Questions tagged [enum]

A data type consisting of a set of named values called elements, members or enumerators of the type.

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Enum Class in Fortran

I tried to implement something like a C++ enum class in Fortran. That means it should be typesafe and scope bound. (No comparison between integers and enum values ...
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Enum union in Python

This is a snippet of code written in Python 3.9 to implement the concept of "enum unions": an enum made up of several sub-enums whose set of members is the union of the sub-enums' members. ...
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Efficient implementation of comparison operators for cards in a poker simulation

Just as a learning exercise, I am implementing a poker game simulator. I am purposefully not searching for ready made tutorials showing how to do this, relying mostly on the python docs - that way I ...
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1answer
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Defining a finite set of instances of a class to check against [closed]

I have a Type class that will have many instances. I get the instances from a web service. The Type class has a ...
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I want to clean up this console app calculator (VB.net)

Getting started in VB.net I've written this console calculator based heavily off Nicholas Dingle youtube channel (in case it looks familiar). What I want to do is have a separate sub called ...
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Self Running iterable state machine with Enums in Java

During development I needed to design a state machine with decision which runs to completion and performs state transition without the need to wait for events. So i come up with the following ...
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1answer
204 views

Fast API path parameters from Enum Class

from enum import Enum from fastapi import FastAPI app = FastAPI() Hi Defined a route and a Enum Class for the same but the Enum Class looks ugly. ...
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1answer
318 views

Compare List to Enum Where Contains Any

I have a List that I want to compare to an Enum. If a.Value is found in the Enum we return <...
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Use case of nesting an enum into a struct

At our office there is this piece of code (the original author isn't employed anymore, so I can't ask him). Does anybody have an idea, what he did there? Is there any advantage of using this struct <...
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Code for sorting items in recyclerView

I'm have recyclerView which is needed for displayed for show list of my audio records. I added the ability to sort my audio records. Please take a look at the code that I use for sorting and tell me ...
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1answer
159 views

C++17 enum macro with to_string operator

I created a simple enum macro that creates a to_string method for the enum. This has been done before, but my version is designed to compile quickly. From what I ...
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1answer
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Would my implementation of this enum pass?

I have a feature with feature flagging enabled, basis the condition I want to load different pages in my screen, to achieve this I have the following enum: ...
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2answers
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List Filtering Code

I am developing applications for android. In my application, the user can add information about his weight and watch the progress of weight change. I decided to add filtering of the elements according ...
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279 views

LazyEnum with validation

Motivation In the standard Python library enum, a subclass of Enum would create all its members upon class creation. This can ...
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Use Python Enum to implement residue ring and multiplicative residue group

I have implemented the integer residue ring \$ \mathbb{Z}/m\mathbb{Z} \$ and the integer multiplicative residue group \$ (\mathbb{Z}/m\mathbb{Z})^* \$. Functionalities include: In \$ \mathbb{Z}/m\...
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1answer
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Enum conversion to Enumeration class with small Business Logic inside

I had old enum, I converted it to Enumeration class and added one method inside (isValid). I am not sure if it is good approach ...
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Enum in PowerShell Class

I am playing with learning PowerShell classes, and I have a validation situation that kind of lends itself to Enums, as shown in the first example. With Enum ...
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1answer
796 views

Macro to generate an enum and an array of strings

Often when I find myself working with magic number enum values and I want to know what they represent, so I create an array of strings in order to print out their label. This macro automates that ...
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Coloring weekdays with enums

My aim is to assign a color to each workday in a week. So if a user enters a day as a str, then I can know which color it should have. Because colors and workdays ...
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Better approach on handling unexpected string upon converting it to the enum value

I have Grade enum and there is a static method to convert a string value to the particular enum value. ...
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Create a 2 way mapping to allow you to stringify enums or map one enum to another

I've created a class that creates key->value pairs but also value->key pairs - i.e. a reversible hash-map. This is because I want to be able to switch between corresponding members of 2 enums ...
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1answer
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Octave classdef enumeration workaround

AFAIK Octave still does not support enumerations, so I've done my best to write a workaround. The question is if there is something missing in code below, or maybe something can be improved? The ...
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Opposite access to enums

Consider I have many enums (Java) that looks somewhat like this: ...
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1answer
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Cookie value to enum

Users can have a Cookie called lang that contains either the value "default=1" (English) or "default=2" (French). This cookie is used to determine their preferred ...
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1answer
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Java enum-based factory to calculate entry parameters

I want to create a factory to return all Source instances that match given entry parameters- that is, I want to iterate through some Collection of objects and for each entry check boolean method. I ...
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1answer
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Ranges of enum members that dwim

Inspired by this blogpost I decided to try and make it possible to have ranges of enum members that dwim, aka. that contain the actual members and not a stringified ...
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Reference enum values in Angular template without aliasing the enum type

Is there a way to improve this code? I'd like to use the enum type PaymentMethoddirectly in the angular template without renaming it to ...
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1answer
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The most elegant way to locate two enums

I have situation where user has got options to select, and after selected any option will appear next options. For example : 1 - Add car 2 - Add motorcycle. 3 - Print cars 4 - Print motorcycles And ...
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1answer
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overload c++ enum class operators and enable check value set

I use c++ 11 enum class usually instead of the old enums because many enums can contain the same value but as known they don't have the bitwise operators out of the box so we should define them ...
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Distinguish between different types of log items in a dictionary by their key

My logging adapter is using a dictionary for storing data that is passed from middleware to middleware. It is a one-liner: ...
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Bouncing map back into its bounds, after user dragged it out

Users like exploring maps, seeing all that is around. However they tend to go too far. To prevent the map from getting lost to the user it bounces back into the set bounds, as defined by a rectangle. ...
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Emulating a C++ enum class C++ in C

I am trying to emulate a C++ enum class in C and the code works as I expect. I used this code as indicated on Stack Overflow. ...
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1answer
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Using enum for singleton implementations to choose way of doing something

I have this service that reads emails from a mailbox as they come and I want to extract its contents in a map structure. For now I am interested only in the actual email (no images or attachments). I ...
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1answer
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Two ways to implement DND type abilities

I am creating a game in Java that uses the DND model for a lot of its components. I've hit a roadblock when it comes to creating and implementing abilities. I have ...
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Client wrapper for sending data to a downstream process

I am building a Python client for an alert process engine. The users can use this client to publish and clear the alerts. The client exposes two methods publish and clear to the users. These methods ...
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771 views

General purpose replacement for enum with FlagsAttribute

Enums with the FlagsAttribute have the disadvantage that you need to be careful when assigning their values. They are also inconvenient when you would like to allow ...
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1answer
280 views

Enum for handling network request errors in Swift

I'm working on a new API written in Swift 5 and I wanted to play with the new Result. I wanted to know what you guys think about this syntax: ...
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1answer
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API for multiple printer attributes [closed]

I have network printers which have different attributes (e.g. supported network protocols, languages, status, print modes). ...
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1answer
520 views

Swift function to find a specific set of combinations of 3 digits within a larger integer array

I asked this question on Stack Overflow and was directed here. I'm working on a function that will help me quickly find all the upper structure triads (3-note chord) that I can add to a 4-note 7th ...
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Java Swing Exercise: BMI Calculator

This is my first question here and this is my working Body Mass Index Swing Calculator. Any improvement or recommendation is welcome. ...
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1answer
270 views

Get elementary values from a flagged enum

I created a little function that returns the elementary values from a flagged enum. By "elementary" I mean the values that are powers of 2, excluding any combined enum values. I was a bit surprised I ...
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1answer
199 views

Enum class for weight units

I have some enum classes for units, like Weight units (KG and LB). I am translating the code to Qt C++ from Java, and I'm wondering what the best way to do this is as enums cannot have constructors in ...
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1answer
244 views

Enhanced C# Enumeration / `enum`

I am developing my own kind of Enumeration like SmartEnum but trying to prevent the user to provide a recursive-ish type definition like below: ...
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1answer
132 views

Playing card class, written using enums

I wrote a card class a while back in this post here: Previous Question I know it has been a long time but I recently came back to the project and wrote it using an enum as suggested in the answer to ...
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1answer
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C++ API design - Should I pass enums as method parameters [closed]

I have two methods which are GetMinimumSize() and GetMaximumSize(). They return the maximum size of the window, and they take ...
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3answers
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Simple boolean gate with two TriState inputs

As part of a code review I came across this isDummy(a,b)-Method and the question, whether it is more readable as a conjunction, or a disjunction: Original snippet: ...
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1answer
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Image pixel-editing class with an enum for colors

I'm creating an image class that can be used by other classes to create visualizations of data. The class doesn't need to be complicated as the classes will be editing the images pixel by pixel. The ...
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1answer
44 views

Avoiding the use of ordinal() in an already-deployed enum

While reviewing a PR, I found an enum being used like this: ...
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1answer
53 views

Adding additional attributes to an Enum object

I have used Enum objects before in PHP as shown here. However, I often find it's a requirement to have further attributes or metadata available on the instances. I came up with the example solution ...
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1answer
153 views

C++ class for a flag register in a Chip8 emulator

In order to learn C++ I decided to code a Chip8 emulator following a tutorial. When I came across the idea of a flag register and decided it would be fun to implement in order to get familiar with ...

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