like to continue using it. Overall, I am considering the following recipe: Install VMWare Fusion or Parallels or VirtualBox for running the Windows OS Buy a version of Windows to develop on Buy Windows Developer tools Having been in the open source universe all this time, I am utterly unfamiliar with the options/packages in the Windows world. I could use some help on the following: Does the recipe above look fine, or do I need to change something? What is a good VM environment to buy/use? VirtualBox is free, but Parallels/VMWare promise Windows app that blend in with my Mac windows. Could use some help on this topic Does MSFT sell a package deal which has bare bones Windows 7 and the necessary dev tools, or do I need to buy the OS and dev tools separately? Since I only need Windows to churn this C# desktop application, What is the OS version and flavor or Visual Studio I should get? Thanks in advance for any pointers. -Raj

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  • How to package .Net framework in Visual Studio project?

    - by raj.tiwari
    I have created a C#/.Net application using visual studio. I have also created an installer project that puts out two files: An MSI file Setup.exe file In my installer project properties I have setup .Net 3.5 as a prerequisite. What I would like my installer to do as as follows: Put out a single file (MSI/exe/whatever) that also includes .Net framework prerequisite The installer should check whether .Net framework is installed on the target machine. If not, it should install it from its own bundled copy. Right now my installer sends people to the web for getting .Net. This is not the user experience I want. Thanks for your help. -Raj

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  • iPad/iPhone: Form filling application pointers

    - by raj.tiwari
    Folks, I am starting work on an iPad/iPhone application that is essentially a form-filing UI. The requirement is to present a (rather large) form to the user. The form is composed of sections and questions, like so: Form Question 0.1 Question 0.2 Section 1 Question 1.1 etc. The user can take various paths down the form based on answers to questions. I would like to architect this by defining a declarative markup that can be used to author the form questionnaire including traversal rules. My questions are: Can anyone recommend a markup/language that would satisfy the declaration requirement? Is there any existing library that would ease the implementation as described above? Thanks for your time.

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  • Custom Memory Allocator for STL map

    - by Prasoon Tiwari
    This question is about construction of instances of custom allocator during insertion into a std::map. Here is a custom allocator for std::map<int,int> along with a small program that uses it: #include <stddef.h> #include <stdio.h> #include <map> #include <typeinfo> class MyPool { public: void * GetNext() { return malloc(24); } void Free(void *ptr) { free(ptr); } }; template<typename T> class MyPoolAlloc { public: static MyPool *pMyPool; typedef size_t size_type; typedef ptrdiff_t difference_type; typedef T* pointer; typedef const T* const_pointer; typedef T& reference; typedef const T& const_reference; typedef T value_type; template<typename X> struct rebind { typedef MyPoolAlloc<X> other; }; MyPoolAlloc() throw() { printf("-------Alloc--CONSTRUCTOR--------%08x %32s\n", this, typeid(T).name()); } MyPoolAlloc(const MyPoolAlloc&) throw() { printf(" Copy Constructor ---------------%08x %32s\n", this, typeid(T).name()); } template<typename X> MyPoolAlloc(const MyPoolAlloc<X>&) throw() { printf(" Construct T Alloc from X Alloc--%08x %32s %32s\n", this, typeid(T).name(), typeid(X).name()); } ~MyPoolAlloc() throw() { printf(" Destructor ---------------------%08x %32s\n", this, typeid(T).name()); }; pointer address(reference __x) const { return &__x; } const_pointer address(const_reference __x) const { return &__x; } pointer allocate(size_type __n, const void * hint = 0) { if (__n != 1) perror("MyPoolAlloc::allocate: __n is not 1.\n"); if (NULL == pMyPool) { pMyPool = new MyPool(); printf("======>Creating a new pool object.\n"); } return reinterpret_cast<T*>(pMyPool->GetNext()); } //__p is not permitted to be a null pointer void deallocate(pointer __p, size_type __n) { pMyPool->Free(reinterpret_cast<void *>(__p)); } size_type max_size() const throw() { return size_t(-1) / sizeof(T); } void construct(pointer __p, const T& __val) { printf("+++++++ %08x %s.\n", __p, typeid(T).name()); ::new(__p) T(__val); } void destroy(pointer __p) { printf("-+-+-+- %08x.\n", __p); __p->~T(); } }; template<typename T> inline bool operator==(const MyPoolAlloc<T>&, const MyPoolAlloc<T>&) { return true; } template<typename T> inline bool operator!=(const MyPoolAlloc<T>&, const MyPoolAlloc<T>&) { return false; } template<typename T> MyPool* MyPoolAlloc<T>::pMyPool = NULL; int main(int argc, char *argv[]) { std::map<int, int, std::less<int>, MyPoolAlloc<std::pair<const int,int> > > m; //random insertions in the map m.insert(std::pair<int,int>(1,2)); m[5] = 7; m[8] = 11; printf("======>End of map insertions.\n"); return 0; } Here is the output of this program: -------Alloc--CONSTRUCTOR--------bffcdaa6 St4pairIKiiE Construct T Alloc from X Alloc--bffcda77 St13_Rb_tree_nodeISt4pairIKiiEE St4pairIKiiE Copy Constructor ---------------bffcdad8 St13_Rb_tree_nodeISt4pairIKiiEE Destructor ---------------------bffcda77 St13_Rb_tree_nodeISt4pairIKiiEE Destructor ---------------------bffcdaa6 St4pairIKiiE ======Creating a new pool object. Construct T Alloc from X Alloc--bffcd9df St4pairIKiiE St13_Rb_tree_nodeISt4pairIKiiEE +++++++ 0985d028 St4pairIKiiE. Destructor ---------------------bffcd9df St4pairIKiiE Construct T Alloc from X Alloc--bffcd95f St4pairIKiiE St13_Rb_tree_nodeISt4pairIKiiEE +++++++ 0985d048 St4pairIKiiE. Destructor ---------------------bffcd95f St4pairIKiiE Construct T Alloc from X Alloc--bffcd95f St4pairIKiiE St13_Rb_tree_nodeISt4pairIKiiEE +++++++ 0985d068 St4pairIKiiE. Destructor ---------------------bffcd95f St4pairIKiiE ======End of map insertions. Construct T Alloc from X Alloc--bffcda23 St4pairIKiiE St13_Rb_tree_nodeISt4pairIKiiEE -+-+-+- 0985d068. Destructor ---------------------bffcda23 St4pairIKiiE Construct T Alloc from X Alloc--bffcda43 St4pairIKiiE St13_Rb_tree_nodeISt4pairIKiiEE -+-+-+- 0985d048. Destructor ---------------------bffcda43 St4pairIKiiE Construct T Alloc from X Alloc--bffcda43 St4pairIKiiE St13_Rb_tree_nodeISt4pairIKiiEE -+-+-+- 0985d028. Destructor ---------------------bffcda43 St4pairIKiiE Destructor ---------------------bffcdad8 St13_Rb_tree_nodeISt4pairIKiiEE Last two columns of the output show that an allocator for std::pair<const int, int> is constructed everytime there is a insertion into the map. Why is this necessary? Is there a way to suppress this? Thanks! Edit: This code tested on x86 machine with g++ version 4.1.2. If you wish to run it on a 64-bit machine, you'll have to change at least the line return malloc(24). Changing to return malloc(48) should work.

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  • SQL Authority News – Presenting at SQL Bangalore on May 3, 2014 – Performing an Effective Presentation

    - by Pinal Dave
    SQL Bangalore is a wonderful community and we always have a great response when we present on technology. It is SQL User Group and we discuss everything SQL there. This month we have SQL Server 2014 theme and we are going to have a community launch on this subject. We have the best of the best speakers presenting on SQL Server 2014 technology. Looking at the whole line of celebrity speakers, I have decided not to present on SQL Server. I will be presenting on the performance tuning subject, but with the twist of soft skills. I will be presenting on “Performing an Effective Presentation“. Trust me, you do not want to miss this presentation, I will be presenting on how to present effectively when presenting SQL Server topics. What this session will NOT have I personally believe that we all are good presenters most of the time. We can all easily call out if someone is bad presenter. There is no point talking about basics like bigger bullet points, talk loudly, talk with confidence, use better analogies etc. In simple words – this is not going to some philosophy session and boring notes. What this session will have Well, this session will tell stories of my life. It will tell how we can present about technology and SQL Server with the help of stories and personal experience. I am going to tell stories about two legends  who have inspired me. Right after that we will be doing two exercises together where we will learn quickly and effectively, how to become better speaker – instantly! There is no video recording of this session. If you want to get resources from this session, please sign up my newsletter at http://bit.ly/sqllearn Here are few of the slides from this presentation: Here is the details about the event and location Venue:Microsoft Corporation, Signature Building,Embassy Golf Links Business Park, Intermediate Ring Road, Domlur, Bangalore – 560071 The agenda is amazing – we have top line SQL Speakers. Everyone is welcome and don’t forget to get your friend along for this event. Loads to learn and tons to share !!! Keynote (20 mins) by Anupam Tiwari – Business Program Manager – GTSC Backup Enhancements with SQL Server 2014 by Amit Banerjee – PFE Microsoft Performance Enhancements with SQL Server 2014 by Sourabh Agarwal - PFE Microsoft LUNCH BREAK Performing an effective Presentation by Pinal Dave – Community Member (SQLAuthority.com) InMemory Enhancements with SQL Server 2014 by Balmukund Lakhani – Support Escalation Engg. Microsoft Some more lesser known enhancements with SQL Server 2014 by Vinod Kumar – Technical Architect Microsoft MTC Power Packed – Power BI with SQL Server by Kane Conway – Support Escalation Engg. Microsoft I am very big fan of Amit, Balmukund and Vinod – I have always watched their session and this time, I am going to once again attend their session without missing a single min. They are SQL legends, I am going to be there and learn when they are sharing their knowledge.  Reference: Pinal Dave (http://blog.sqlauthority.com)Filed under: PostADay, SQL, SQL Authority, SQL Query, SQL Server, SQL Tips and Tricks, SQLAuthority Author Visit, T SQL

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