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• What's the standard way to organize the contents of Java packages -- specifically the location of in

  - by RenderIn

  I suppose this could go for many OO languages. I'm building my domain objects and am not sure where the best place is for the interfaces & abstract classes. If I have a pets package with various implementations of the APet abstract class: should it live side-by-side with them or in the parent package? How about interfaces? It seems like they almost have to live above the implementations in the parent package, since there could potentially be other subpackages which implement it, while there seems to be a stronger correlation between one abstract class and a subpackage. e.g. com.foo com.foo.IConsumer (interface) com.foo.APet (abstract) com.foo.pets.Dog extends APet implements IConsumer OR com.foo com.foo.IConsumer (interface) com.foo.pets.APet (abstract) com.foo.pets.Dog extends APet implements IConsumer or something else?

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• Serialize a generic collection specifying element names for items in the collection

  - by mdresser

  I have a simple class derived from a generic list of string as follows: [Serializable] [System.Xml.Serialization.XmlRoot("TestItems")] public class TemplateRoleCollection : List<string> { } when I serialize this, I get the following XML: <TestItems> <string>cat</string> <string>dog</string> <string>wolf</string> </TestItems> Is there any way to override the xml element name which is used for serializing items in the collection? I would like the following xml to be produced: <TestItems> <TestItem>cat</TestItem> <TestItem>dog</TestItem> <TestItem>wolf</TestItem> </TestItems>

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• Using Ruby on Rails, can a polymorphic database be created in a few steps (with polymorphic associat

  - by Jian Lin

  I thought it could be created in a few steps but it can't yet: rails poly cd poly ruby script/generate scaffold animal name:string obj_type:string obj_id:integer rake:migrate ruby script/generate scaffold human name:string passportNumber:string rake:migrate ruby script/generate scaffold dog name:string registrationNumber:string rake:migrate and now change app/models/animal.rb to: class Animal < ActiveRecord::Base belongs_to :obj, :polymorphic => true end and run ruby script/server and go to http://localhost:3000 I thought on the server then if I create an Michael, Human, J123456 and then Woofie, Dog, L23456 then the database will have entries in the Dogs table and "Humen" or "Humans" table as well as in the Animals table? But only the Animals table has records, Dogs and "Humen" do not for some reason. Is there some steps missing?

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• determine which value produced a hit in SOLR multivalued field type

  - by harschware

  If I have a multiValued field type of text, and I put values [cat,dog,green,blue] in it. Is there a way to tell when I execute a query against that field for dog, that it was in the 1st element position for that multiValued field? Assumption: client does not have any pre-knowledge of what the field type of the field being queried is. (i.e. Solr must provide the answer and the client can't post process the return doc to figure it out because it would not know how SOLR matched the query to the result). Disclosure: I posted to solr-user list and am getting no traction so I post here now.

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• How do I output an individual character when using char *[] = "something"

  - by Matt

  I've been playing with pointers to better understand them and I came across something I think I should be able to do, but can't sort out how. The code below works fine - I can output "a", "dog", "socks", and "pants" - but what if I wanted to just output the 'o' from "socks"? How would I do that? char *mars[4] = { "a", "dog", "sock", "pants" }; for ( int counter = 0; counter < 4; counter++ ) { cout << mars[ counter ]; } Please forgive me if the question is answered somewhere - there are 30+ pages of C++ pointer related question, and I spent about 90 minutes looking through them, as well as reading various (very informative) articles, before deciding to ask.

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• Convert a complicated string into an array in php

  - by Patrick Beardmore

  I have a php variable that comes from a form that needs tidying up. I hope you can help. The variable contains a list of items (possibly two or three word items with a space in between words). I want to convert it to a comma separated list with no superfluous white space. I want the divisions to fall only at commas, semi-colons or new-lines. Blank cannot be an item. Here's a comprehensive example (with a deliberately messy input): Variable In: "dog, cat ,car,tea pot,, ,,, ;;(++NEW LINE++)fly, cake" Variable Out "dog,cat,car,tea pot,fly,cake" Can anyone help?

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• Is it possible to refactor this C# if(..) statement?

  - by Pure.Krome

  Hi folks, simple question :- i have the following simple if (..) statements :- if (foo == Animal.Cat || foo == Animal.Dog) { .. } if (baa == 1|| baa == 69) { .. } is it possible to refactor these into something like ... DISCLAIMER: I know this doesn't compile .. but this is sorta what i'm trying to get... if (foo == (Animal.Cat || Animal.Dog)) { .. } if (baa == (1 || 69)) { .. } Cheers :) EDIT I wonder if a lambda expression extension could do this? :P

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• Custom constructors for models in Google App Engine (python)

  - by Nikhil Chelliah

  I'm getting back to programming for Google App Engine and I've found, in old, unused code, instances in which I wrote constructors for models. It seems like a good idea, but there's no mention of it online and I can't test to see if it works. Here's a contrived example, with no error-checking, etc.: class Dog(db.Model): name = db.StringProperty(required=True) breeds = db.StringListProperty() age = db.IntegerProperty(default=0) def __init__(self, name, breed_list, **kwargs): db.Model.__init__(**kwargs) self.name = name self.breeds = breed_list.split() rufus = Dog('Rufus', 'spaniel terrier labrador') rufus.put() The **kwargs are passed on to the Model constructor in case the model is constructed with a specified parent or key_name, or in case other properties (like age) are specified. This constructor differs from the default in that it requires that a name and breed_list be specified (although it can't ensure that they're strings), and it parses breed_list in a way that the default constructor could not. Is this a legitimate form of instantiation, or should I just use functions or static/class methods? And if it works, why aren't custom constructors used more often?

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• How to save derived type (TPT) in Entity Framework?

  - by Peter Stegnar

  I have problems with saving derived type (TPT) with Entity Framework to database. Let's say I have base entity Animal and derived type Dog. I want to save Dog entity. I thought that I could do it like contex.AddToDogs(), but contex contain only base entity - Animal. So I can only save Animal object - contex.AddToAnimals(). I have also tried with contex.AddObject("Animals", dogInstance), but I get the following error: The member with identity 'NavigationProperty' does not exist in the metadata collection. But I have add EntityReference to the "NavigationProperty". So how to save derived type in EF?

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• Polymorphic classes in templates

  - by soxarered

  Let's say we have a class hierarchy where we have a generic Animal class, which has several classes directly inherit from it (such as Dog, Cat, Horse, etc..). When using templates on this inheritance hierarchy, is it legal to just use SomeTemplateClass<Animal> and then shove in Dogs and Cats and Horses into this templated object? For example, assume we have a templated Stack class, where we want to host all sorts of animals. Can I simply state Stack<Animal> s; Dog d; s.push(d); Cat c; s.push(c);

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• Inheritance and Implicit Type Casting

  - by Josué Molina

  Suppose I have the following three classes: class Animal {}; class Human : public Animal {}; class Dog : public Animal { public: void setOwner(Animal* owner) { this->owner = owner; } private: Animal* owner; }; Why is the following allowed, and what exactly is happening? Dog d; Human h; d.setOwner(&h); // ? At first, I tried to cast it like this d.setOwner(&(Animal)h), but the compiler gave me a warning, and I hit a run-time error. Edit: the warning the compiler gave me was "taking address of temporary". Why is this so?

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• play framework WS API always escape character ';' and '=' in URL

  - by user2512057

  When I send a URL like abc.efg.com/query?para1=cat;para2=dog, play WS API always convert it to abc.efg.com/query?para1=cat%03Bpara2%03Ddog. Of course, there are http:// in the beginning in the URL. my code is as below. val url= "http://abc.efg.com/query?para1=cat;para2=dog" val response = WS.url(url).get() When I use fidder or netmon to look at the data that sent to sever, I found play framework WS (2.1.5) always change to the URL above I mentioned. How do I tell WS not to convert?

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• Match a word with similar words using Solr?

  - by fayer

  I want to search for threads in my mysql database with Solr. But i want it to not just search the thread words, but for similar words. Eg. if a thread title is "dog for sale" and if the user searches for dogs the title will be in the result. and also if a user searches for "mac os x" the word "snow leopard" will appear. and the ability to link words the application thinks is related eg. house and apartment. how is this kind of logic done? i know that you can with solr look up words in a dictionary file you create/add, so solr will look for dogs and see what related words there are (eg. dog). but where do you find such a dictionary? i have no idea about this kind of implementation. please point me into right direction. thanks

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• How does the below program work in c++?

  - by Srinivasa Varadan

  I have just created 2 pointers which has undefined behavior and try to invoke a class member function which has no object created ? I don't understand this? #include<iostream> using namespace std; class Animal { public: void talk() { cout<<"I am an animal"<<endl; } }; class Dog : public Animal { public: void talk() { cout<<"bark"<<endl; } }; int main() { Animal * a; Dog * d; d->talk(); a->talk(); }

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• Clojure: using *command-line-args* in the script rather than REPL

  - by Teflon Mac

  I've clojure running within Eclipse. I want to pass arguments to clojure when running it. In the below the arguments are available in the REPL but not in the script itself. What do I need to do such that in the below typing arg1 in the REPL will return the first argument? Script: (NS Test) (def arg1 (nth *command-line-args* 0)) After clicking on the Eclipse "Run"... Clojure 1.1.0 1:1 user=> #<Namespace test> 1:2 test=> arg1 nil 1:3 test=> *command-line-args* ("bird" "dog" "cat" "pig") 1:4 test=> (def arg2 (nth *command-line-args* 1)) #'test/arg2 1:5 test=> arg2 "dog" 1:6 test=>

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• DB2 LUW Security - The DB2 DBA as a Locksmith

  Database security should have multiple locks at multiple layers with multiple keys (and perhaps some barbed wire, an electric fence, a moat and a mean junkyard dog as well). With all these locks and keys, some locksmith skills are certainly useful. Rebecca Bond introduces some of her favorite DB2 Locksmith tips.

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• What's So Great about Hand-Made?

  <b>the Tyee:</b> "Whether it's dog biscuits or sealskin parkas, creating items by hand builds culture and communities."

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• Inherit one instance variable from the global scope

  - by Julian

  I'm using Curses to create a command line GUI with Ruby. Everything's going well, but I have hit a slight snag. I don't think Curses knowledge (esoteric to be fair) is required to answer this question, just Ruby concepts such as objects and inheritance. I'm going to explain my problem now, but if I'm banging on, just look at the example below. Basically, every Window instance needs to have .close called on it in order to close it. Some Window instances have other Windows associated with it. When closing a Window instance, I want to be able to close all of the other Window instances associated with it at the same time. Because associated Windows are generated in a logical fashion, (I append the name with a number: instance_variable_set(self + integer, Window.new(10,10,10,10)) ), it's easy to target generated windows, because methods can anticipate what assosiated windows will be called, (I can recreate the instance variable name from scratch, and almost query it: instance_variable_get(self + integer). I have a delete method that handles this. If the delete method is just a normal, global method (called like this: delete_window(@win543) then everything works perfectly. However, if the delete method is an instance method, which it needs to be in-order to use the self keyword, it doesn't work for a very clear reason; it can 'query' the correct instance variable perfectly well (instance_variable_get(self + integer)), however, because it's an instance method, the global instances aren't scoped to it! Now, one way around this would obviously be to simply make a global method like this: delete_window(@win543). But I have attributes associated with my window instances, and it all works very elegantly. This is very simplified, but it literally translates the problem exactly: class Dog def speak woof end end def woof if @dog_generic == nil puts "@dog_generic isn't scoped when .woof is called from a class method!\n" else puts "@dog_generic is scoped when .woof is called from the global scope. See:\n" + @dog_generic end end @dog_generic = "Woof!" lassie = Dog.new lassie.speak #=> @dog_generic isn't scoped when .woof is called from an instance method!\n woof #=> @dog_generic is scoped when .woof is called from the global scope. See:\nWoof! TL/DR: I need lassie.speak to return this string: "@dog_generic is scoped when .woof is called from the global scope. See:\nWoof!" @dog_generic must remain as an insance variable. The use of Globals or Constants is not acceptable. Could woof inherit from the Global scope? Maybe some sort of keyword: def woof < global # This 'code' is just to conceptualise what I want to do, don't take offence! end Is there some way the .woof method could 'pull in' @dog_generic from the global scope? Will @dog_generic have to be passed in as a parameter?

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• Article Marketing Tips

  Article Marketing is the big dog when it come to internet marketing. Writing articles and getting them listed in all the major article directories, is not only a way to publish your article, but yourself.

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• Make Online Money - By Building a Website

  A nice way to make online money is to build a website. You can get someone to build your website for you or you can do it yourself. And then you can make money by selling anything you want off of the website or as an affiliate of some other company. Anything can be sold:-products, services or just information on how to do things: like how to play a guitar, or train a dog, or anything in which you may have an interest.

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• La fondation Eclipse utilise Hudson pour construire les binaires de ses projets, vers la fin de l'autre projet d'usine logicielle Jenkins ?

  Suivant le principe «Eating your own dog food» (le fait d'utiliser ses propres produits afin d'en voir les qualités et les défauts [via Wikipedia]), la fondation Eclipse utilise la version 3.0.0-RC3 d'Hudson pour son instance sandbox. [IMG]http://ftp-developpez.com/gordon-fowler/eclipse_hudson_600px.png[/IMG] La branche 3 d'Hudson désigne le développement de l'usine logicielle effectué dans le giron de la fondation Eclipse. Pour mémoire, après le conflit qui avait opposé la communauté à Oracle,

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• Should You Bother to Create Meta Tags For Your Website?

  Some people will tell you that since Google no longer uses meta tags as a factor in your search engine placement that it is no longer necessary to include them in your website SEO. It is true that the Big G is top dog in the search engine game, and it is true that having meta tags will not do anything for your SERP with them, but what about the rest of the search engines?

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• Oracle Text????~????????????????????????

  - by Yuichi Hayashi

  Oracle Text?? ????????????????????????????????????? ??????????????????????????????????????? ??????????????????????????????? Oracle Text ????????????????? ????? Oracle Text ??Oracle Database ????????????????????? Oracle Text ????????????????·?????????????? ???Edition???????? - Oracle Database Enterprise Edition(EE) - Oracle Database Standard Edition(SE) - Oracle Database Standard Edition One - Oracle Database Express Edition(XE) ?????? Oracle ??????? Database Configuration Assistant(DBCA)?????????????Oracle Text ?????????????????? ??????????????????????????????? ???????????????????(?????)????????????????????????????????? ?????????????????????????????????????? (1) ~ (4)???????????????????? (1) ????? Oracle Text???????(ctxsys)???????????????(????? SCOTT)???? CTXAPP?????????? SQL connect ctxsys/ SQL grant ctxapp to scott; (2) ???? ? ?????? SQL connect scott/tiger SQL create table test ( 2 id number primary key, 3 text varchar2(80) ); SQL insert into test ( id, text ) values ( 1, 'The cat sat on the mat' ); SQL insert into test ( id, text ) values ( 2, 'The dog barked like a dog' ); SQL insert into test ( id, text ) values ( 3, '??????????' ); SQL commit; (3) ???????(??) ??????????????????? ?????????: test_lexer ???????? JAPANESE_VGRAM_LEXER????????? SQL connect scott/tiger SQL execute ctx_ddl.create_preference('test_lexer','JAPANESE_VGRAM_LEXER'); ???? ???? OracleText???????????????????????????????????????????????????? ???? ???????????????????? ??????????????????????????????????? ??????? - JAPANESE_VGRAM_LEXER:????2???????????????????? - JAPANESE_LEXER (Oracle Text 9.0.1???????):???????????????????????????? ??????? ????????????????????????????????????????????????????????????? (4) ????????? TEST?????????????????? SQL create index test_idx on test ( text ) 2 indextype is ctxsys.context 3 parameters ('lexer test_lexer'); (5) ????????? "??"?????????????????? SQL col text for a30 SQL select id, text from test 2 where contains ( text, '??') 0; ID TEXT ---------- ------------------------------ 3 ?????????? ¦???? ???????/???Oracle Text ?? ????????Oracle Text ????

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• How to extract terms from an HTML document

  - by bookcasey

  I have a HTML document filled with terms that I need to put into a spreadsheet. They follow this basic pattern: <ul> <li class="name"><a href="spot.html">Spot</a></li> <li class="type">Dog</li> <li class="color">Red</li> </ul> <ul> <li class="name"><a href="mittens.html">Mittens</a></li> <li class="type">Cat</li> <li class="color">Brown</li> </ul> <ul> <li class="name"><a href="squakers.html">Squakers</a></li> <li class="type">Little Parrot</li> <li class="color">Rainbow</li> </ul> It's very consistent. I need to extract the string within the li.name a (so, "Spot") but only if the type is "Dog" or "Parrot", and put them in a spreadsheet. I've been trying to use Sublime Text's ability to Find with regex, but I'm really struggling, and since regex and HTML usually don't play nice, I was wondering if there is a better and easier way to accomplish this. Thanks.

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• Finding matching columns in excel

  - by fakaff

  I've never used excel before so I need the simplest solution available, and this is a work assignment due this week so I didn't have time read much of the documentation. Basically, I have two tables, A and B, and they are both thousands of rows long. Description of my task: right now (since I don't know better) I'm manually doing this: Go to row i in table B. Select entries in columns B(a, b, c) of that same row. Look for a row in table A where column A(b) matches row B(a). Paste the entries of columns B(a) of row i at the end of the row found in the last step. Repeat for row i + 1. Example: row B(cat, dog, mouse) matches A(mammal, cat, Mr. Whiskers). So I would paste B after A and have A(mammal, cat, Mr. Whiskers, cat, dog, mouse). Note: I am not joining tables. I am merely extending table A by pasting row A(b) if row A(b) matches row B(a). Also, sometimes entries are spelled slightly differently. Using wildcards to search for candidates would be of help. As the description should let on, this task is very tedious and inefficient if I don't know how to automate some operations (there are thousands of entries). Any quick tips as to how to be more productive is a big help.

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