Questions tagged [interface]
Object interfaces allow you to create code which specifies which methods a class must implement, without having to define how these methods are handled.
195
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Date range generator
An app has a feature that's much like any calendar application (like the Outlook calendar for example).
Consequently, I need to do a lot of date logic. I wrote a class with date calculation methods ...
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1
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Java: Using one class or algebraic data types to model different state?
I'm creating a tool to analyze a card game which is played by three players. A Card is associated with a number of points and looks like this:
...
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.NET Repository Pattern
I'm currently in the process of defining some framework, one of the first things that I thought I could start with was defining some repository pattern/layer.
I generally wanted some input on it, ...
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implementing abstract classes vs interfaces [closed]
I am new to using interfaces and abstract classes. The team I am working with came up with an implementation of what they call a base class that will be implemented by all view model classes. This is ...
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Lightweight interface implementation in Python 3 using abstract classes
Here is my take at a lightweight interface implementation, where I focus on discoverability of suitable classes from strings (for simplicity, class name is used as an id). Each interface has it's own &...
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A simple java game engine [closed]
I'm starting an object orientated game engine in Java. My plans for the engine is to be able to split things easily into multi-core loads. My idea is that a Unique (interface with a ...
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2
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77
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Registering listeners according to SOLID pricipals
I'm practicing oop concepts these days. To figure it out I tried the below problem.
There is a sensor monitoring system. It is a simple system that prints a value, ...
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26
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Filtering methods for 3 collections
I'll start by saying that I just started learning Go coming from Python (and some basic on Java), so I am trying to understand how to write Go code in more idiomatic way and not in a Python way. Any ...
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answer
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Typescript : Adding types to a function that takes in a string and returns a different promise based on the string
I have a function that takes in a string and based on the string hits different APIs to fetch images.
I have solved it by writing an interface and then as the return type of the function, it returns a ...
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414
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Best approach for the Design Pattern for multiple schedulers using interface and abstract class
I have a requirement to fetch data for different types of Users (Customers, Publishers etc) for three different timelines (retro, current, and past), all have different URLs. There is a scheduler ...
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166
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347
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multiple inheritance in c++ to implement different interfaces
I am working on a finite element (FE) code and want to provide multiple material models (20+). In FE applications, the computational domain is subdivided into a set of geometrically simple elements, e....
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Using "Generics" to implement "Unit Of Work"
I need to design a generic "Unit Of Work", basically so that I can "change the context of the Database" only changing the implementation of ...
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IService<T> or defining IProductService, ICustomerService
As per tutorial here, I have the following classes:
(In reference to this tutorial's section)
...
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Refactoring validator system
I've validator system that validates input data before saving to DB.
So let's say I want to create new user.
We are at the service class:
...
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3
answers
139
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Returning interfaces in Java without significant casting
I am writing some code that takes and returns interfaces following the patterns in Effective Java Third Edition. I understand the principle - we want to take in interfaces because in many cases we don'...
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503
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Interface class for SQLite databases
I am learning the basics about managing an SQLite database by using Python and, mainly for practice purposes, I have then defined an interface class in order to let operations on database as clear as ...
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Code for creating a dialog for choosing a date
I have code that creates an AlertDialog to select a date by a user. I ran into a problem that this code began to take up a lot of space. Could you offer ideas on how to shorten this code / put it into ...
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C++ generic task interface for delayed execution
I want to rework my current game-server engine to use some global queue of tasks which will be distributed through all the working threads.
I started with task interface. I want it to be able to ...
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Should Golang interface be shared among different packages of an application?
I'm developing a Go application that has lots of packages.
Many of the packages use the same type from a 3rd party library.
Should an interface be defined for the type in each package, and let the ...
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Architecture Logging
I have two database tables UsersDownload, Non-UsersDownload. There is also two model object and two service that take in the object and insert the data into the correct table. Is this the best ...
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65
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Schedule talks in tracks [closed]
Consider my simple business requirement as follows:
There is a list of talks and they need to be scheduled in tracks. Each track has a morning session starting at 9am and an afternoon session starting ...
3
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1
answer
409
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C# REST / Http Client Abstraction
I have a REST library. These are the abstractions. Have I missed anything that a developer would need to use this in a dependency injection / IoC Container scenario? Anything that bothers you about ...
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210
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C# Dictionary Wrapper for VBA
I am a technical reviewer/writer and I use VBA for Word a lot to manage issues in Word documents I receive. I have frequently come across niggles when using Collections, Scripting.Dictionaries or ...
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Geode Contents Predictor StardewValley Mod
The goal
I really enjoy the game Stardew Valley. One of the things that the game has are geodes. Much like real-world geodes, these geodes can be cracked open, and you can find some fun things inside....
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Manage Excel Styles with VBA OOP Approach (Follow up)
This is a follow up to this question
Code incorporates Mathieu's comments and it works. As some parts of the review left some code to my knowledge, I ask for another review to see if I implemented ...
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142
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Manage Excel Styles with VBA OOP Approach
I want to manage the Excel Styles in a more flexible way with bulk actions and at the same time improve my newly acquired OOP concepts.
Objectives:
Load the current Styles list (name and type=...
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954
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Drag and drop selected array items in Javascript
I've written a function that moves selected items from a list into a new position. I've found that in order to do this, I need to retain the original 'index structure' of the array. The way I've done ...
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104
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Interface and inheritance; creating download types for a download manager
I'm creating a download manager in C# (in combination with Unity 2019.1.8, running the .NET 4.x equivalent (MONO) scripting back end). To accomplish this I decided to start using interfaces and class ...
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128
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Parcel size classifier [closed]
I submitted a technical assignment for a job interview process and I am stressing out wondering if my submission was any good. I would like to learn and be a better developer, so please give me ...
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148
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Factory pattern for creating embossing machines
I'm working on a program that creates a file for a specific embosser machine (machine that creates plastic bank card for example). I have 3 embosser machines and all of them create different files. ...
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CandidateArchive for model-assisted multi-fidelity global search algorithm
For my research I'm working on global search methods where a candidate solution can have it's fitness (=score) evaluated in multiple fidelities (=accuracy levels). The goal of the ...
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Displaying IP addresses in Go using Stringer interface
I am trying out some Go code examples (while coding a private project) to get more "in-depth" knowledge about the language.
I have come across an exercise from the Go Tour website about displaying ...
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46
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proper structure of classes using interface classes [closed]
Given the following two interfaces what would the proper way to set up the two actual classes?
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224
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Mario Party Snake and Ladders Board
Context
Was inspired from this LeetCode post to do my own System Design exercise of the common Snake and Ladders problem. As I was writing the code Mario Party kept coming to mind so I added a little ...
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Rendering elements (which can change numbers) using jQuery
Currently when the user selects some tags in my app I generate them in a function, like this:
...
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Infinite and countdown counters
I'm refactoring my scheduler and for one of its triggers I need an endless counter that would automatically restart. Since this is a simple and very common task I don't want to ever have to implement ...
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Simple Serial Port Windows Interface
I implemented a very simple blocking uart interface. Most of the serial instruments I interface with are master/slave and I have to wait on data to proceed forward. I am contemplating add some ...
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House plan design (Head First C#)
I've been working through the book Head First C# and this is an exercise from chapter 7, which is about interfaces and abstract classes.
Note that the class design was mandated by the authors, I'm ...
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Writing to a file in Golang across concurrent go routines
I've been reading around how golang writes to a file, and this stack overflow question and this reddit question highlights the fact Go doesn't gurantee atomicity when writing to a file system. ...
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Functional List in C++ [closed]
This is rather toy example of immutable datatype in C++. I've tried to follow functional languages like Scheme, Racket - making list as a cons cell: list is list or is empty.
...
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Service for generating faked objects
I'm using the Bogus library to mock up some data for testing.
This is my main method demonstrating how the faking service should be used:
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Proper naming for objects which have a position and bounds on a plane
I have an interface which is for an object which has bounds in a 2D plane.
...
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answer
288
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Handling related generic type parameters
In answering a question on StackOverflow, it occurred to me that a more generic version of GroupBy for C# that delegated membership in each group to a class could ...
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An interface for designing Arduino code [closed]
Writing code could be divided into three parts.
1.Interface structure
At this stage programmer should describe all the devices used in his project. Of course, only those of them which Arduino ...
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ChangeCalculator for calculating money denominations in change
I'm doing some exercises in OOP and I just created a program that calculates amounts of denominations in a change at the shop. So, let's say something costs 10, I give 25.30 (for some reason), so I ...
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91
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"Human" interfaces with two implementation classes
The Helloworld class executes all of the methods. Human is the interface, and Nate & <...
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Catching missing attribute errors sooner in Python using strict interface specifications
I use Python daily for long-running simulations (yes, very very optimal, I know). As you could probably guess, my coworkers and I have issues with simulations running for several minutes before ...
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Using a wrapper on a primitive as a generic for an interface used for Java lambda
I apologize for that title, lol.
I have a Java method that I'm writing where I want to be able to pass in an array of Objects and two interfaces that will be used for lambda expressions that specify ...
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