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  • Hash Table v/s STL map in C++

    - by anon
    Hi, I am trying to learn C++ maps. Was just wondering about the implementation of STL map. I read it employs Binary search tree. Is there a implementation of hash table in STL? How exactly do STL map stores Key Value pairs?

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  • Grails many to many using a third 'join' class

    - by andy mccullough
    I read that a m:m relationship often means there is a third class that isn't yet required. So I have m:m on User and Project, and I created a third domain class, ProjectMembership The three domains are as follows (minimized for illustration purposes): User class User { String name static hasMany = [projectMemberships : ProjectMembership] } Project Membership class ProjectMembership { static constraints = { } static belongsTo = [user:User, project:Project] } Project: class Project { String name static hasMany = [projectMemberships : ProjectMembership] static constraints = { } } If I have the ID of the user, how can I get a list of Project objects that they are assigned to?

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  • Another void C# question

    - by Jim Jones
    Have a type in the header files I'm working with called VTVOID it is the type of a struct element and a number of parameters. In the header file defining types is the line #define VTVOID void I read in another discussion the void maps to System.Void however when I plug that into the C# code I get the error "System.Void cannot be used in C# -- use typeof(void) to get the void object." So what type do I plug in? Jim

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  • How do I convert a Twitter User ID to a Twitter Username

    - by codyvbrown
    Hi I'm building an app in rails that needs to convert a twitter id into the twitter username. This is the code that pulls the id. url = 'http://twitter.com/' + params[:username] buffer = open(url, 'UserAgent' = 'irb').read @vouched_user_twitter_id = buffer[/\d+(?=.rss)/] How do I use that number to pull the username once i no longer have params. Thanks!

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  • domain -> subdomain - passing session data

    - by Phil Jackson
    Howdy, having a little trouble here. I have domain.co.uk setting a session. When I click on a link on domain.co.uk to go to sub.domain.co.uk the session is not being read. I have altered session.cookie_domain to .domain.co.uk not still not working. Is there anything else that needs changing? Regards, me.

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  • Logic to mirror byte value around 128

    - by Kazar
    Hey, I have a need to mirror a byte's value around the centre of 128. So, example outputs of this function include: In 0 Out 255 In 255 Out 0 In 128 Out 128 In 127 Out 1 In 30 Out 225 In 225 Out 30 I'm driving myself nuts with this, I'm sure I'll kick myself when I read the answers. Cheers

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  • reading half part of a table

    - by eastafri
    When i have a table; 1 0 0 1 0 0 1 0 1 0 0 0 1 0 1 1 1 1 1 0 0 0 0 0 1 Say i want to only read and keep the values along the upper diagonal of this table, how can i easily accomplish this in pure ruby? Such that the final structure looks like 1 0 0 1 0 1 0 1 1 1 0 1 1 0 1 Thanks

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  • Reading a Text file in xcode

    - by Nicolaj Zefting
    First off, I'm a complete beginner. This might be a stupid question, but here it goes: I'm currently working on an App than contains Latin texts that the users can view and read. I'm using Xcode 4 with the storybord function. Theway the app is built: user selects author - then the book - then app shows the text. I am kind of confused because i need to have various text files, depending on the users choice.

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  • Build a road network out of shapefile coordinates

    - by Sameer
    I want to build a road network from the ESRI shapefiles. I am able to read the data from the .shp files but unable to proceed any further with building the road network out of the shapefile coordinates and display it on the screen. I am not that expirienced in Java. I would appreciate any kind of suggestions on how should i proceed now.

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  • CSS Doozie: Replacing BG Image on SELECT dropdown

    - by ToiletOverflow
    I need to be able to change the background-image property of a SELECT drop-down using JavaScript/CSS. We have been able to accomplish this in Firefox, but it doesn't appear to be supported at all in IE. From what I've read, IE won't support this. But I'm wondering if there's anything else I could try. Does anyone here have any recommendations?

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  • Reading doc file using streamreader

    - by Bishal
    I am trying to read .doc/.docx file with stream reader, but it give me output as unspecified character ie. ??[ ?L?f???C???. I'm writing the file using a text editor. Here's a snippet of my code: string filePath = baseUrl+ "Sample.docx"; using (StreamReader reader = new StreamReader(filePath, Encoding.UTF8)) { txtBody.Text = reader.ReadToEnd(); } I'm using VS 2010. Thank you.

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  • Is Form Tag Necessary in AJAX Web Application?

    - by Morgan Cheng
    I read some AJAX-Form tutorial like this. The tag form is used in HTML code. However, I believed that it is not necessary. Since we send HTTP request through XmlHttpRequest, the sent data can be anything, not necessary input in form. So, is there any reason to have form tag in HTML for AJAX application?

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  • Application lifetime in ASP.NET

    - by fearofawhackplanet
    This should be a simple question but I haven't managed to find the answer on google. I would like to know, in terms an idiot can understand, exactly what application lifetime means in ASP.NET (and therefore when you can expect application start and end events to run). I assumed it would be when you run and stop the app in IIS, but I've read things that suggest it's related to number of requests.

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  • How to access key itself using javascript

    - by Wondering
    Hi All, I have a json like: var xx= {'name':'alx','age':12}; now i can read the value of name which is 'alx' as xx[0].name, but how to retrieve value of 'name' itself, means how i can fetch Key @ run time. Please let me know if my question is not clear and you guys want more info. Thanks.

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  • Why can't my function access a variable in an enclosing function?

    - by nailer
    I know about the LEGB rule. But a simple test of whether a function has read access to variables defined in an enclosing function doesn't seem to actually work. Ie: #!/usr/bin/env python2.4 '''Simple test of Python scoping rules''' def myfunction(): print 'Hope this works: '+myvariable def enclosing(): myvariable = 'ooh this worked' myfunction() if __name__ == '__main__': enclosing() Returns: NameError: global name 'myvariable' is not defined Am I doing something wrong? Is there more to it than the LEGB resolution order?

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  • Is or Are to prefix boolean values

    - by Brian T
    When naming a boolean, or a function returning a boolean it's usual to prefix with 'is' e.g. isPointerNull isShapeSquare What about when refering to multiple items, should it be: arePointersNull or isPointersNull areShapesNull or isShapesNull I can see arguments for both; is offers consistency and perhaps slightly better readability, are makes the code read in a more natural way. Any opinions?

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  • Encrypted HTML page without HTTPS

    - by Tichomir Mitkov
    I have a Perl script to open this page http://svejo.net/popular/all/new/ and filter the names of the posts but except headers everything seems encrypted. Nothing can be read. When I open the same page in a browser everything looks fine including the source code. How is it possible to encrypt a page for a script and not for a browser? My Perl script sends the same headers as my browser (Google Chrome).

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  • Make error: target pattern contains no '%'. Stop.

    - by Derek
    Hi all. I have a project that I have been running on IRIX that builds fine with gmake. I copied the source and make files onto a Redhat machine, and running gmake gives me the error posted in the subject. This is during a part of the make that is building .d dependency files, and they are separated by a colon, which I have read is a no-no, but why does it work on one system and not the other? What is the fix? Thanks

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