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  • Where can I learn the ins and outs of enumerators in C#?

    - by SLC
    Is there a good resource out there that explains the concept of enumerators and custom enumerators? Particularly one with a good solid example of why you would want to implement IEnumerable yourself and how you would use it effectively? I occasionally come across yield and I am trying to get a better understanding of it.

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  • Learning the Introspection API (used by FxCop)

    - by Anand Patel
    Microsoft's FxCop tool uses the introspection API. This introspection API could be used to develop new code analysis tools. But the introspection api is not documented well. Additionally, I was not able to figure out any blogs which explains this API in breadth and depth of it. The knowledge gained by understanding the API can also be used for writing custom FxCop rules. Does anybody knows about any blog or resources which explains the same?

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  • Deep diving into open source code

    - by Raspar
    When do you feel that it's appropriate/necessary to take deeper dives into the source code of open source tools to gain an understanding of the toolsets that you use? (nHibernate, StructureMap, Rhino Mocks, etc.)

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  • Is Programming or web designing a site harder? [closed]

    - by ggfan
    Given that someone has almost an equal understanding of coding(java, php, etc) and web designing(css, xml, photoshop) and wants to create a functional site. Which generally would be more time-consuming. There is obviously lots of considerations...but in general Just curious, because i am learning everything from books and now putting coding and design into practice and the css is kicking my *.

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  • In Objective C, is there a way to call reference a typdef enum from another class?

    - by Adrian Harris Crowne
    It is my understanding that typedef enums are globally scoped, but if I created an enum outside of the @interface of RandomViewController.h, I can't figure out how to access it from OtherViewController.m. Is there a way to do this? So... "RandomViewController.h" #import <UIKit/UIKit.h> typedef enum { EnumOne, EnumTwo }EnumType; @interface RandomViewController : UIViewController { } and then... "OtherViewController.m" -(void) checkArray{ BOOL inArray = [randomViewController checkArray:(EnumType)EnumOne]; }

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  • How does PHP work - literature

    - by Ondrej Slinták
    I'm interested in literature (articles on internet, in magazines, books, podcasts - I don't really mind anything) that describes how PHP works internally, about its gotchas and perhaps some advanced functions. Is there anything like this out there? I tried to search on Google, but majority of articles were about starting with PHP and its basic functions. Any input is really welcome as I'm trying to understand the language internally - I'm tired of my mindless typing of code without understanding its essence.

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  • XML security in world wide web

    - by nikky
    Hi, Im a newbie in XML and i have some questions Can XML be used in stead of normal database (store data in a tuple and column) in website? XML is built to share information easier (from my understanding) such as can share cross platform and in different language used so Is it secure to store secure data in XML? thank you so much

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  • Own CMS or Blog

    - by Xander cage
    I'm trying t build a somekind a clone to wordpress and have some problems understanding the functions that are used there. But that's not the problem.. The thing I'm looking for is good book that detailed explains what aspects to be aware of during the creation of the cms and some code snippets or something in that direction.. With best regards

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  • BigInteger.pow(BigInteger) ?

    - by PeterW
    I'm playing with numbers in Java, and want to see how big a number I can make. It is my understanding that BigInteger can hold a number of infinite size, so long as my computer has enough Memory to hold such a number, correct? My problem is that BigInteger.pow accepts only an int, not another BigInteger, which means I can only use a number up to 2,147,483,647 as the exponent. Is it possible to use the BigInteger class as such? BigInteger.pow(BigInteger) Thanks.

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  • Why we need to read() before write() in TCP server program?

    - by Naga
    Hi, As per my understanding a simple TCP server will be coded as follows. socket() - bind() - listen() - accept() - read() - write() The clients will be written as follows. socket() - bind()(Optional) - connect() - write() - read() Please note the order difference in read() and write() calls between client and server program. Is it a requirement to always read() before write() in a server program and if, then why? Thanks, Naga

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  • Oracle Database Enforce CHECK on multiple tables

    - by GigaPr
    I am trying to enforce a CHECK Constraint in a ORACLE Database on multiple tables CREATE TABLE RollingStocks ( Id NUMBER, Name Varchar2(80) NOT NULL, RollingStockCategoryId NUMBER NOT NULL, CONSTRAINT Pk_RollingStocks Primary Key (Id), CONSTRAINT Check_RollingStocks_CategoryId CHECK ((RollingStockCategoryId IN (SELECT Id FROM FreightWagonTypes)) OR (RollingStockCategoryId IN (SELECT Id FROM LocomotiveClasses))) ); ...but i get the following error: *Cause: Subquery is not allowed here in the statement. *Action: Remove the subquery from the statement. Can you help me understanding what is the problem or how to achieve the same result?

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  • What is call out table in unix?

    - by Supereme
    Hi, Can anybody tell me the 'call out table' in unix? The explanation is given in 'Maurice J. Bach' book but I'm getting difficulty in understanding the example especially, the one explaining the reason of negative time out fields. For what purpose the software interrupts are used there? Thanks!

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  • R or Python for file manipulation

    - by danspants
    I have 4 reasonably complex r scripts that are used to manipulate csv and xml files. These were created by another department where they work exclusively in r. My understanding is that while r is very fast when dealing with data, it's not really optimised for file manipulation. Can I expect to get significant speed increases by converting these scripts to python? Or is this something of a waste of time?

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  • Java - JPA - @Basic and @Embedded

    - by Yatendra Goel
    I am learning JPA from this tutorial. I have some confusions in understanding the following annotations: @Basic @Embedded Fields of an embeddable type default to persistent, as if annotated with @Embedded. If the fields of embeddable types defualt to persistent, then why would we need @Embedded

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  • Using Ruby/Python code in an iPhone OS app?

    - by igul222
    My app needs to use a library which is only available for Python and Ruby. From my understanding, Apple allows Ruby to run on iPhone as long as users can't execute arbitrary code (Rhomobile uses Ruby). How can I bundle Ruby/Python with my app, call a function from my Obj-C code, and get the result (a string) back in C or Obj-C format?

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  • hibernate for dynamic table creation

    - by user369316
    i AM A HIBERNATE BEGINNER ,Since i need to create dynamic tables with dynamic fields in them i chose to use hibernate . As far as my understanding , creating tables requires a class with the fields defined in the class . How do i generate the classes dynamically based on the table with the required fields ?

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  • Linux service and Source for cron job

    - by Sirish Kumar
    Hi, I am new to linux and writing a service in C++ which spawns multiple threads and I am starting the service by calling it from init.d, but how should I send the terminate signal to my application from the script , so that my service terminates all the threads and exits. And also where can I find the source code for any linux services. e.g. /etc.init.d/rc5.d/S14cron . It will be helpful in understanding how to implement a service.

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  • Commercial Java LIB / API to read and write Word 2007 docs

    - by AlfaTeK
    I need a simple to use / good docs / good support java lib to read and write word documents, namely word 2007 support (and word 2010 support planned). As the project I'm in has budget and time-constraints I don't mind buying a commercial lib :) I know they are XML files in a somewhat open format but I really don't want to waste time understanding the XML specification. Any good recommendations from happy customers? (Right now my choice is going to Aspose.Words for Java)

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  • git filter-branch chmod

    - by Evan Purkhiser
    I accidental had my umask set incorrectly for the past few months and somehow didn't notice. One of my git repositories has many files marked as executable that should be just 644. This repo has one main master branch, and about 4 private feature branches (that I keep rebased on top of the master). I've corrected the files in my master branch by running find -type f -exec chmod 644 {} \; and committing the changes. I then rebased my feature branches onto master. The problem is there are newly created files in the feature branches that are only in that branch, so they weren't corrected by my massive chmod commit. I didn't want to create a new commit for each feature branch that does the same thing as the commit I made on master. So I decided it would be best to go back through to each commit where a file was made and set the permissions. This is what I tried: git filter-branch -f --tree-filter 'chmod 644 `git show --diff-filter=ACR --pretty="format:" --name-only $GIT_COMMIT`; git add .' master.. It looked like this worked, but upon further inspection I noticed that the every commit after a commit containing a new file with the proper permissions of 644 would actually revert the change with something like: diff --git a b old mode 100644 new mode 100755 I can't for the life of me figure out why this is happening. I think I must be mis-understanding how git filter-branch works. My Solution I've managed to fix my problem using this command: git filter-branch -f --tree-filter 'FILES="$FILES "`git show --diff-filter=ACMR --pretty="format:" --name-only $GIT_COMMIT`; chmod 644 $FILES; true' development.. I keep adding onto the FILES variable to ensure that in each commit any file created at some point has the proper mode. However, I'm still not sure I really understand why git tracks the file mode for each commit. I had though that since I had fixed the mode of the file when it was first created that it would stay that mode unless one of my other commits explicit changed it to something else. That did not appear to the be the case. The reason I thought that this would work is from my understanding of rebase. If I go back to HEAD~5 and change a line of code, that change is propagated through, it doesn't just get changed back in HEAD~4.

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