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• JComboBox to string

  - by gabrielle fregil

  I have a String array of names, and then I added it into an editable JComboBox. The user can either pick his/her name from the choices or just input his/her name if not in the choices. How do I put the user input into a new string variable? String [] chooseName = { Mark, John, Allison, Jessica }; JComboBox combo = new JComboBox (chooseName); combo.setEditable(true); String chosenName = /* how do i place what the user inputed here? */

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• Proper programming procedure?

  - by Rob

  I am creating a scoring application which is dependent upon what a user selects at the beginning menu. Example: If a user clicks 18, I want it to base itself off 18 holes of golf. If a user clicks 9, I want it to base itself off 9 holes of golf. Is it better to create a separate class for the code for 9 holes, and then another for 18 holes and then launch whichever depending on what the user selects? Or should I keep everything in 1 file and use a global variable to define different parameters? Still very new to android programming (or programming in general) so not sure of the proper "etiquette" if you will... Also what would be the pro's and con's of doing it either way? (If any) Thanks in advance!

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• jqGrid Additional POST datas when deleting

  - by user300657

  I want to delete a row in the grid, but the grid always post's only the id and oper, I also want to post additional data. My jqgrid is something like : jQuery("#editgrid").jqGrid({ url:'autoJSON.php', datatype: "xml", colNames:['RowID','Asigurator','Cilindree','Persoana', 'Perioada', 'Pret'], colModel:[ {name:'rowID',index:'rowID', width:60, editable:true}, {name:'idAsigurator',index:'idAsigurator', width:100, editable:true,editoptions:{size:20}}, {name:'cilindree',index:'cilindree', width:90, editable:true,editoptions:{size:20}}, {name:'persoana',index:'persoana', width:300,editable:true,edittype:"select",editoptions:{value:"Persoana juridica:Persoana juridica;Pensionar:Pensionar;Persoana fizica:Persoana fizica"}}, {name:'perioada',index:'perioada', width:120, align:"right",edittype:"select",editable:true,editoptions:{value:"12 luni:12 luni;6 luni:6 luni"}}, {name:'pret',index:'pret', width:80, align:"right",editable:true,editoptions:{size:20}} ], width:900, height:600, pager: '#pagered', sortname: 'rowID', viewrecords: true, sortorder: "desc", caption:"Autoturisme", editurl:"autoPOST.php", }); jQuery("#editgrid").jqGrid('navGrid',"#pagered",{edit:true,add:true,del:true}); What should I do to access in autoPOST.php rowID also as a post variable. Thanks

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• Getting data from JFrame AFTER the form is filled

  - by mary jane

  I'm trying to get data for my application from a form set in an external window (getDataWindow extends javax.swing.JFrame). The problem is that functions are executed before form is filled in. getDataWindow dataW=new getDataWindow(); dataW.setVisible(true); size=dataW.returnSize(); I've tried also adding additional boolean variable to getDataWindow getDataWindow dataW=new getDataWindow(); dataW.setVisible(true); while(!dataW.checkIfReady()){wait();} size=dataW.returnSize(); But it makes also the window wait (it appears but it's black inside and nothing happens). I think i should create some threads for that - I've tried to call a window making function getDataWindow in java.awt.EventQueue.invokeLater(new Runnable()) but I had to initialize dataW earlier so dataW.checkIfReady() could be called, so it is a catch 22.

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• Best Online C++ Refresher

  - by Bill

  It's been a longtime since I've done any C++ (probably about 13 years, since I graduated college). I've developing in various others languages since then. My new gig uses a fair bit of C++. Any recommendations for getting bootstrapped? To clarify -- I don't need an "into to programming" book. E.g., what's a variable, flow control, etc. I understand the concepts of OO having implemented them, etc. I'm looking for the best way to get to the specifics of C++.

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• Copy method optimization in compilers

  - by Dženan

  Hi All! I have the following code: void Stack::operator =(Stack &rhs) { //do the actual copying } Stack::Stack(Stack &rhs) //copy-constructor { top=NULL; //initialize this as an empty stack (which it is) *this=rhs; //invoke assignment operator } Stack& Stack::CopyStack() { return *this; //this statement will invoke copy contructor } It is being used like this: unsigned Stack::count() { unsigned c=0; Stack copy=CopyStack(); while (!copy.empty()) { copy.pop(); c++; } return c; } Removing reference symbol from declaration of CopyStack (returning a copy instead of reference) makes no difference in visual studio 2008 (with respect to number of times copying is invoked). I guess it gets optimized away - normally it should first make a copy for the return value, then call assignment operator once more to assign it to variable sc. What is your experience with this sort of optimization in different compilers? Regards, Dženan

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• C++ Typing and OOP child classes

  - by Zack

  I'm a bit confused: If I have a base class A, and a class B which extends A, can a variable of the type A hold a value of the type B and vice versa? If yes, why? Aren't they completely different even if B is derived from A? How about type-safety? If this is possible, what things do I have to mind when taking use of this? How would this work out in terms of performance? Note: Sorry if I asked too many questions, just ignore them and just look out for those "marked" with the list decoration dot :) Also, this is not my homework. I'm a hobby programmer and have skills in scripting languages with OOP, yet I'm relatively new to OOP typing in C++.

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• PHP OOP: Unique method per argument type?

  - by sunwukung

  I'm writing a little homebrew ORM (academic interest). I'm trying to adhere to the TDD concept as a training exercise, and as part of that exercise I'm writing documentation for the API as I develop the class. Case in point - I'm working on a classic "getCollection" type mapper class. I want it to be able to retrieve collections of asset X (let's say blog posts) for a specific user, and also collections based on an arbitrary array of numeric values. So - you might have a method like any one of these $User = $UserMapper->load(1); $ArticleCollection = $ArticleMapper->getCollection(range(10,20)); $ArticleCollection = $ArticleMapper->getCollection($User); $ArticleCollection = $ArticleMapper->getCollection($User->getId()); So, in writing the documentation for the getCollection method - I want to declare the @param variable in the Docblock. Is it better to have a unique method for each argument type, or is it acceptable to have a method that delegates to the correct internal method/class based on argument type?

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• From Fraction to Decimal and Back?

  - by CC

  Hi folks... Is it possible to store a fraction like 3/6 in a variable of some sort? When I try this it only stores the numbers before the /. I know that I can use 2 variables and divide them, but the input is from a single text field. Is this at all possible? I want to do this because I need to calculate the fractions to decimal odds. A bonus question ;) - Is there an easy way to calculate a decimal value to a fraction? Thanks..

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• Could not find any resources appropriate for the specified culture or the neutral culture.

  - by Captain Comic

  I have created an assembly and later renamed it. Then i started getting runtime errors when calling toolsMenuName = resourceManager.GetString(resourceName); The resourceName variable is "enTools" at runtime. Could not find any resources appropriate for the specified culture or the neutral culture. Make sure "Jfc.TFSAddIn.CommandBar.resources" was correctly embedded or linked into assembly "Jfc.TFSAddIn" at compile time, or that all the satellite assemblies required are loadable and fully signed. The code: string resourceName; ResourceManager resourceManager = new ResourceManager("Jfc.TFSAddIn.CommandBar", Assembly.GetExecutingAssembly()); CultureInfo cultureInfo = new CultureInfo(_applicationObject.LocaleID); if(cultureInfo.TwoLetterISOLanguageName == "zh") { System.Globalization.CultureInfo parentCultureInfo = cultureInfo.Parent; resourceName = String.Concat(parentCultureInfo.Name, "Tools"); } else { resourceName = String.Concat(cultureInfo.TwoLetterISOLanguageName, "Tools"); } // EXCEPTION IS HERE toolsMenuName = resourceManager.GetString(resourceName); I can see the file CommandBar.resx included in the project, i can open it and can see the "enTools" string there.

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• In Linux, how can I completely disregard the contents of /etc/ld.so.cache?

  - by BillyBBone

  Hi, For the purposes of prototyping a new set of shared libraries in a development sandbox (to which I don't have root access), I'd like to know how to execute a binary while completely overriding the contents of /etc/ld.so.cache, so that none of the system libraries get loaded. How can this be done? I have looked at mechanisms like setting the LD_LIBRARY_PATH environment variable or launching the program wrapped inside /lib/ld-linux.so, but these methods all seem to supplement the loading of libraries from /etc/ld.so.cache, but not override it completely. Help?

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• Carrying scope of "this" into inner functions

  - by Matrym

  How can I extend the scope of this inward? I thought reassigning a higher scoped variable would do the trick... what am I doing wrong? http://jsfiddle.net/8bqXM/ function Player(configs) { this.opts = { playerID: "cSurf" }; configs = $.extend(this.opts, configs); var the = this; this.init = function(){ var $player = $("#" + the.configs.playerID); alert($player.attr("id")); } } var cSurf = new Player(); $(document).ready(function(){ cSurf.init(); });

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• Logging into SO with curl

  - by Good Person

  I'm working on a project and I want to log into SO via curl. I use an openid via Google which means that I need to log into Google first. Here is the code I have so far #!/usr/bin/env sh . ./params.sh #the file with username and password curl --silent https://www.google.com/accounts/ClientLogin \ -d Email=$username -d Passwd=$password \ -d accountType=GOOGLE \ -d source=localhost-test-1 \ -d service=lh2 \ -o tokens #get $Auth as a variable . ./tokens echo $Auth; How do I use the $Auth token to log into SO? edit: I found http://code.google.com/apis/gdata/articles/using_cURL.html and I'll post the updated code soon.

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• Problem with url_for in ActionMailer template

  - by macek

  I'm attempting to provide a confirmation link in my user welcome email and I'm getting the following Rails error: Need controller and action! It makes a fuss about this line: <p>Please take a moment to activate your account by going to: <%= link_to confirm_user_url(:id => @user.confirmation_code) %>.</p> In my development.rb environment, I have the following line: config.action_mailer.default_url_options = { :host => "localhost", :port => 3000 } There's no problem with the @user variable. I've tested the email with things like @user.username and @user.confirmation_code. I'm only getting trouble with url_for and named routes like confirm_user_url. When I check my routes with rake routes, confirm_user shows up, so it's not an issue with the named route not existing. I can't seem to figure it out. What gives?

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• How to force main Acivity to wait for subactivity in Android?

  - by rmaster

  hi, I am calling a subactivity from main activity. This subactivity should take few numbers from user (i'm using Edit text control to achieve this), save them to static variable in another class and terminate. I want main activity to wait for subactivity but both are just running simultaneously. Even doing sth like that doesn't help: Thread t = new Thread(new Runnable(){ public void run(){ Log.v("==================", "run "+new Date()); startActivityForResult(new Intent(ctx,myCustomSubactivity.class),1); } }); Log.v("==================", "calling run "+new Date()); t.start(); try { t.join(); } catch (InterruptedException e) {Log.v("==================", "can't join");} Log.v("==================", "back from activity "+new Date()); do you know how to force main activity to wait? Thread.wait() method is not supported in Android(program throws error).

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• Rails object inheritence with belongs_to

  - by Rabbott

  I have a simple has_many/belongs_to relationship between Report and Chart. The issue I'm having is that my Chart model is a parent that has children. So in my Report model I have class Report < ActiveRecord::Base has_many :charts end And my Chart model is a parent, where Pie, Line, Bar all inherit from Chart. I'm not sure where the belongs_to :report belongs within the chart model, or children of chart model. I get errors when I attempt to access chart.report because the object is of type "Class" undefined local variable or method `report' for #< Class:0x104974b90 The Chart model uses STI so its pulling say.. 'Pie' from the chart_type column in the charts table.. what am I missing?

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• Problems reading text file data in Java

  - by user1828401

  I have this code: BufferedReader br =new BufferedReader(new FileReader("userdetails.txt")); String str; ArrayList<String> stringList = new ArrayList<String>(); while ((str=br.readLine())!=null){ String datavalue [] = str.split(","); String category = datavalue[0]; String value = datavalue[1]; stringList.add(category); stringList.add(value); } br.close(); it works when the variables category and value do not have a comma(,),however the values in the variable value does contain commas.Is there a way that I can split the index of the without using comma?

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• How to insert complex strings into Actionscript?

  - by Ole Jak

  How to insert complex strings into Actionscript? So I have a string -vvv -I rc w:// v dv s="60x40" --ut="#scode{vcode=FV1,acode=p3,ab=128,ch=2,rate=4400}:dup{dt=st{ac=http{mime=v/x-flv},mux=mpeg{v},dt=:80/sm.fv}}" How to insert it into code like public var SuperPuperComplexString:String = new String(); SuperPuperComplexString = TO_THAT_COMPLEX_STRING; That string has so many problems like some cart of it can happen to be like regexp BUTI DO NOT want it to be parsed as any kind of reg exp - I need It AS IT IS!) How to put that strange string into variable (put it not inputing it thru UI - hardcode it into AS code)?

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• Javascript array value is undefined ... how do I test for that

  - by Ankur

  I am trying to test to see whether a Javascript variable is undefined. You will see that I am not expecting the value of predQuery[preId] to be 'undefined' if I don't first get an alert saying "its unbelievable". But I often do, so I am guessing that my statement predQuery[preId]=='undefined') is not matching the undefined elements properly. if((predQuery.length < preId) || (predQuery[preId]=="") || (predQuery[preId]=='undefined')){ alert("its unbelievable"); alert(predQuery[preId]); queryPreds[variables] = preId; queryObjs[variables] = objId; predQuery[preId] = variables; } else { alert(predQuery[preId]); var predIndex = predQuery[preId]; queryPreds[predIndex] = preId; queryObjs[predIndex] = objId; } I can add more code if needed.

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• Problem with Refreshing data in ExpandableListView

  - by -providerivan.longin1

  Hi! My problem is when I want to refresh data in ExpandableListView while being in that current activity. I create adapter and when I want to add new data to list I call again constructor of that adapter(it is my private variable) with all new data....and then I call onContentChanged() method to redraw my list. But what happens is that I cant expand my list any more...like it is blocked or something and logcat isn't saying anything... This is the code that i call after setting new data in arraylists and maps: mAdapter = new MyExpandableListAdapter( this, groupData, R.layout.contact_list_parent, new String[] { NAME ,NUM_PHOTOS},//NUM_PHOTOS new int[] { R.id.rowText1, R.id.rowText2, R.id.photoAlbumImg }, childData, R.layout.contact_list_child, new String[] { NAME,NUM_PHOTOS}, //NUM_PHOTOS new int[] { R.id.rowText1, R.id.rowText2, R.id.photoAlbumImg } ); this.onContentChanged(); If anyone knows answer to this question please help me:) Thanks.

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• passing session id via url

  I'm trying to get my script to use url session id instead of cookies. The following page is not picking up the variable in the url as the session id. I must be missing something. First page http://www.website.com/start.php ini_set("session.use_cookies",0); ini_set("session.use_trans_sid",1); session_start(); $session_id = session_id(); header("location: target.php?session_id=". $session_id ); Following page - http://www.website.com/target.php?session_id=rj3ids98dhpa0mcf3jc89mq1t0 ini_set("session.use_cookies",0); ini_set("session.use_trans_sid",1); print_r($_SESSION); print(session_id()) Result is a different session id and the session is blank. Array ( [debug] = no ) pt1t38347bs6jc9ruv2ecpv7o2

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• What is the best way to declare a property?

  - by Simon

  Hi. We declare properties using the @property keyword and synthesize it in the implementation file. My question is, What if I declare a property using the @property keyword and also declare a variable in the interface block with the same name? For example, consider the following code, Interface: @interface myClass : NSObject { NSString *myClass_name; // LINE 1 } @property(nonatomic, retain) NSString *myClass_name; // LINE 2 @end Implementation: @implementation myClass @synthesize myClass_name // LINE 3 @end Declaring myClass_name in LINE 1 will make any problem? Like any reference problem or any unnecessary memory consumption problem?

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• Reference to an instance method of a particular object

  - by Andrey

  In the following code, if i try to pass method reference using the class name, works. But passing the reference variable compiler gives an error, i do not understand why? public class User { private String name; public User(String name) { this.name = name; } public void printName() { System.out.println(name); } } public class Main { public static void main(String[] args) { User u1 = new User("AAA"); User u2 = new User("BBB"); User u3 = new User("ZZZ"); List<User> userList = Arrays.asList(u1, u2, u3); userList.forEach(User::printName); // works userList.forEach(u1::printName); // compile error } } Thanks,

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• Need help: input int from console and pass it into method in different class

  - by christophe

  i'm a beginner, Need help, Please!!! I want to read number "a" from console and then store them in variable to use as passing to a different class (different .java file). How do i code the 2 classes? thanks public class PassedInMethod{ private int a; . public PAssMethod(int a) { a = a; // TODO: where to get the a? System.out.println("a was passed in!"+a); } public class Mainclass{ public static void main( String args[] ){ Scanner input = new Scanner( System.in ); int a; System.out.print( "Enter your nember: " ); a = input.nextInt(); PassedInMethod(int a); }

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• Java, searching within a list of objects?

  - by Rick

  I'm a bit lost on the way to make this happen the fastest. I have a large list of objects that have basic variable attributes (with getters / setters) and I need to do a search in this list to find the objects within the list that match a given parameter I have found how to do a regular list search but I need to, for example search for the value of the result of doing a call getName() for each object in the list and get objects that have a result that matches my input. Something like below where the third argument is the result of the method call and the second is what I am trying to find. int index = Collections.binarySearch(myList, "value", getName()); Any advice is appreciated

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