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• Calculating volume for sphere in c++

  - by Crystal

  This is probably an easy one, but is the right way to calculate volume for a sphere in c++. My getArea() seems to be right, but when I call getVolume() it doesn't output the right amount. With a sphere of radius = 1, it gives me the answer of pi, which is incorrect: double Sphere::getArea() const { return 4 * Shape::pi * pow(getZ(), 2); } double Sphere::getVolume() const { return (4 / 3) * Shape::pi * pow(getZ(), 3); }

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• How can I check if a powershell script is signed from the managed API?

  - by James Berry

  I want to execute a powershell using the .net Powershell SDK. I have this working fine. Before I execute it I want to check that the script has been signed by my code signing certificate - this is easy enough to do from within powershell itself using Get-AuthenticodeSignature but I would like to do this in code before choosing to execute this script.

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• ActiveRecord finding from inside a serialized field

  - by JP

  While working with ActiveRecord I have a table which stores a serialized array of participant usernames for each row. Is there an easy way to search for all rows who contain a specific user? I realise I could just make a new linked table for the participants, but I feel like that would increase my overhead unnecessarily -- what do you think?

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• PHP: Object Oriented Programming -> Operator

  - by oman9589

  So I've been reading through the book PHP Solutions, Dynamic Web Design Made Easy by David Powers. I read through the short section on Object Oriented PHP, and I am having a hard time grasping the idea of the - operator. Can anyone try to give me a solid explanation on the - operator in OOP PHP? Example: $westcost = new DateTimeZone('America/Los_Angeles'); $now->setTimezone($westcoast); Also,a more general example: $someObject->propertyName Thanks

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• ASP.net Ajax Timeout

  - by Moksha

  Hi, I am stuck with count down in ajax, I have a small website where I ask each user 5 question in 1 min time, after they login using asp.net membership provider. I want when the user time is over he/she must be taken to result page and show the result, I am using asp.net ajax timer, but if the user press F5 his time start again and by pressing F5 he can continue his test. how can I stop that. also is there a easy way to show countdown using Ajax for 60sec Regards Arshad

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• CFPreferences for another (or all) users

  - by James Turner

  I'm working on a background service which needs to ask several users' iTunes settings (the users will opt-in via a helper application which they run from their login). Is there an easy way to read the preferences for another user, than the current one, using CFPreferences? The docs, for example for CFPreferencesCopyValue, explicitly state: 'Do not use arbitrary user and host names, instead pass the pre-defined domain qualifier constants.', when passing the 'userName' argument to the various functions.

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• Generate Numbers and Select in memory

  - by Jasl

  I want to do the following dynamically Generate numbers from 1 to 100 and then select 25 random numbers from it and display it in a console. Any easy way to do so?

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• How do I integrate a BSDF into a ray caster.

  - by pelb

  I'm trying to implement sub surface scattering at isosurfaces and looked up how a BSDF works mathematically. Implementing the reflective and diffuse part seems to be quite easy as i just have to evaluate phong at the isosurface intersection, but how do you I apply the transmissive part of the BSDF? In what way do i have to modify the ray direction. Any pointers to a practical implementation are welcome. Thanks and So long!

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• Java: JPQL search -similar- strings

  - by bguiz

  What methods are there to get JPQL to match similar strings? By similar I mean: Contains: search string is found within the string of the matches entity Case-insensitive Small mispellings: e.g. "arow" matches "arrow" I suspect the first two will be easy, however, I would appreciate help with the last one Thank you

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• How do I calculate the size of an entity stored in Google App Engine?

  - by ryan

  Is there an easy way to calculate the size of an entity stored in App Engine? I would like to know how close a particular entity is to hitting the 1 MB upper limit on entity size.

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• Identifying voice as male or female

  - by duder

  I'm not much into audio engineering, so please be easy on me. I'm receiving an audio file as input, and need to detect whether the speaker is male or female. Any ideas how to go about doing this? I'm using php, but am open to using other languages, and don't mind learning a little bit of sound theory as long as the time is proportionate to the task.

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• How do i install some modules in wxpython? i've tried with putting in site packages and doesn't work

  - by Marius

  Some modules have easy install, others need to be copied in site package but some of them really doesn't work. And i need to import 3 module(libraries) but when i run program.py with python Sheel ...apear no module named ....(so it's not installed correctly)?!

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• How t o make a magnifying glass On a picture?

  - by pengwang

  hello I want to make a magnifying glass on a picture so that the part of picture is extended ? in other words i want to find a easy method to create the illusion of a magnifying glass,I know ShapeDrawable and BitmapShader(Bitmap, Shader.TileMode.REPEAT, Shader.TileMode.REPEAT) is useful,but I donot konw how tu du it. AS http://i3.6.cn/cvbnm/72/60/36/73dfcc8862020e9ed366a55e72e88883.jpg could you give me some code or sample? thank you

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• Show or hide elements in PDF via Javascript

  - by Boldewyn

  In PDF files it is quite easy to interact with form fields via the Javascript API. Is it possible to do this (specifically showing/hiding) to arbitrary elements on a page? Say, not just form fields, but text, graphical elements, embedded images... Is there an API to interact with those? If yes, how do I identify an object?

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• year as a Column Name in a MySQL Table

  - by Laxmidi

  Hi, I've got an easy question. Is it okay to name a column in a mysql table 'year'? Any reason not to? Thanks, -Laxmidi

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• How to convert SVG images for use with Pisa / XHTML2PDF?

  - by Nick Sergeant

  I'm using Pisa/XHTML2PDF to generate PDFs on the fly in Django. Unfortunately, I need to include SVG images as well, which I don't believe is an easy task. What's the best way to go about either a) converting the SVGs to PNG / JPG (in Python) or b) including SVGs in the PDF export from Pisa?

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• Logging to TextFile from SharePoint

  - by Swami

  I'm trying to debug a webpart installed on a client's SharePoint instance. I wanted a quick and easy logging feature, so I thought of writing messages to a text file in the temp directory. SharePoint doesn't seem to like it, so what are my options?

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• How can i create array of my class with default constructor ?

  - by Freshblood

  Hello For example MYCLASS[] myclass = new MYCLASS[10]; Now myclass array is all null array but i want to have default constructed Array .I know that i can write loops for set default constructed but i am looking for more easy and simple way.

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• Which is clearer form: if(!value) or if(flag == value) ?

  - by CodexArcanum

  I understand this is a subjective question, so I apologize if it needs to be closed, but I feel like it comes up often enough for me to wonder if there is a general preference for one form over the other. Obviously, the best answer is "refactor the code so you don't need to test for falsehood" but sometimes there's no easy way to do so and the "else" branch is simply to continue processing. So when you must have an "if not false" construct, which is the preferred standard: The not operator if(!value) Or the test for false if(value == false)

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• Best way to store configuration settings outside of web.config

  - by Wil

  I'm starting to consider creating a class library that I want to make generic so others can use it. While planning it out, I came to thinking about the various configuration settings that I would need. Since the idea is to make it open/shared, I wanted to make things as easy on the end user as possible. What's the best way to setup configuration settings without making use of web.config/app.config?

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• Can a WordPress blog pull content from Django pages?

  - by Leeks and Leaks

  Say you have a WordPress theme you like, but want to make use of a bunch of Django code that's already written. Is there a good and easy, and performant way, of sucking in HTML that is output from Django and displaying it inline in a WordPress posting, or page without using browser frames? Any good examples of this?

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• QLineEdit: how to handle up and down arrows?

  - by Eye of Hell

  Hello. I have a console input in my Qt based application, it's a QLineEdit, all Ui is designed via QtDesigner. Is it any easy way way to handle up and down arrows in order to implement input history? The 'go to slot' only show returnProcessed signal, no way i can see to handle up and down arrows :(

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• Can splitting .MDB files into segments help with stability?

  - by Craig Johnston

  Is this a realistic solution to the problems associated with larger .mdb files: split the large .mdb file into smaller .mdb files have one 'central' .mdb containing links to the tables in the smaller .mdb files How easy would it be to make this change to an .mdb backed VB application? Could the changes to the database be done so that there are no changes required to the front-end application?

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• Scala: how to specify varargs as type?

  - by IttayD

  Instead of def foo(configuration: (String, String)*) I'd like to be able to write: type Configuration = (String, String)* def foo(configuration: Configuration) The main use case is to provide an easy method signature when overriding in subclasses

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• How to jar java source files from different (sub-)directories?

  - by Holger

  Consider the following directory structure: ./source/com/mypackage/../A.java ./extensions/extension1/source/com/mypackage/../T.java ./extensions/extension2/source/com/mypackage/../U.java ... ./extensions/extensionN/source/com/mypackage/../Z.java I want to produce a source jar with the following contents: com/mypackage/../A.java com/mypackage/../T.java com/mypackage/../U.java ... com/mypackage/../Z.java I know I could use a fileset for each source directory. But is there an easy solution using ANT without having to refer to all extensions explicitly?

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