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• How to Pass URL param in form on submit?

  - by adamwstl

  I have <form name="feedback" method="post" onsubmit="return checkform()" action="engine.php?ad="> and I need to append a variable to engine.php?ad=, which is <?=$_GET['page'];?> in php (pass a URL param to the next page using this.) How would I go about adding that? I also have it in javascript if needed.

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• Dynamic class_name for has_many relations

  - by vooD

  I'm trying to make has_many relation with dynamic class_name attribute class Category < ActiveRecord::Base has_many :ads, :class_name => ( lambda { return self.item_type } ) end or class Category < ActiveRecord::Base has_many :ads, :class_name => self.item_type end But i got errors: can't convert Proc into String or undefined method `item_type' for #<Class:0xb62c6c88> Thank you for any help!

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• Several buttons on one form calling same function

  - by user198003

  hi all, trying to develop web form using jquery. all i need is to have several (don't know how many) buttons on one form. all of those buttons have to call one same function, and to pass one parameter to that function. that function have to do some post method, but i can handle it. so, my main problem is that i don't know how to develop JS that will call specific jquery function. can you help me with this?

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• Explanation about a Java statement

  - by monn

  public static void main(String[] args) { int x = 1 + + + + + + + + + 2; System.out.println(x); } I can compile above method. Is there any explanation about the allowed multiple "+" operator?

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• Easy way to keeping angles between -179 and 180 degrees

  - by User1

  Is there an easy way to convert an angle (in degrees) to be between -179 and 180? I'm sure I could use mod (%) and some if statements, but it gets ugly: //Make angle between 0 and 360 angle%=360; //Make angle between -179 and 180 if (angle180) angle-=360; It just seems like there should be a simple math operation that will do both statements at the same time. I may just have to create a static method for the conversion for now.

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• jQuery, .empty() and memory

  - by vandalo

  Hello, my application (ASP.NET MVC) shows a page which loads data constantly, at certain intervals. The jQuery script calls a controller and this one renders a different partial view, based on certain conditions. This partial view is the appended to the DOM with jQuery; previous elements are removed with the empty() method. I've realized that after one day the browser loads something like 600Mb of memory. What am I doing wrong? Thanks Alberto

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• When To Use IEquatable And Why

  - by ChloeRadshaw

  I just dont understand this - What does IEuqtable buy you exactly?? The only reason I can see it being useful is when creating a generic type and forcing users to implement and write a good equals method. What am I missing

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• Model def in View State

  - by tinzawtun

  In my ruby on rails project in model, I have some of definition. class PlaySport < ActiveRecord::Base belongs_to :user belongs_to :sport def self.getLevel end def self.check_play_sport(cuser_id,sport_id) end def current_playing_sport end def all_played_sports end end I catch for this relation like this current_user.play_sports.current_playing_sport But I get the undefined method error "current_playing_sports" What is wrong

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• Creating Unit Tests Involving I/O?

  - by cam

  Should one create unit tests involving IO? Ie, testing a class method for serializing/deserializing another object?

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• Can an Ajax call complete before the DOM is loaded?

  - by Ek0nomik

  I am grabbing data through a jQuery Ajax call, and displaying it on the page. I need to wait for both the DOM to load and for the Ajax call to complete before I can use the data to display it on the page. Can an Ajax call ever complete before the DOM has loaded? I'm just trying to determine where I need to put my method that will manipulate the DOM and use the data I'm getting back.

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• Converting IL to C# code

  - by Praveen

  Hi All, I need to convert the IL to c# code. I have an assembly and I am reading this assembly. I get MethodBody from MethodInfo and the methodbody has a method GetILAsByteArraY() which returns a byte array now I want to comvert this IL to C# code. Please help me out in solving this.

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• "Proxying" HTTP requests

  - by Richard

  Hi all, I have some software which runs as a black box, I have no access to it. This software makes HTTP requests. What I want to do is intercept these requests, forward them on, catch the response, do something with it, before passing the response back to the software. Can this be done? What's the best method? Thanks

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• Entity Framework 4.0 GetChanges() equivalent

  - by Jonathan

  Hi In LINQ to SQL, you can override SubmitChanges and use the method this.GetChangeSet() to get all the inserts, updates and deletes so that you can make last minute changes before it is committed to the database. Can this be done in EF 4.0? I see there is a override for SaveChanges but I need to know the equivalent for GetChangeSet()

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• Writing Logs to an XML File with .NET

  - by JL

  I am storing logs in an xml file... In a traditional straight text format approach, you would typically just have a openFile... then writeLine method... How is it possible to add a new entry into the xml document structure, like you would just with the text file approach?

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• Delegates with explicit "this" pointer?

  - by Qwertie

  Is it possible to adapt a method like this function "F" class C { public void F(int i); } to a delegate like Action<C,int>? I have this vague recollection that Microsoft was working on supporting this kind of adaptation. But maybe I misremembered!

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• when would you use PendingIntent?

  - by Moshik

  Hi, I tried to understand from the api the porpese of PendingIntent, coz sometimes some method i use requires this, i still didnt get the idea right, anyone could exaplin? why cant i juse use context? thanks, moshik

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• How to make a scrollable widget?

  - by Sebi

  As far as I have read in the Internet and official documentation, it isn't possible to make a scrollable widget. Also all my tries failed. I even tried to subclass TextView to implement my own scroll method, but nothing worked. Are there any ways to achieve that? Btw.... there are solutions if you use for example htc sense or home desktop ++, but i want to make it available to other users which don't use this

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• Is it a bad programming practise to have "Public" members inside an "Internal" class?

  - by Amby

  I mean, won;t it be more specific and appropriate if i "only" keep "protected","internal" and "private" members (field,method,property,event) in a class which is declared as "internal" ? I have seen this practice ( having "public" members in an "internal" class) in various code so just wanted to know is it a bad practice or does it has some benefit or advantage. [Only concerned about C#] Thanks for your interest.

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• A nuts and bolts reference to C# performance and memory use

  - by phil

  I wonder if anyone could point me in the direction where I can read about the nuts and bolts of C#. What I'm interested in learning are method call costs, what it costs to create objects and such. My aim of learning this is to get a better understanding of how increase the performance of an application and get a better understanding of how the C# language works. The reference should preferable be a book, a book that I can read cover to cover.

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• Redefine Object.defineProperty in Javascript

  - by kwicher

  I would like to learn if it is possible to redefine the "definePropery" function of the Object(.prototype) in a subclass(.prototype) so that the setter not only sets the value of the property but also eg executes an additional method. I have tried something like that: Myclass.prototype.defineProperty = function (obj, prop, meth) { Object.defineProperty.call(this, obj, prop, { get: function () { return obj[prop] }, set: function () { obj[prop] = n; alert("dev") } }) } But id does not work

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• One log4j.xml - many scripts

  - by psed

  One of my utility jar files is used by different nix scripts, located in different categories. Problem: unable to initialize log4j framework (unable to find log4j.xml). Solution, that allows to configure logger correctly while launching jar classes by different scripts - usage of env vars and force configuring using DOMConfigurtor.configure(pathToConfXml) method. is it possible to avoid path hardcoding and configure logger inside of a script? Appreciate all your help. Thanks.

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• What to prefer in the following case?

  - by GK

  say suppose I have class as : public class Age { private int age; public int getAge() { return this.age; } } In my Main class I am calling the getAge() method many times. So I wanted to know is it advisable to call so many times or call once and assign it to some variable and use that variable. Which is best and why?

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• Empty String API arguments for actionwebservice received as "SOAP::Mapping::Object" instead of ""

  - by user311985

  I've built an API using actionwebservice and when a client calls a method to pass in an empty string (""), it's to_s value is # instead of "". But when the client passes in "hello", it's to_s value is "hello". class UsersApiController < ApiController web_service_api UserApi def create_or_update(arg1) Rails.logger.info arg1.to_s # Displays "#<SOAP::Mapping::Object:0x3a89c08>" if arg1 is an empty string end end

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• Regular Expression

  - by Blanca

  Hi! i would like to avoid texts like this one: height="49" with a regular expresion. I tought in .replaceAll("\s*="*"",""); (replaceAll is used as a method in a java class), but eclipse don't allowed me to do that. Any other suggestion?? tx!

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• Where to read the provided height value in an UITableViewCell?

  - by mystify

  I made a UITableViewCell subclass, and now I want that subclass to be "clever". It should align it's contents to the height of the row. But for this, the cell must know what height value was provided for it in this method: - (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath However, no matter what value I assign here, my cell's frame is 44 px height at initialization time (default style). Is there any way I can get that value from the cell at initialization time?

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