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  • Good C++ books regarding Performance?

    - by Leon
    Besides the books everyone knows about, like Meyer's 3 Effective C++/STL books, are there any other really good C++ books specifically aimed towards performance code? Maybe this is for gaming, telecommunications, finance/high frequency etc? When I say performance I mean things where a normal C++ book wouldnt bother advising because the gain in performance isn't worthwhile for 95% of C++ developers. Maybe suggestions like avoiding virtual pointers, going into great depth about inlining etc? A book going into great depth on C++ memory allocation or multithreading performance would obviously be very useful.

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  • Unable to cast object of type MyObject to type MyObject

    - by Robert W
    I have this scenario where a webservice method I'm consuming in C# returns a Business object, when calling the webservice method with the following code I get the exception "Unable to cast object of type ContactInfo to type ContactInfo" in the reference.cs class of the web reference Code: ContactInfo contactInfo = new ContactInfo(); Contact contact = new Contact(); contactInfo = contact.Load(this.ContactID.Value); Any help would be much appreciated.

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  • Silverlight webservice

    - by pistacchio
    Hi, Can webservices be accessed by Silverlight 3? On VisualStudio, a Silverlight project doesn't allow me to add a "web reference" but only a "web service reference" that is for WCF and not "normal" webservices. Any help? Thanks

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  • How to convert series of MP3 to a M4B in a batch

    - by Artem Tikhomirov
    I have a batch of MP3 based books. Some of them divide into files according to book's own structure: chapters and so on. Some of them was just divided into equally lengthened parts. So. I've bought an iPhone, and I want to convert them all to M4B format. How could I convert them in a batch? I mean how cold I set up a process once, for each book, and then, after couple of weeks, receive totally converted library. The only able program for such conversion I've found was Audiobook Builder for a Mac. But it is pretty slow and do not support batching in principle. Solutions for any platform, please.

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  • Calling Class from another File ASP.NET VB.NET

    - by davemackey
    Lets say I have a class like this in class1.vb: Public Class my_class Public Sub my_sub() Dim myvar as String myvar = 10 Session("myvar") = myvar End Sub End Class Then I have a ASP.NET page with a code-behind file, default.aspx and default.aspx.vb and I want to call my_class. I'm doing the following, but it doesn't work: Imports my_app.my_class Partial Public Class _default Inherits System.Web.UI.Page Protected Sub Page_Load(ByVal sender as Object, ByVal e as System.EventArgs) Handles Me.Load my_class() End Sub End Class I get a "Reference to a non-shared member requires an object reference"

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  • Getting namespace name not found for ASP.net user control

    - by Joel Barsotti
    So I'm having problems when I try to publish the website. I'm in visual studio 2008 sp1. I've got a bunch of user controls and on a few pages I'm using them programatically. I've got a reference on the aspx page <%@ Reference Control="~/UserControls/Foo.ascx" % Then on the code behing I use ASP.usercontrols_foo newFoo control = (ASP.usercontrols_foo)Page.LoadControl("~/UserControls/Foo.ascx"); If I navigate to the page it works fine, but when I goto publish the website I get a compile time error.

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  • Master page property access from Content page.

    - by Manish
    FROM BOOK: To reference public properties in a master page, we add the @MasterType declaration to the content page and reference the property using Master.<PropertyName>. QUESTION: But what happens internally? Does all of the master's and content page's properties, function gets complied into one class? Or something else?

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  • Can somebody help me install this jBPM based workflow management suite?

    - by Eternal Saint
    1.Its a book Workflow Interface software available at sourceforge http://bookworkflowint.sourceforge.net/ Any instructions on installing and configuring it would be great especially in windows, however I can try Linux specific ones as well. I could not find any installation instructions. I posted this in stackoverflow by mistake and was directed here. 2.Can you guys suggest any good scanning/digitization workflow software (document imaging) that I can adopt to my scanner software? Infact even a simple one would do may be based on hotfolders. I just want to be able to track the uniqueid/barcode of the scanned book, its status so that its not scanned again. It books or manuscripts could be in millions page count. I thought of using some kind of generic bug tracking tool, just track a few fields, dont know if its the right choice Thank you very much

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  • WCF : FaultContract(typeof(ExceptionDetail)) issue

    - by jitus
    I have put the attribute [FaultContract(typeof(ExceptionDetail))] for my operation contract. When I am trying to add the service th' a client app, I get this error - "Custom tool error: Failed to generate code for the service reference 'ServiceReference1'. Please check other error and warning messages for details." But when I comment out the FaultContract Attribute, I am able to add the wcf service reference th' my client app. Would appreciate if somebody can help me solve this mystery. Thanks

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  • Converting a Word document to LaTeX format

    - by Mehper C. Palavuzlar
    I'm preparing a book to be published and keeping everything in .docx files. Other than text the files include graphs (jpeg) and lots of equations typed in MathType. Since MS Word is not fully appropriate to balance text and shapes according to book format, some pages are having spacings at the bottom after some text, and then comes a shape on the next page. I know that LaTeX is very good at formatting, so is it possible to convert MS Word documents (or PDF documents, since I can easily convert them to PDF) into LaTeX format so that I can handle my work in LaTeX from now on?

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  • Generate or update a PDF to include an encrypted, hidden watermark?

    - by Dave Jarvis
    Background Using LaTeX to write a book. When a user purchases the book, the PDF will be generated automatically. Problem The PDF should have a watermark that includes the person's name and contact information. Question What software meets the following criteria: Applies encrypted, invisible watermarks to a PDF Open Source Platform independent (Linux, Windows) Fast (marks a 200 page PDF in under 1 second) Batch processing (exclusively command-line driven) Collusion-attack resistant Non-fragile (e.g., PDF - EPS - PDF still contains the watermark) Well documented (shows example usages) Ideas & Resources Some thoughts and findings: Natural language processing (NLP) watermarks. Apply steganography on a randomly selected image. http://openstego.sourceforge.net/cmdline.html The problem with NLP is that grammatical errors can be introduced. The problem with steganography is that the images are sourced from an image cache, and so recreating that cache with watermarked images will impart a delay when generating the PDF (I could just delete one image from the cache, but that's not an elegant solution). Thank you!

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  • Mail.app - What sets sort order when adding To addresses by typing Group name?

    - by Meltemi
    Using Mail.app in Mac OS X (10.6.3) I'm seeing apparently random sort order when sending a email to a group. Not a major issue but you'd think it be alphabetical?!? To reproduce: Compose New Message in Mail.app Type in a group name from your Address Book The addresses from that group will populate the To: field in apparently random fashion FYI- You'd think that choosing Edit Distribution List… in Address Book would let you sort the list...but nope! Anyone know what/how to set this sort order?

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  • How to generate user-specific PDF with encrypted hidden watermark?

    - by Dave Jarvis
    Background Using LaTeX to write a book. When a user purchases the book, the PDF will be generated automatically. Problem The PDF should have a watermark that includes the person's name and contact information. Question What software meets the following criteria: Applies encrypted, undetectable watermarks to a PDF Open Source Platform independent (Linux, Windows) Fast (marks a 200 page PDF in under 1 second) Batch processing (exclusively command-line driven) Collusion-attack resistant Non-fragile (e.g., PDF - EPS - PDF still contains the watermark) Well documented (shows example usages) Ideas & Resources Some thoughts and findings: Natural language processing (NLP) watermarks. Apply steganography on a randomly selected image. http://openstego.sourceforge.net/cmdline.html The problem with NLP is that grammatical errors can be introduced. The problem with steganography is that the images are sourced from an image cache, and so recreating that cache with watermarked images will impart a delay when generating the PDF (I could just delete one image from the cache, but that's not an elegant solution). Thank you!

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  • Calculating IOPS for a single HDD - what am I doing wrong?

    - by red888
    So I know there is no standardized way of calculating IOPS for a HDD, but from everything I have read it appears one of the most accurate formulas is the following: IOP/ms = + {rotational latency} + ({block size} / {data transfer rate}) Which is IOs per millisecond or what the book I've been reading calls "Disk Service Time". Also rotational latency is calculated as half of one rotation in milliseconds. This was taken from the EMC book "Information Storage and Management" -arguably a pretty reliable source right\wrong? Putting this formula into practice consider this Seagate data sheet. I am going to calculate IOPS for the ST3000DM001 model for a block size of 4kb: Seek Average (Write) = 9.5 -I'll measuring IOPS for writes Spindle speed = 7200rpm Average Data Rate = 156MB/s So my variables are: Seek Time = 9.5ms Rotational latency = (.5 / (7200rpm / 60)) = 0.004s = 4ms Data Rate = 156MB/s = (0.156MB/ms / 0.004MB) = 39 9.5ms + 4ms + 39 = IO/ms 52.5 1 / (52.5 * 0.001) = 19 IOPS 19 IOPS for this drive clearly is not right so what am I doing wrong?

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  • Xml.Linq library in Silverlight 3.0

    - by Jayesh
    Hi, I am working on a Silverlight 3.0 application I have added a reference to the System.Xml.linq dll. I can also can see it in the references folder of my Silverlight app. however when I try to use it [using System.Xml.linq] it says are you missing an assembly reference! I am stumped! Please help

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  • Javascript objects: get parent

    - by Dänu
    Hey Guys I got some question about nested javascript objects (is it me, google or is javascript quite poorly documented?). Now, I got the following (nested) object: obj: { subObj: { 'hello world' } }; next thing I do is to reference the subobject like this: var s = obj.subObj; now what I would like to do, is to get a reference to the object obj out of the variable s. Something like: var o = s.parent; Is this somehow possible?

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  • Version control: delete branches after merging?

    - by Nathan Long
    When you branch some code, finish working with the branch, and merge it back to the trunk, what do you do with the branch? Delete it from the repository? Keep it for reference? It seems like you would keep it for reference, but I imagine the /branches directory could get pretty cluttered. (If this isn't something people generally agree on, please comment and I'll make it a community wiki.)

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  • GAE Datastore: persisting referenced objects

    - by David
    Two "I'm sorries" to begin with: 1) I've looked for a solution (here, and elsewhere), and couldn't find the answer. 2) English is not my mother tongue, so I may have some typos and the sort - please ignore them. To the point: I am trying to persist Java objects to the GAE datastore. I am not sure as to how to persist object having ("non-trivial") referenced object. That is, assume I have the following. public class Father { String name; int age; Vector<Child> offsprings; //this is what I call "non-trivial" reference //ctor, getters, setters... } public class Child { String name; int age; Father father; //this is what I call "non-trivial" reference //ctor, getters, setters... } The name field is unique in each type domain, and is considered a Primary-Key. In order to persist the "trivial" (String, int) fields, all I need is to add the correct annotation. So far so good. However, I don't understand how should I persist the home-brewed (Child, Father) types referenced. Should I: Convert each such reference to hold the Primary-Key (a name String, in this example) instead of the "actual" object. So, Vector<Child> offsprings; becomes Vector<String> offspringsNames; ? If that is the case, how do I handle the object at run-time? Do I just query for the Primary-Key from Class.getName, to retrieve the refrenced objects? Convert each such reference to hold the actual Key provided to me by the Datastore upon the proper put() operation? So, Vector<Child> offsprings; becomes Vector<Key> offspringsHashKeys; ? I would very much appreciate all kinds of comments. I have read ALL the offical relevant GAE docs/example. Throughout, they always persist "trivial" references, natively supported by the Datastore (e.g. in the Guestbook example, only Strings, and Longs). Many thanks, David

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  • Using Crypt32 with Dev-Cpp - Unable to link to CryptUnprotectData

    - by jgworks
    While trying to compile the example code from 'Example C Program: Using CryptProtectData' I ran into a roadblock; The linker cannot find CryptUnprotectData. Here is the console output: Compiler: Default compiler Building Makefile: "C:\Dev-Cpp\test\Makefile.win" Executing make... make.exe -f "C:\Dev-Cpp\test\Makefile.win" all gcc.exe main.o -o "Project1.exe" -L"C:/Dev-Cpp/lib" -l crypt32 main.o(.text+0xcb):main.c: undefined reference to `CryptProtectData' main.o(.text+0x121):main.c: undefined reference to `CryptUnprotectData' collect2: ld returned 1 exit status make.exe: *** [Project1.exe] Error 1 Execution terminated

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  • Virtual Machine Performance - More RAM or More Processor?

    - by webworm
    When looking to improve Virtual Machine performance what would be better ... Increasing the available RAM or increasing the processor power? Here is my choice ... Core 2 Duo @ 2.4 GHz with 8 GB RAM and integrated graphics (Mac Book Pro 13") Core i7 @ 2.6 GHz with 4 GB RAM and 512 MB dedicated graphics (Mac Book Pro 15") I plan to run Windows x64 in the VM with SQL Server 2008, Visual Studio 2010, and SharePoint 2010. I am planning to run VMWare Fusion v3. I also didn't know if a dedicated graphics card makes a difference when using a Virtual Machine. Thank you.

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  • Delphi memory management design strategies : Object or Interface ?

    - by Pierre-Jean Coudert
    Regarding Delphi memory management, what are your design strategies ? What are the use cases where you prefer to create and release Objects manually ? What are the uses cases where Interfaces, InterfacedObjects, and their reference counting mechanism will be prefered ? Do you have identified some traps or difficulties with reference counted objects ? Thanks for sharing your experience here.

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  • How to access static members in a Velocity template?

    - by matt b
    I'm not sure if there is a way to do this in Velocity or not: I have a User POJO which a property named Status, which looks like an enum (but it is not, since I am stuck on Java 1.4), the definition looks something like this: public class User { // default status to User private Status status = Status.USER; public void setStatus(Status status) { this.status = status; } public Status getStatus() { return status; } And Status is a static inner class: public static final class Status { private String statusString; private Status(String statusString) { this.statusString = statusString; } public final static Status USER = new Status("user"); public final static Status ADMIN = new Status("admin"); public final static Status STATUS_X = new Status("blah"); //.equals() and .hashCode() implemented as well } With this pattern, a user status can easily be tested in a conditional such as if(User.Status.ADMIN.equals(user.getStatus())) ... ... without having to reference any constants for the status ID, any magic numbers, etc. However, I can't figure out how to test these conditionals in my Velocity template with VTL. I'd like to just print a simple string based upon the user's status, such as: Welcome <b>${user.name}</b>! <br/> <br/> #if($user.status == com.company.blah.User.Status.USER) You are a regular user #elseif($user.status == com.company.blah.User.Status.ADMIN) You are an administrator #etc... #end But this throws an Exception that looks like org.apache.velocity.exception.ParseErrorException: Encountered "User" at webpages/include/dashboard.inc[line 10, column 21] Was expecting one of: "[" ... From the VTL User Guide, there is no mention of accessing a Java class/static member directly in VTL, it appears that the right hand side (RHS) of a conditional can only be a number literal, string literal, property reference, or method reference. So is there any way that I can access static Java properties/references in a Velocity template? I'm aware that as a workaround, I could embed the status ID or some other identifier as a reference in my controller (this is a web MVC application using Velocity as the View technology), but I strongly do not want to embed any magic numbers or constants in the view layer.

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  • Fast Bookmarking In Firefox

    - by Kije
    Making bookmarks in Firefox has become tedious. Can any one point me to a bookmarking extension that works as follows... Decide you want to bookmark a page Left click your way to the target bookmark folder Right the target bookmark folder to get a "Bookmark this page here" option. (It is this "Bookmark this page here" add on that I am looking for) (Edit the book mark title tags etc) Click done Currently you have to: Decide you want to bookmark a page Click on the bookmarks menu pulldown Click on "bookmark this page" Click on the "folder" pulldown Click on "Bookmarks tool bar" or "Bookmarks menu" Left click your way to the target bookmark folder (in a teeny window that that doesn't move the focus as you expand folders) (Edit the book mark title tags etc) Click "Done" That would be four (or five) steps to replace the seven (or eight) steps to make a bookmark in an existing folder. @Chris I assume you are referring me to "Read It Later" http://www.ideashower.com/ideas/launched/read-it-later/ I'll take a look.

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