Questions tagged [properties]
A property, in some object-oriented programming languages, is a special sort of class member, intermediate between a field (or data member) and a method. Properties are read and written like fields, but property reads and writes are (usually) translated to get and set method calls.
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Coroutine-based two-in-one properties
Over the holidays I played around with coroutines and their use as two-in-one getter and setter methods:
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(de)serializing c++ object almost automagically
Here's one way to solve the serialization problem in c++20, using a json library:
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Section 2: Classes - Design a StackOverflow Post
Design a class called Post. This class models a StackOverflow post. It should have properties
for title, description and the date/time it was created. We should be able to up-vote or down-vote
a ...
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Property caching
Trying to figure out how to efficiently cache property calculations with dependency tracking to invalidate the cache. Here is the syntax I have at the moment (one ...
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1answer
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Minimal Property system in c++17
So I needed to represent by objects in terms in ini format and change their values from the ini as well, so I thought why don't implement a property system for this. I want it to be bit fast so I ...
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1answer
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WPF BindableProperty<TValue> to Reduce Boiler Plate
I'm sure anyone who has used WPF is familiar with the irritating boilerplate code surrounding properties, usually of this form.
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Change tracking POCO entities
Description
In a time where thin clients, web browsers, web services and micro services are prevalent, we tend to forget we still have to deal with thick and smart clients. Many applications in B2B ...
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1answer
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Tracking which entity properties have changed
There are a number of topics pertaining to entity change tracking. All the ones I've seen involve either 1) notifying when a property has changed or 2) merely determining whether or not an entity is ...
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javascript property extractor optimisation
This is a very simple nested property extractor. I wonder if it can be optimised further?
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1answer
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C++ bare getter setter with dispatch
I am trying to achieve a getter/setter behaviour that will reduce code in C++. The interface I would like to achieve is for example:
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1answer
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Python decorator to support static properties
Classes in Python do not have native support for static properties. A meta-class can rather easily add this support as shown below. Are there any problems programmers might experience if they use this ...
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1answer
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Create a csv of file attributes recursively from a directory parameter in PowerShell
I'm a bit new to PowerShell (version 5) and was wondering if there are any improvements I could make to the following script. Any suggestions for style, code, etc. are all welcome.
The script creates ...
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If non-array property exists convert it to one and push new value
Is there a simpler/shorter/better way to do this?
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1answer
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Is this a proper way to cancel an onMouseOver which uses setTimeout? (Vanilla JS)
I've got a working solution for an onMouseOver event which rolls over a set of images and replaces them in the element. Due to my lack of knowledge in JS I would ...
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1answer
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IQueryable Extensions working on expression for collection property
Followup to Repository searching code duplication
My goal currently is to make the current implementation of my repository's IQueryable filtering less duplicative. First, I looked into passing ...
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1answer
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Chaining ConstrainableSet<T> [closed]
Based on feedback on my previous question, I made many small adjustments to the code, added more APIs and tried to follow through with delivering on the excellent advice I have received in regards to ...
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1answer
109 views
Constraining a property setter fluently
The below code is aimed at providing you the most amount of control and flexibility with control which value gets set to a property.
I Introduce to you, the ...
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2answers
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Typed properties in Java
I tried to build a "typed" property system in Java and this is what I came up with: first the class Properties that any class can use as an attribute (demo code in the end).
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Factory to instantiate and configure Selenium WebDriver
I, also, need to know whether this is a valid implementation of the factory pattern.
The amount of effort which goes into configuring DriverFactory to simply get a ...
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1answer
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Read a single int from an optional .properties file
I am no newcomer to Java. One thing that confounds me is why it is so messy to load values from .properties files.
I have an application where, if the .properties file is found, then the value if ...
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1answer
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Method to populate a dictionary from properties
I have a class with some properties. In the class I have a method that is "collecting" all the properties in a specific instance of the class to a dictionary, with the properties name being the ...
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Using C# properties for simple operations, where should I draw the line?
Should I be putting Linq statements inside of an objects properties? Is that a best practice or is that a no no? Also if that is ok, where do I draw the line with this? I assume db access is ...
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2answers
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Javascript extend object
I'm looking for a review of the Javascript code which has this specifications:
Given two objects, the function "extend" adds properties from the 2nd object to the 1st object.
Notes:
Add any keys ...
2
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0answers
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Setting many properties in a PHP class
I'm trying to define parameters for my API. It's a super basic one and the first I've made. I'm trying to instantiate my class and set parameters but to me it seems super messy. Is this really the ...
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How to Make Strongly-typed References to Web.Config? [closed]
Let's say I have a configuration file with a property in it:
<add key="LoadedCode" value="L" />
I know I can reference this using the ConfigurationManager:
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2answers
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Class for course information
Here's what the question asks:
Build a class called Course.java. This class should have 4 properties: CourseId, CourseName, Description, and credit hours. Also add the appropriate set and get ...
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1answer
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Class Property Definition to Prevent Unnecessary Database Calls
The challenge I'm facing is creating a class for a Loan object which contains a number of properties, some of which are classes in and of themselves with similar ...
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1answer
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Attempting to make my properties an enum based singleton
I was attempting to implement my first singleton using an enum, was a bit of a struggle for me and I'm not sure if its right and more importantly thread safe?
Property provider enum:
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1answer
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Testing multiple logins using Selenium listed in a property file
Excuse please review my code. I am working in automation testing. I did a automation testing for my login page. I am using selenium with page object pattern. I wrote here my code. I am using java ...
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1answer
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Excel VBA object with validated bounds for an interval
I'm working through a problem I have with Excel VBA. I have two object classes. Class clsLoadStep stores three copies of class clsLoad objects. Class clsLoad simply stores a value and a string stating ...
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Dependent properties in C#
BountyHunter has a secure line named JobLine that provides them with Prey to hunt.
The Prey can be changed at any time, either from the JobLine or changing circumstances that make the bounty hunter ...
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2answers
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Using attributes with properties in asp.net MVC
I have an auto generated partial class in my Model folder with lots of properties and I need to modify some of the setters in these properties(annotate property), to ensure that I don't repeat myself ...
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2answers
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Enum with associated value as stored property in Swift extension
I have a service which connects to server using socket and stays connected,
I used this enum to manage connection state:
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2answers
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Lazily forward properties
I want to have a object where I can reference another object's properties dynamically while they are still considered properties. If I try to do a simple setattr I'll only get the current state when I ...
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1answer
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One method for changing one of the properties
I have a few resources set in my class – coins, diamonds, hearts, enum of these resources names, and method for increasing specified resource. I want to make single "Increase" method for all resources ...
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1answer
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Class to help dealing with files, with lazy properties
I have the following class to help me deal with files:
File class:
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1answer
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Jinja2 template loader
I am playing around with building my own back end with python 2.7 and jinja2/cgi. Originally I was defining some of my environment and loader variables at the top but figured this was not the best ...
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1answer
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Loading configuration properties from XML
I would like a review of the transformation of the first method to the updated one below:
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2answers
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Property value from an asynchronous operation
I have an app which has a session mechanism. When a user creates an account in the app initially, the API returns an access token, the expiry date of that access token and a refresh token which can be ...
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1answer
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Python proper abstract class and subclassing with attributes and methods
The goal of the code below is to have an abstract base class that defines simple methods and attributes for the subclasses. This is part of an application that provides the code base for others to ...
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2answers
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Assigning properties
I am leaving my first job because I always worked alone on projects from my day one, which was both useful but also taught me some bad practices some of which I managed to realize but many others are ...
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1answer
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Copying properties between two classes
I have an ASP.NET MVC 5 app and I map properties between model and viewmodel and vice versa.
I could use automapper to do this but since I don't need mapping rules to convince me to use it as I ...
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2answers
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DataTable to given type T simple mapper
I threw this together and would love any suggestions on how to improve on this simple DataTable to given Type T mapper. Anything ...
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3answers
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Reading properties from file during standalone application startup
I've a standalone Java application, which basically starts and manages two socket servers. I'd like to configure server ports in a .properties file using the ...
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3answers
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Reading and working with a large number of XML attributes
I'm currently facing the problem of unmarshalling a huge number (47) of attributes to a Java object. Changing the format of the XML file to be more structured is sadly not an option.
The following ...
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1answer
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Getting enum values of Pseudo-Enum classes
By "Pseudo-Enum" classes I mean cases where someone's used a class with public static properties to emulate enum behaviour; e.g. as described here.
Per the example below, this is useful for classes ...
4
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1answer
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ViewModel base class supporting property notification, error notification and property value history
I've created a general purpose ViewModel base class in what I believe it's purest
behaviour. It features property notification, error notification and property value history. Please take a look at it ...
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3answers
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Instantiating a property when the required attributes have been set
I have a simple class which holds my product. Someone can add a serial to this product and also a purchase id. On change of the properties, I want to check whether both properties are set, and get the ...
