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  • Is there a straightforward way to have a thread-local instance variable?

    - by Dan Tao
    With the ThreadStatic attribute I can have a static member of a class with one instance of the object per thread. This is really handy for achieving thread safety using types of objects that don't guarantee thread-safe instance methods (e.g., System.Random). It only works for static members, though. Is there any straightforward way to declare a class member as thread-local, meaning, each class instance gets an object per thread?

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  • SQL - when should you use "with (nolock)"

    - by Andy White
    Can someone explain the implications of using "with (nolock)" on queries, when you should/shouldn't use it? For example, if you have a banking application with high transaction rates and a lot of data in certain tables, in what types of queries would nolock be okay? Are there cases when you should always use it/never use it?

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  • check if sqlserver is installed on a machine thro C#

    - by Skun
    Hey ! I am making an application which is a user interface to access 2 types of databases - SQLite and MSSQL server. The thing is, SQLite doesnt need to be "installed" since its just a flatfile database, but on the other hand, SQLserver (Express/normal) need to be installed before use. My Question is simple: Is there a way by which i can find out if an instance of SQLserver has been installed on the local machine by using a C# program?

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  • How do I debug a Unity Container "Resolve"?

    - by willem
    I'm using the MS Unity container to do dependency injection, but a "Resolve" is returning unexpected results. Is there an way I can debug this resolution? It would be great if I could view what Types/Instances are registered in the container, but I can't see where this is stored when using QuickWatch. It would also be useful if I could get the container to output some debug Traces. Any suggestions?

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  • Is there a straightforward way to have a ThreadStatic instance member?

    - by Dan Tao
    With the ThreadStatic attribute I can have a static member of a class with one instance of the object per thread. This is really handy for achieving thread safety using types of objects that don't guarantee thread-safe instance methods (e.g., System.Random). It only works for static members, though. Is there some corresponding attribute that provides the same functionality, but for instance members? In other words, that allows me to have one instance of the object, per thread, per instance of the containing class?

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  • Formatting dates when serialising an object in C# (2.0)

    - by zoman
    Hi, I'm xml-serializing a object with a large number of properties and I have two properties with DateTime types. I'd like to format the dates for the serialized output. I don't really want to implement the ISerializable interface and overwrite the serialization for every property. Is there any other way to achieve this? (I'm using C#, .NET 2) Thanks.

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  • Cannot connect to domain despite successful pings

    - by egtann
    Pings to my domain name work, but I can't connect via http. I've been trying various methods for a week now, but haven't come up with anything that worked. Any idea what's causing this? /etc/apache2/httpd.conf ServerName machinename.local <VirtualHost *:80> ServerName chipperapp.com DocumentRoot "/Users/myusername/appname/public" <Directory "/Users/myusername/appname/public"> AllowOverride all Options -MultiViews </Directory> </VirtualHost> /etc/hosts 127.0.0.1 chipperapp.com I can access the app from my local machine, but not on any other. I've set up dynamic DNS. Thanks!

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  • Filesize checks for integrity checks

    - by atwellpub
    Hey I'm wanting to have an integrity check on a software that will be distributed to many different types of servers. Can I use PHP's filesize() comparisons safely... for example will a filesize that is 745 on my server be 745 across all other servers?

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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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  • Wordpress Custom Post Type adding tags

    - by Nick White
    I am currently working on a Wordpress site I have created some custom Post Types all work fine create the post etc. What I need however is custom taxonomies with some of the custom Post Types, I have set this up and when adding different tags to the taxonomy it works however, when creating a post for a custom post type in the taxonomy block clicking add tag it just does a anchor link to #Member news Category-add Nothing else happens, it's not a big bug but I would however, like to fix this so it is correct for the time I go live Is this a known bug? or is there something I have probably missed when creating the custom post type? register_post_type('member_news', array( 'label' => 'Member News','description' => 'News content submitted by members of RRUKA.','public' => true,'show_ui' => true,'show_in_menu' => true,'capability_type' => 'post','hierarchical' => false,'rewrite' => array('slug' => 'member-news'),'query_var' => true,'has_archive' => true,'exclude_from_search' => false,'menu_position' => 5,'supports' => array('title','editor','excerpt','trackbacks','revisions','thumbnail','author','page-attributes',),'labels' => array ( 'name' => 'Member News', 'singular_name' => 'Member News', 'menu_name' => 'Member News', 'add_new' => 'Add Member News', 'add_new_item' => 'Add New Member News', 'edit' => 'Edit', 'edit_item' => 'Edit Member News', 'new_item' => 'New Member News', 'view' => 'View Member News', 'view_item' => 'View Member News', 'search_items' => 'Search Member News', 'not_found' => 'No Member News Found', 'not_found_in_trash' => 'No Member News Found in Trash', 'parent' => 'Parent Member News', ),) ); Any information on this would be very welcome Thanks in advanced

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  • Incompatible pointer type

    - by Boffin
    Hello. I have the function with following signature: void box_sort(int**, int, int) and variable of following type: int boxes[MAX_BOXES][MAX_DIMENSIONALITY+1] When I am calling the function box_sort(boxes, a, b) GCC gives me two warnings: 103.c:79: warning: passing argument 1 of ‘box_sort’ from incompatible pointer type (string where i am calling the function) 103.c:42: note: expected ‘int **’ but argument is of type ‘int (*)[11] (string where the function is defined) The question is why? Whether int x[][] and int** x (and actually int* x[]) are not the same types in C?

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  • Overloading with same parameter signature

    - by Soham
    In C#, is it possible to have same parameters yet override each other(they are different in the return types) public override Stocks[] Search(string Field,string Param){ //some code} public override Stocks Search(string Field, string Param){//some code} C# returns compilation error

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  • Implementing prototypes OR instantiating class objects

    - by intuited
    I'm wondering how to implement prototypal inheritance in Python. It seems like the way to do this would be to either use a metaclass to cause instantiations to actually be classes, rather than objects, or use some magical powers to transform an existing object into a class. The second method would seem to be more flexible, in that it could be applied to existing objects of varied types, while the first would likely be more convenient for typical use cases. Insights on the practicality of these two approaches, as well as alternative suggestions, are hereby requested.

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  • How do I override file.write() under Python 3?

    - by Sorin Sbarnea
    Below works on Python 2.6 but on Python 3.x it doesn't: old_file_write = file.write class file(): def write(self, d): if isinstance(d, types.bytes): self.buffer.write(d) else: old_file_write(d) # ... do something like f = open("x") f.write("...") The problems is that with Python 3.x the first like will generate an error: NameError: name 'file' is not defined How can I make this work on Python 3.x? PS. In fact I'm looking for a solution that will work on both versions.

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  • Should the argument be passed by reference in this .net example?

    - by Hamish Grubijan
    I have used Java, C++, .Net. (in that order). When asked about by-value vs. by-ref on interviews, I have always done well on that question ... perhaps because nobody went in-depth on it. Now I know that I do not see the whole picture. I was looking at this section of code written by someone else: XmlDocument doc = new XmlDocument(); AppendX(doc); // Real name of the function is different AppendY(doc); // ditto When I saw this code, I thought: wait a minute, should not I use a ref in front of doc variable (and modify AppendX/Y accordingly? it works as written, but made me question whether I actually understand the ref keyword in C#. As I thought about this more, I recalled early Java days (college intro language). A friend of mine looked at some code I have written and he had a mental block - he kept asking me which things are passed in by reference and when by value. My ignorant response was something like: Dude, there is only one kind of arg passing in Java and I forgot which one it is :). Chill, do not over-think and just code. Java still does not have a ref does it? Yet, Java hackers seem to be productive. Anyhow, coding in C++ exposed me to this whole by reference business, and now I am confused. Should ref be used in the example above? I am guessing that when ref is applied to value types: primitives, enums, structures (is there anything else in this list?) it makes a big difference. And ... when applied to objects it does not because it is all by reference. If things were so simple, then why would not the compiler restrict the usage of ref keyword to a subset of types. When it comes to objects, does ref serve as a comment sort of? Well, I do remember that there can be problems with null and ref is also useful for initializing multiple elements within a method (since you cannot return multiple things with the same easy as you would do in Python). Thanks.

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  • Is there a way to create a WCF DataContract on a third party type?

    - by Michael Hedgpeth
    I am migrating to wcf and trying to figure out how I'm going to declare my Data Contracts properly. Some of the types I have been demoting are from a third party that I am unable to change. Are attributes the only way to explicitly declare data contracts in wcf? I know about the auto data contract functionality in 3.5, but the books I'm readin discourage that. And besides, that way assumes all state is publically available, which is oftentimes not the case.

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  • What are the standard practices for throwing Javascript Exceptions?

    - by T.R.
    w3schools says that exceptions can be strings, integers, booleans, or objects, but the example given doesn't strike me as good practice, since exception type checking is done through string comparison. Is this the preferred method of exception handling in Javascript? Are there built-in exception types (like NullPointerException)? (if so, what are they, what kind of inheritance do they use, and are they preferred over other options?)

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  • dynamically scale images in php jpg/png/gif

    - by Patrick
    Is there a simple way of dynamically scaling an image in php? Id like to specifically use some kind of function where i can insert it into my heml such as <img src=image.php?img=boss.jpg&width=500> and of course it would then scale the image to whatever height constrains it to 500px wide i appreciate all input, thanks. EDIT does need to include jpg png and gif file types

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  • Font sizes in Telerik controls

    - by Young Ninja
    What's the easiest way to set the font sizes for ALL telerik control to a single value? I believe you can control fonts by modifying the CC of a specific control, but that's a pain because I am using many different control types...

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  • How to test chrome extensions?

    - by swampsjohn
    Is there a good way to do this? I'm writing an extension that interacts with a website as a content script and saves data using localstorage. Are there any tools, frameworks, etc. that I can use to test this behavior? I realize there are some generic tools for testing javascript, but are those sufficiently power to test an extension? Unit testing is most important, but I'm also interested in other types of testing (such as integration testing).

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  • URL structure preference - to slash or not to slash?

    - by TheDeadMedic
    I'm using custom post types in WordPress 3.0 to manage 'courses' (or seminars, lectures, whatever term you'd prefer to have in mind). Now for viewing a single 'course', the url structure is; /course/course-name/ But for multiple courses? /courses/category/category-name/ Or... /course-category/category-name/ Or something entirely different?

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