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• WPF Toolkit Datagrid - Can I call a function in view-model, on selection of a row ?

  - by Anish

  Hi, I have a WPf Toolkit-datagrid..in my application which follows MVVM pattern. How I can call a function in view-model if user selects a particular row in datagrid ?

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• Does anyone follow the Microsoft Connected Health and Human Services Model?

  - by Toran Billups

  I have a team lead who is pushing to follow the Microsoft Connected Health and Human Services Model, does anyone have experience with this approach? Any suggestions/etc?

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• Will the memory rise if I loads a same URL for 1000 times in Adobe AIR?

  - by Yinan

  Hi, Here is the case: I have created a test application which simply loops to load a same url for 1000 times by using HTMLLoader class from Adobe AIR. What I found is that the memory of this app keeps rising. So is this expected? I mean it's the same URL although it get loaded for 1000 times. Does the AVM create 1000 objects behind the scene?

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• how to execute Sql Raw Query in Microsoft Entity Model Framework.

  - by kamal

  Hi I'm using Microsoft Entity model framework to access my database. I get an issue while i use this execute query command for executing Sql raw query. Let me know how could i resolve it. svdc.CreateQuery("select * from videomastertable WHERE FREETEXT(*, '"+keyword+"')").ToList(); Thanks in Advance, Kanal

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• Is there a memory efficient and fast way to load big json files in python?

  - by user210481

  I have some json files with 500MB. If I use the "trivial" json.load to load its content all at once, it will consume a lot of memory. Is there a way to read partially the file? If it was a text, line delimited file, I would be able to iterate over the lines. I am looking for analogy to it. Any suggestions? Thanks

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• Any way to reserve but not commit memory in linux?

  - by Eloff

  Windows has VirtualAlloc, which allows you to reserve a contiguous region of address space, but not actually use any physical memory. Later when you want to use it (or part of it) you call VirtualAlloc again to commit the region of previously reserved pages. This is actually really useful, but I want to eventually port my application to linux - so I don't want to use it if I can't port it later. Does linux have a way to do this?

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• How do I make all the finders on the model ignorecase?

  - by Glex

  I have a model with several attributes, among them title and artist. The case of title and artist should be ignored in all the Active Record finders. Basically, if title or artist are present in the :conditions (or dynamically i.e. find_all_by_artist), then the WHERE artist = :artist should become WHERE UPPER(artist) = UPPER(:artist) or something along these lines. Is there a way of doing it with Rails?

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• Is Cassandra database row size limited by available memory?

  - by Adam Hollidge

  I'm working with very long time series -- hundreds of millions of data points in one series -- and am considering Cassandra as a data store. In this question, one of the Cassandra committers (the über helpful jbellis) says that Cassandra rows can be very large, and that column slicing operations are faster than row slices, hence my question: Is the row size still limited by available memory?

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• how to generate JMX MXBean compatible java class model from JAXB?

  - by yucubby

  From the JMX MXBean specification, a java class type J must satisfy Either if J has at least one public constructor with a ConstructorProperties annotation, Or if J has a public no-arg constructor, and for every getter in J with type T and name N there is a corresponding setter with the same name and type So how can I use JAXB to generate JAVA class model which satisfy the MXBean constrain? Thanks YU

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• nonatomic property in model class when using NSOperationQueue (iPhone)?

  - by Andrew B.

  I have a custom model class with an NSMutableData ivar that will be accessed by custom NSOperation subclasses (using an NSOperationQueue). I think I can guarantee thread-safe access to the ivar from multiple NSOperations by using dependencies, and I can guarantee that I don't access the ivar from other code (say my main app thread) by waiting until the Q has finished all operations. Should I use a nonatomic property specification, or leave it atomic? Is there a significant impact on performance?

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• Help with saving or adding more than 4000 words to a list in memory in C#.net

  - by Jepe d Hepe

  I need help with my application where i save a bunch of words like more than 4000 words or more in a List<[class name]. My problem is, as the number of words increases, the process in saving it in the list seems to go slower and the application uses a lot more of memory. Can you give me an advise or alternative to do this without affecting the speed of the process?

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• How do I dynamically allocate memory for arrays in Qt C++ ?

  - by Ahmad

  I'm having some issues in allocating memory for an array dynamically in C++ within Qt SDK ... Here's for I'm doing: int dx = 5; QPoint * qPoint; qPoint = new QPoint[dx+1]; However when I try to debug the code, the programs just crashes when it tries to execute the third line .... any clues ?

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• When would I want to model a class with a private ctor?

  - by dotnetdev

  Hi, I've seen plenty of classes in .NET which have private constructor (Stream is one of them I think). When would I want to model a class like this? I keep thinking that if my class has no internal state/fields, then I can make it have a private constructor. Am I on the right track with this idea? I can understand the use of a factory (I've run into the tipping point a few times), but not with a private constructor class. Thanks

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• what is mean by "memory is 8 bytes aligned"?

  - by Renjith G

  hi , while going through one project , i have seen that the memory data is "8 bytes aligned" Can anyone please give some input related to this ? /Kanu__

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• What is the best way to estimate how much memory a row will require?

  - by Ryan Elkins

  I'm working on a project that will have a single table holding lots and lots of rows on either a SQL Server or SQL Azure installation. I'm trying to estimate how many rows I can store per GB. Is it a matter of simply adding up the memory size of the individual column data types? Is there other overhead to consider?

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• How to have that file system in the flash memory itself?

  - by sagar

  Hi, we are doing a flash boot, with an NFS driver from a host machine mapped as the root directory. How to have that file system in the flash (flash memory ) itself in linux environment ?

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• Is there anyway an app can use more than 16mb in memory?

  - by Sarevok

  I understand most Android devices have a 16mb limit (24mb on Nexus One) on the Java heap size. Is there any way a single app can use more memory than that? I know the native SDK doesn't have this limitation but I'd like to stick with Java.

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• Is it possible to profile CPU / memory inside an Adobe AIR application?

  - by dain

  Couldn`t find any ActionScript native APIs even in the beta documentation, am I right supposing that this means the only way to measure CPU / memory consumption is by cooking up a custom native solution, hooking it up with AIR and making it work on each targeted platform? Basically the aim is to be able to have this information available inside AIR and not having to use an external application for profiling, not even Flex / Flash builder.

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• Why do you need this method inside a Django model ?

  - by alex

  Class mytable(models.Model): abc = ... xyz = ... def __unicode__(self): Why is the "def Unicode" necessary?

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• C#. Where struct methods code kept in memory?

  - by maxima120

  It is somewhat known where .NET keeps value types in memory (mostly in stack but could be in heap in certain circumstances etc)... My question is - where is the code of the struct? If I have say 16 byte of data fields in the struct and a massive computation method in it - I am presuming that 16 byte will be copied in stack and the method code is stored somewhere else and is shared for all instances of the struct. Are these presumptions correct?

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• Rails: ruby script/generate model, where are the docs?

  - by yar

  I am running ruby script/generate scaffold or ruby script/generate model and I know the basic syntax, like ruby script/generate scaffold Dude name:string face:boolean but I do not know things like: should names of variables have underscores or be camelCased? what kind of variable types are acceptable? Where can I find such information? THANKS! P.S. The answers to my two questions would help for now, too :)

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• when using Automapper, Should I flatten/map my internal objetcs of the View Model also ?

  - by Mahesh Velaga

  Hi all, I am using AutoMapper in my project along with, NHibernate and ASP.NET MVC 2. As the title states, if I have a list of DTOs or a DTO inside the parent DTO that I am mapping to the View Model, should I flatten out the inner DTOs as well ? Thanks

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• How to cache *any* object type to memory/disk in java?

  - by Blankman

  Is there a generic way to cache any type of object (be in a java class, or a word document etc.) to memory or disk? Is simply serializing the object, and retaining the file extension (if it has one) enough to rebuild the object?

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• What's the memory overhead for a single windows threads?

  - by DayOne

  Is it 1 Mb of stack per thread? Or is that just CLR threads? I want to know the memory over head of native windows threads (c++) and CLR threads as view via Task Manager. Thanks

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• HOW TO MAKE A USB PEN DRIVE, MEMORY CARD OR HARD DRIVE VIRUS REMOVER AND CLEANER IN C++?

  Do you Know HOW TO MAKE A USB PEN DRIVE, MEMORY CARD OR HARD DRIVE VIRUS REMOVER AND CLEANER IN C++? Check out this link http://snipurl.com/w4361

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