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  • C#: How to find the default value for a run-time Type?

    - by George Mauer
    So given a static type in your code you can do var defaultMyTypeVal = default(MyType); How would you do the same thing given a variable of Type so you can use it during runtime? In other words how do I implement the following method without a bunch of if statements or using Generics (because I will not know the type I'm passing into the method at compile time)? public object GetDefaultValueForType(Type type) { .... }

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  • grails: quering in a composite structure

    - by Asaf David
    hey i have the following domain model: class Location { String name static hasMany = [locations:Location, persons:Person] } class Person { String name } so basically each location can hold a bunch of people + "sub-locations". what is the best way to recursively query for all persons under a location (including it's sub locations, and their sub locations, etc')?

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  • Windows [C++] - Creating new folders if they don't exist for fopen

    - by Gbps
    I have a C++ program that takes user input for fopen in order to initiate a file write. Could someone help me find a function which will return a FILE* and use the Windows specific version of mkdir in order to create the folder structure for fopen to never fail to open a new file in the specified location because one of the folders does not exist. Thanks a bunch!

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  • TSql Lookup function

    - by OldMan
    I have a bunch of dimension tables that have unique ID and Name fields. I need a T-SQL function that returns an ID when passed a table name and a value for the name field. I'm guessing the query would build a little query then execute it? Performance isn't an issue since this is a one time ETL thing.

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  • Language parsers

    - by prosseek
    I need to parse C#, Ruby and Python source code to generate some reports. I need to get a list of method names inside a class. What parsers for those languages are provided? For C#, I found http://csparser.codeplex.com/Wikipage , but for the others, I found a bunch of parsers using those languages, but not the language parsers of them.

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  • C++[MSVC2010]: How does switch compile and how optimized and fast is it?

    - by ekul
    As I found out that I can use only numerical values in C++'s switch statements, I thought that there then must be some deeper difference between it and a bunch of if-else's. Therefore I asked myself: (How) does switch differ from if-elseif-elseif in terms of runtime speed, compile time optimization and general compilation? I'm mainly speaking of MSVC here.

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  • Using wget via Python

    - by CoreIs
    How would I download files (video) with Python using wget and save them locally? There will be a bunch of files, so how do I know that one file is downloaded so as to automatically start downloding another one? Thanks.

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  • Removing part of a string in PHP

    - by Nik
    I'm trying to take a query: SHOW TABLES; which will display a bunch of tables with the chat_ prefix. I want to remove the chat_ prefix from the string, format the variable (with a link), and display it. How is this accomplished?

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  • Making a screensaver

    - by user1718744
    No, I'm not talking about making a slideshow of pictures. How can I make the actual file that windows (at least windows 7) uses for screensavers? It is a .scr format, and when I opened it in Notepad, I got a bunch of symbols, with a few words scattered throughout, but that was expected. It looks like it was made with directx, xml, and even assembly (for the shaders) based on the recognizable code there. I just went on to a site-hosting place and made this: Link to ribbons.scr code

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  • How to match a variable list of items separated by commas

    - by user261915
    I want to turn something like this CS 240, CS 246, ECE 222, ... (more or less); Software Engineering students only into ('CS 240', 'CS 246', 'ECE 222', 'ECE 220') in Python, code that matches a single course looks like >>> re.search('([A-Z]{2,5} \d{3})', 'SE 112').groups() ('SE 112',) I prefer a regular expression only method because I have a bunch of other alternate reg exps using '|' to combine them. However, a method with split is acceptable.

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  • Does Math.Sqrt cache its own results?

    - by Jonathan Beerhalter
    Someone has suggested to me that the built in C# Math.Sqrt function in .NET 4.0 caches its results, so that if I call Math.Sqrt(50) over and over again, it's not actually doing a sqrt, but just pulling the answer from a cache. Can anyone verify or deny this claim? If it's true then I have a bunch of needless caching going on in my code.

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  • Describing Types question

    - by user288245
    I have a bunch of types (eg. LargePlane, SmallPlane) that could be in this collection i've made, how do i print like LargePlane? I've tried like typeOf() and stuff but it doesn't work. Within like a toString()? So when i output the collection it states what type it is.

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  • Listing C Constants/Macros

    - by ZJR
    Is there a way to make the GNU C Preprocessor, cpp (or some other tool) list all available macros and their values at a given point in a C file? I'm looking for system-specific macros while porting a program that's already unix savvy and loading a sparse bunch of unix system files. Just wondering if there's an easier way than going hunting for definitions.

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  • Enable proper relative path in cron

    - by Webnet
    I have 2 servers that are on completely separate OS' and configurations. One properly accepts require_once '../file.php'; and the other doesn't, because it's relative to where the cron is loading I guess. How can I fix the 2nd location so that it's relative path is from the relative path of the file. I need this to work in 3 different environments (local, beta, and live) so I don't want to write a bunch of code on this page, I'd prefer a configuration adjustment if possible.

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  • How is <tgmath.h> implemented?

    - by sync
    C doesn't have (to the best of my knowledge) overloading or templates, right? So how can a set of type-agnostic functions with the same name exist in plain ol' C? The usual compile-time trickery would involve a whole bunch of macros, wouldn't it?

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  • Best way to secure a file.

    - by JACK IN THE CRACK
    Basically I need to like IDK encrypt a .zip file with some images and documents etc. Like it doesn't need to be .zip tho, just how can I encrypt a bunch of files with like a password or something. I NEED tHE ULTIMATE UNCRACKED PROTECTION. Now I'm a hacker, I know that anything can be hacked given enough time and effort. But I'm looking for top of the line....

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  • 64 bit enum in C++?

    - by Rob
    Is there a way to have a 64 bit enum in C++? Whilst refactoring some code I came across bunch of #defines which would be better as an enum, but being greater than 32 bit causes the compiler to error. For some reason I thought the following might work: enum MY_ENUM : unsigned __int64 { LARGE_VALUE = 0x1000000000000000, };

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  • PHP Redirect after execution of code

    - by UmYeah
    I have a php page that takes in a bunch of url parameters and sends out an email. I am trying to have this page call another web page using the same url parameters, after the mail is sent. If I do the following, will my email be sent reliably? Is a redirect what I really want to do? Random code to send email... header('Location: http://www.othersite.com/' + $_SERVER["REQUEST_URI"]);

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  • C++, Qt - How do I get rid of dll dependencies?

    - by HardCoder1986
    Hello! I have compiled my Qt application and now have the following question - now my built project requires QtCore4.dll and QtGui4.dll to be located at the same folder where the .exe file is. (I built my project using MSVS2008 with Qt addon) Q: Is there any way to combine my final application with these .dll files so that they make one large .exe-file? (I simply don't want to have another bunch of dll files with my release - app) Thank you.

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