Questions tagged [factory-method]
Use this tag for code reviews of, or involving methods that create a new instance of a given type, often with parameters that determine how the instance gets created.
154
questions
21
votes
2
answers
4k
views
Python - Tkinter - periodic table of chemical elements
Inspired by a question on StackOverflow I decided to code a GUI that is simple, efficent and can be used in other projects as well. I wanted to share this code since it probably is usefull to other ...
- 487
14
votes
4
answers
2k
views
Numerical integration in C++: Newton-Cotes formulas
I have tried my hand with implementing simple quadrature formulas in C++.
Definite integral: $$\int_a^b f(x) dx$$
Domain of integration \$[a, b]\$ divided into \$n\$ intervals of equal length \$h = (b ...
- 331
13
votes
2
answers
155
views
"Drone Racer" now shipping in your local area
This question is a follow-up of this one; where I present a software to plan and manage drone races. I might come with a new question about the SQL part in a few days as well.
The code can still be ...
- 28.6k
12
votes
3
answers
6k
views
Building car factory with custom features per car
I was once asked in an interview to build a factory that makes cars.
All cars has common features like price, rating and color and they have some features like fuel injection which can on specific car ...
- 283
11
votes
2
answers
706
views
Beep-beep I'm a car factory
I have implemented to following generic factory in C++11 using smart pointers and I would like to get some feedback about it.
(Please note that I can't use C++14)
Due to company policies I have to ...
- 213
10
votes
3
answers
670
views
Is this correct factory method pattern?
I know that there are many similar questions, but I don't understand most of those questions because I'm not sure if I know what a factory method pattern is.
So, after reading many examples over the ...
- 378
10
votes
3
answers
4k
views
C++ Template to implement the Factory Pattern
Design
A template class that will create a concrete instance of an interface class when given the name (as a string) of the concrete class.
This design is often seen in code, so the purpose of this ...
- 373
10
votes
1
answer
89
views
Methods creating transform functionality on Collections
I have written a few simple-to-be-used methods in Java 8, and am wondering what could be improved upon those:
...
- 10.6k
10
votes
0
answers
1k
views
Private VBA Class Initializer called from Factory #2
About
This is a follow-up of a previous question Private VBA Class Initializer called from Factory. I've decided to create a new question instead of answering my old question because I would like the ...
- 1,381
9
votes
4
answers
5k
views
Creating unique registration numbers using object factories
I'm learning about immutability and uniqueness in Java, particularly the use of defensive programming and object factories.
I have been asked to create a class containing an object factory that when ...
- 191
9
votes
5
answers
10k
views
Instantiating a C++ class based on an enum value
I have a bit of code duplication and trying to figure a better way to reduce it. I'm looking for any suggestions. If this was in Java I could easily use reflection.
The code posted is a basic ...
- 221
9
votes
4
answers
37k
views
Using std::unique_ptr and std::move
I'm trying out new things (on class Inproc), specifically using std::unique_ptr and std::move...
9
votes
2
answers
3k
views
8
votes
2
answers
2k
views
8
votes
4
answers
2k
views
Packet Factory design for networking application
I'm working on a network application that implements a custom protocol. I want to easily extend the application support over the protocol as it changes. Also, as the application extends, I might need ...
- 123
8
votes
1
answer
485
views
Private VBA Class Initializer called from Factory
I've been playing with COM lately and while getting to understand the mechanism of how class methods/properties are called an idea came to mind: what if we can have a global instance of a class that ...
- 1,381
7
votes
1
answer
2k
views
Object-oriented calorie counter
Object-oriented program for a calorie counter sporting polymorphic
methods for both genders.
Principles to adhere to:
Uniform Access Principle
Polymorphism
Dependency inversion principle through the ...
- 385
7
votes
1
answer
3k
views
Compile-time plugin system
Background
For a piece of software that I need to get extensible, I wanted to design a
simple compile-time "plugin" system in C++.
My use case was that the program (actually a library) can accept ...
- 285
7
votes
1
answer
402
views
Polymorphic TLV serialization
Inspired by this question I decided to write an alternative that uses polymorhphism and a Factory pattern. The code works for the subset of implemented types, namely ...
- 65k
7
votes
1
answer
2k
views
C++11 Logging Architecture
To create a Logging system for a larger application, I came up with the following draft. The log sinks aren't detailed yet, but the factory method for logger creation and a rough draft of the logger ...
- 171
7
votes
1
answer
2k
views
Factory design for math problems
I'm creating a factory design for math problems. The idea which I have is:
When the factory initializes, creates in a list some problems (20 initially)
If the program wants more than 20, the list ...
6
votes
3
answers
2k
views
Creating HTTP proxies for services
I have a HTTP client factory that creates a separate HTTP proxy instance for each of my services - which are in the cloud. The factory creates each instance on the basis of an interface which the ...
- 255
6
votes
3
answers
7k
views
Chess move validator
I have written code for making a Chess Validator, which will validate the moves of a chess game.
There is a Main class which is taking the input from the user, about the move.
Problem Description
...
6
votes
4
answers
1k
views
Simple factory retrieving object by name [closed]
Despite the fact that this code works, I would like to know if there's any situation I did not anticipated, and/or if what I am trying to do is some what wrong.
-std=C++11 flag needed
...
- 171
6
votes
2
answers
502
views
Simple factory pattern for cooking a pizza
I have developed a command line application which prompts the user to initially select an oven and then requests that they cook a pizza. The oven affects the pizzas cooking time. The pizzas ...
- 163
6
votes
1
answer
104
views
6
votes
1
answer
251
views
Use of static factory methods for vectors and matrices library
I've been working on a Java-based mathematics library focusing on vectors and matrices. I plan to use it for an important upcoming project, so the classes are analogous to data types available in GLSL ...
- 283
6
votes
2
answers
233
views
Abstract Factory Experiment
While I should probably be using Dependency Injection via Ninject or a similar project, I have been attempting to implement an abstract factory design that would provide me with the following easy to ...
- 223
6
votes
2
answers
2k
views
Is this a correct way to use Factory Pattern?
I have an abstract class which implements the IDataCreator interface:
...
- 185
6
votes
1
answer
1k
views
Factory template method for generalized functors
(A quick note on terminology: I use 'generalized functor' to refer to a functor that can be initialized from any callable entity, similar to the definition from Alexandrescu's Modern C++ Design. I use ...
- 526
6
votes
1
answer
227
views
Universal Spreadsheet reader/writer
I have a project that reads spreadsheets as a rectangular list of lists (matrix) transforms the matrix and then writes it to another spreadsheet. I want to be able to read from and write to multiple ...
- 2,381
6
votes
1
answer
57
views
ItemFactory Class - Creates copies of predefined items by name and returns by pointer
I'm working on writing a text based RPG game, and I've decided to define each possible item as a JSON file in a specific directory. The item factory is meant to act as a singleton, and uses static ...
- 875
6
votes
1
answer
209
views
2d game enemy entities factories, probably in need of refactoring
So I'm making a 2d shoot'em up game as a way of learning canvas, and larger-scale programming than what I'm accustomed to. I'm a purely front-end web dev, I can't say I'm very experienced in this.
...
- 341
6
votes
2
answers
1k
views
Python REST API clients
I am working on a project right now, where we need to search different APIs, then clean & persists data to database and finally pushing to Elasticsearch.
The high level code looks like this:
<...
- 113
6
votes
1
answer
119
views
Extendable JavaScript module that converts between camelCase, PascalCase, and underscore_case
The basic idea is that by defining three functions--recognize, dissect, and combine--...
- 1,884
5
votes
1
answer
225
views
Message factory
Today I thought about Factory Design Pattern in Swift, and I do an implementation with Extension.
My post is about if anyone have any observation or issue about this implementation violate any ...
- 239
5
votes
2
answers
10k
views
Java implementation of the Factory Method pattern
I am working on a very simple game and thought it would be a good opportunity to learn and use the Factory Method pattern for creating game objects. I studied the pattern but I'm a bit confused about ...
- 387
5
votes
2
answers
193
views
Model-to-Prefab mapper and factory
I am creating a fluent interface to build user interfaces in the Unity game engine.
As a subcomponent of this library, I have a set of objects called Components (e.g. Panel, Button, etc) that I want ...
- 5,187
5
votes
1
answer
341
views
Create Java object from from page content or plain text
My job is to make a specified java objects from web page that contains following text:
Companies:
...
- 277
5
votes
1
answer
329
views
Python factory method with easy registry
My aim is to define a set of classes, each providing methods for comparing a particular type of file. My idea is to use some kind of factory method to instantiate the class based upon a string, which ...
- 153
5
votes
2
answers
152
views
Naming Vegetable Factories
Given the code below, I'm curious to know if you'd have better naming suggestions for types:
VegetablePresentersFactory
...
- 151
5
votes
1
answer
245
views
Abstract factory or inversion of control pattern?
I have several generic methods that use the typeof operator to determine the type of mapper class to create. Eventually this is going to get out of hand.
Can ...
- 51
5
votes
1
answer
172
views
Anonymous methods, factory methods, threading, and XML input
I have an application which retrieves data from a (potentially) very large XML file. A combination of XMLReader and XDocument seemed to be the only way I could manage the entire thing the way I ...
- 169
5
votes
1
answer
1k
views
Using $q in Angular JS to pass navigator geo JSON from factory to controller
This code is used to get the users location and deliver it as a resource to the controller. The aim is to have this data shared across multiple controllers in the application. So far this does deliver ...
5
votes
0
answers
219
views
Factory class that uses reflection to instantiate objects by class name
In this SO post Dynamically choose class from string Alexander Platonov creates a Function on the fly and then uses Application.Run() to instantiate an Object by ...
- 4,123
4
votes
2
answers
1k
views
"Fancy-pants" vs "Cowboy" coding [closed]
Based on the post I made here: RFC on "Factory" code and its responses, and my (inner) response to those responses, I'm beginning to wonder if it would be just as well to simply switch based ...
4
votes
2
answers
270
views
4
votes
4
answers
198
views
Factory Method Pattern - Base implementation to Add New Records
Most importantly which bothers me in the following implementation is the call in BranchAddManager, do I really need to call ...
- 433
4
votes
1
answer
2k
views
Factory pattern with controls
I've created factory to create WPF controls. I have string with control name and I map it to enum. I think it's bad implementation of factory pattern. So please show me where I've made mistake.
Main ...
- 353
4
votes
2
answers
68
views
Configuring an editor for various languages using Factory Method Pattern
I need to know if my code is a valid implementation of the factory method pattern. Also, if the Configuration and Editor were interfaces would this still be a valid implementation of the Factory ...
- 127