Generic programming is a style of computer programming in which algorithms are written in terms of to-be-specified-later types that are then instantiated when needed for specific types provided as parameters.

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61 views

Generic mean function

It seems useful to have a generic function to calculate the mean of all elements in a container, so I wrote one. By default it calculates the arithmetic mean, but should be able to accommodate other ...
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0answers
44 views

Separation of concerns for security checks

I needed a nice typesafe way to implement security checks for various domain objects and actions that can be performed on them. I had an idea how to do it, so I implemented it as a simple proof of ...
6
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1answer
177 views

Cast a raw map to a generic map using a method, cleanly and safely in a fail early manner

Casting, instanceof, and @SuppressWarnings("unchecked") are noisy. It would be nice to stuff them down into a method where they won't need to be looked at. ...
3
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1answer
63 views

Get object in a Set that is an instance of a generically specified type

Are there ways to simplify the getLoadComponent(Class<T> type) method? The call ...
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1answer
84 views

RESTEasy client that should use generics

I have written some code using RESTEasy to handle RESTful service calls and parse the response XML into relevant JAXB annotated classes. At the moment I have seperate methods for each return type: ...
6
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3answers
710 views

Simplifying a series of type checks and casts in a generic method

The if/else statements below are not good. How can I improve this method? ...
2
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0answers
77 views

Generic Entity Framework Query in CQRS

I've been working on our application (CQRS and DDD) for awhile now. The application architecture is well layered and thought through. However we are having difficulties in decide where to put the ...
4
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2answers
118 views

Generic equality checker

I use this method to check if two reference types are equal ...
7
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2answers
394 views

Generic cached value class mimicking Lazy<T>

Before I wrote this I searched and found a number of solutions that make use of a caching provider to handle a set of items. I felt that was too cumbersome of an approach and set out to create a class ...
8
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2answers
112 views

Reasonable way to implement “safe” math operations using _Generic?

I've been thinking about a way to make it easier to safely use math operations with C's basic datatypes (e.g. using the CERT C coding standard). So far, I've come up with something like this: ...
4
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3answers
62 views

Idiomatic Scala Generics

I'm working on some Scala problems given here, specifically: ...
2
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1answer
55 views

Convert Extension methods to generic methods

I was looking at some Linq queries with multiple join statements. I was thinking that they could be cleaned up using extension methods that hide away the join / where statements. For example: ...
11
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2answers
324 views

Instantiating a run-time implementation of an interface

Below is my code that was written for the following task (based on an SO question): Given a Java Collection (of N elements) create an ...
14
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4answers
2k views

Reusability vs simplicity in a small game with a set of interfaces

I have a small game I'm working on with a set of interfaces: IHavePosition: ...
2
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2answers
137 views

Converting web-querying classes to a single generic class

I have two classes that do that same thing with different types. I was thinking of using generics (but I am open to all options). QueryPermissions and the ...
9
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2answers
410 views

Generic deque implementation

I implemented a generic deque data structure. Please, review this implementation. Deque.java: ...
2
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1answer
123 views

Many interfaces and lots of inheritance vs few interfaces and less inheritance? [closed]

I have a Visual Studio Solution which has a bunch of Projects in it. One of these projects is called "Services" and is basically the junction point between all remaining projects. When I built it ...
9
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4answers
333 views

Do I need Generics for these node and tree classes?

I want to implement KD tree. I have defined class Node as follows: ...
5
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1answer
78 views

Message Based Communication Design

I'm trying to design an API.NET for some communication purposes with Testing Equipment and I cannot figure out a proper way for designing the architecture. Basically, we have different (physical) ...
4
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3answers
238 views

Refactor C# Linq code to reduce duplication

I currently have the below code: ...
8
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2answers
181 views

C++(11/14) intercalate implementation

I wrote a simple generic intercalate function (that should be semantically equivalent to the Haskell intercalate). ...
4
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1answer
86 views

Is this a good way to deal with this tricky generic situation?

I have a project which should be thought of split into two layers: an IO layer which consists of sensors (input) and effectors (output), and a core layer which contains logic for determining which ...
5
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2answers
259 views

Static Data Helper for an Oracle Backend

What I would like to do is have a method call like: ...
5
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1answer
82 views

Generic property with AOP-functionality in Java

After playing around with Java 8 and Generics for some time, I came across an idea while reading some posts about Apple's new programming language Swift. Swift has AOP-like methods for properties ...
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0answers
52 views

Feedback for a mostly auto-generated generic data layer

I'm trying to make a reusable data layer that is mostly generated from a database via T4 templates. On top of this data layer, I'd like to have WebAPI endpoints for each repository, with most of the ...
2
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1answer
73 views

Generic util method to convert in single map from list of array of Object generally result of JPQL/ hibernate

I have designed a generic method to convert list of array of Objects to result into single map. This is working fine, but I want to check weather a key object is valid key (whether it is overriding ...
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3answers
111 views

Would ignoring generic types to provide default behavior when client uses my default constructor confuse people?

I'm wondering if providing default behavior is ever worth the confusion caused by ignoring generic type passed in. Another question brought up this issue: ...
5
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1answer
44 views

Having children call parent's public events with data generated from a protected event

I don't know that my title describes the code I want reviewed. Hopefully the code is explanatory. I have an abstract parent class with two children. The parent listens to some hardware notifications ...
2
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1answer
748 views

Generic, thread-safe MemoryCache manager for C#

Using this question as a base, and using some of the advice in the answers, I wanted to build out something that would be generic, thread-safe, and easy to use for at least one current and several ...
7
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1answer
122 views

Generic radix sort

This started out with my answer to Radix Sort on an Array of Strings?. Since I intend to write a generic radix sort for my own purposes anyway, I continued a little bit, and here is a version tested ...
5
votes
1answer
108 views

Is there a simpler way to create this Inheritance structure for overriding an internal Generic Type?

I have some code below which is designed for the following purposes: Implement a cache structure which stores cached elements, as well as a method for reloading those elements. Ensure the new ...
7
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2answers
293 views

Generic ArrayList

Can anyone recommend improvements to the compress() method? ...
10
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3answers
433 views

Recursive Fibonacci with Generic delegates

Here is a fast recursive Fibonacci-like for loop. How can it be more readable, and is it possible remove TArgs? ...
4
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2answers
78 views

Pattern for storing object of varying type

I have a situation where I need to store fields of differing types of some data structures along with some similar metadata (The application takes data from one of many sources, some data possibly ...
3
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1answer
118 views

Genericizing PropertyValues

This should be the last iteration for this code. Question 1 Does this approach make sense or am I heading down the wrong path? Question 2 The only thing I can see to make this better is to ...
3
votes
1answer
152 views

Session state wrapper, extending an existing application

I'm adding additional functionality to an existing MVC .net application, and to help prevent or at least reduce repeated reads to the dB I'm dumping a few custom entities in session. I'm limiting what ...
6
votes
2answers
1k views

Empty Interface usage - is this a code smell?

I've recently made a set of interfaces/classes to work with converting a spreadsheet into an object but I utilise an empty interface in my design: So first off I have my interface which defines what ...
7
votes
1answer
141 views

Model simulation using Java annotations

A couple of days ago I posted my code that models systems made up of moving parts. I got several great tips and ideas and here is my latest version. My actions are now methods annotated with @Action ...
7
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2answers
238 views

Game passive skill system

I'm trying to create some easily accessible database of different skills. General idea is that every skill should do something different and be able to act on different things (ex. one skill which ...
2
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1answer
251 views

Delegate that selects a writable property on a generic

In the following contrived example, I have a collection of PropertyManagers that each contains selector and assigner delegates to read from and write to a property ...
6
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1answer
70 views

Monadic Immutable Linked List in the Least Functional Language Evar

I've written a List monad as an example for a related question. This is a rather frustrating experience as I wanted to use Java, which (as of Java 7) still lacks lambda expressions and lacks ...
6
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2answers
109 views

A monad in Java (FriendSpace and People)

After asking a similar question on Stack Overflow, I'm picking up on the answer there to improve my monad. I'm not trying to solve the general case, just come up with one to see how it works. If I'm ...
13
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2answers
500 views

Is this C# 'hack' a bad idea?

As C# doesn't have generic specialisation like C++ template specialisation and I wanted a way to be able to do it, I came up with a little hack that goes a bit like this: ...
6
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3answers
167 views

Factory for classes unknown at compile time

I have a class called Machine. It contains a list of parts and a list of actions. The list of parts will contain instances of the ...
6
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2answers
98 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 ...
8
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1answer
214 views

Cache wrapper - Generics vs Dynamic

I've implemented a common wrapper pattern I've seen for the .NET cache class using generics as follows: ...
1
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1answer
368 views

A genric extension method to filter Linq-EF queries

I have various types of EF entities, all of them have a navigation property called "Employee". When generating reports the user will have the option to filter the report according to the different ...
4
votes
1answer
212 views

Mapping from multiple sources to destination using JMapper

I am using JMapper to map from multiple sources to a destination class. Could you review it and let me know if the code looks OK to you? Please suggest any changes that I can make to improve it. ...
3
votes
3answers
103 views

Forcing type-safe IDs for use with Collections and Maps

Introduction I have a hierarchically nested tree class (like SampleFolder, s.b.) that I want to serialize. The problem arises with the collection of sub items ...
6
votes
1answer
258 views

Genetic C++ programming with Brainfuck

This was a project I worked on for fun that basically uses a genetic algorithm to produce simple Brainfuck programs that output whatever the user specifies. I was just was hoping for criticism of the ...