A special type of subroutine called at the creation of an object.
5
votes
3answers
333 views
Parsing a complex number using regular expressions
Requirements were to create a constructor for a complex number, that receives a string. For example: \$3+5i\$. The regex extracts positive or negative numbers from the string with optional decimal.
...
-5
votes
0answers
26 views
How can call both :this() and :base() in this specific case? [closed]
I have a base class EntityModel (it needs to work with a database)
...
1
vote
1answer
46 views
Establishing parameters for a sales report, with default boolean and date values
The idea is that I am getting the params from a GET request in the form of a Hash (symbol→str) and I want to transform them into dates and booleans. For that ...
3
votes
2answers
85 views
Dynamic class instancing (with conditional parameters and methods) based on a dictionary
In a RPG game I'm developing, after building a base Weapon class, instead of having many subclasses of Weapon, I want the ...
15
votes
6answers
2k views
Constructors for a class to represent a price in € or $
I'm using a method to make initialize the attributes of my objects, and this method is called from both constructor.
What it does is, if no correct currency has been passed, choose € by default.
I'm ...
3
votes
2answers
178 views
Follow up - Creating Inheritance hierarchy using function constructor
In continuation with this question,
Animal class has four fields:
name
sound
...
8
votes
1answer
106 views
Creating Inheritance hierarchy using function constructor
Problem statement
You need to create the Animal base class having four fields:
a. name
b. ...
10
votes
1answer
83 views
A classy wine collection - Construction vs. Initialization
The following is for a chapter exercise in C++ Primer Plus, 6/e by Stephen Prata, for the first part of Chapter 14 which deals with code reuse through composition. The problem is to implement a ...
1
vote
2answers
78 views
Reducing code complexity for UsergridClient constructor
I'm initializing a class in JavaScript with a bunch of complex property checks. Codacy is showing that this is bad design and recommends reducing cyclomatic complexity.
I'm at a loss for how to ...
3
votes
2answers
70 views
Dynamically creating elements with an object constructor
Just experimenting with various Javascript techniques and was wondering if the code below is valid and if there are any disadvantages to using this technique to create html tags from JS object ...
5
votes
6answers
146 views
__repr__ for a binary tree whose constructor has default arguments
I recently have been working on a BinaryTree class, and looked into creating a proper __repr__ which when eval'ed would recreate ...
3
votes
1answer
94 views
Constructing NewsArticle objects from a database table
This class seems to be able to represent the data stored in any possible database table:
...
8
votes
2answers
398 views
Declaration of bloatedness: the class that knew too much?
I've already expressed concerns about this type's constructor, and I've sort-of* implemented the changes suggested in the answers I got there.
Recently I added even more parameters to that ...
2
votes
1answer
31 views
In a Content Pane mouse movements are logged and shown
I was trying to learn to develop plug-ins in Eclipse and after following the tutorial provided with Eclipse, tried to expand the code by writing a short Java class to track and display mouse movements ...
0
votes
1answer
63 views
YUIDoc syntax for optionally static constructor
In JavaScript, I wrote a class that can be optionally instantiated with the new keyword, but can also be called statically as well. What is the best way to ...
-4
votes
2answers
141 views
Is the Copy-Swap Idiom implemented here correctly? [closed]
Is the Copy-Swap Idiom implemented here correctly?
...
0
votes
1answer
177 views
Rule of 5 - C++11 [closed]
Source/Context:
What is the copy-and-swap idiom?
Rule-of-Three becomes Rule-of-Five with C++11?
The C++ Programming Language 4th Edition June 2013 -
Section 17.1 Introduction 483
...
2
votes
1answer
96 views
Book constructor pattern
I am learning how to do object-orientated programming in JS. In particular, I am learning about the constructor pattern.
In an attempt to exercise what I have been learning, I made this:
...
7
votes
4answers
4k views
Kelvin-Fahrenheit-Celsius temperature converter
I am curious if it would ever be in good practice to omit constructor definitions from a class. Here, the intention of the Temperature class is to simply convert between one temperature scale to ...
3
votes
2answers
168 views
Store open days and times
Currently I'm developing my business entities. I feel that the structure is a tad cumbersome.
What I mean is that a store on a particular day can have different open and closing times. So it's not ...
1
vote
2answers
465 views
Utility class for an HttpURLConnection
I am creating a utility class to do an HttpURLConnection. I want to make this class generic as in I pass the URL and the POST params. It works with any range of ...
1
vote
1answer
830 views
A binary tree , its copy constructor and assignment operator
I implemented a binary tree in the following code. Its node's copy constructor and assignment operator should copy itself and all its descendents. Similarity a node's destructor should delete itself ...
3
votes
1answer
220 views
Making a copy constructor more flexible for ADT queue
I have constructed a copy constructor for an ADT queue. The copy constructor works fine. I would want to improve my code, but I don't really know how to shorten it to make it more flexible.
...
2
votes
4answers
368 views
Rule Of Three for a Coordinate class [closed]
I just recently got back into C++ and did a quick and simple exercise in the Rule of Three. The code for the copy constructor, overloaded assignment operator, and destructor follows below for my class ...
2
votes
1answer
53 views
Elegant way of processing an “options” parameter
In this constructor function I'm assigning everything to the proper variables. For the third parameter it accepts an options argument that contains the optional ...
3
votes
1answer
155 views
Instantiating a kind of NumPy array
I am creating a class object which must inherit from numpy ndarrays. I perform an isinstance check and an ...
6
votes
1answer
425 views
Applying the copy-swap idiom to humans and employees
I came across this post which explains the copy and swap idiom. However I could not find this idiom applied to classes that have base classes. Following is my attempt of a copy-swap idiom applied to ...
9
votes
1answer
96 views
Class that represents starting points and endpoints of a game
I am creating my first HTML5 game using JavaScript and Phaser framework. I have a class (or more accurately a prototype) called MajorPoint that represents the ...
2
votes
3answers
164 views
ADT for a TVM calculator
I wanted to get some criticism for the below ADT. This is just a basic ADT that will be fed into a TVM calculator. Main purpose is to have it initialized and correct for input errors.
Full ...
1
vote
1answer
97 views
1
vote
3answers
76 views
Initializing object by settings implemented as a class [closed]
Here is the story.
We have the BankTerminalSettings class.
It has many properties:
...
2
votes
0answers
125 views
handle drag and drop operations
I've come up with the following code to handle drag and drop operation. It's composed of a constructor function that returns an objects with methods to attach to event handlers.
Notes about this ...
1
vote
1answer
287 views
Prompting the user for employment information
I have created a simple program in which the user is prompted for various details about their employment. In my Employee.java file, I have all the methods.
Employee.java:
...
6
votes
2answers
123 views
File class and large constructor
I have some dispute with a colleague. I work with some REST-service, from which I get always same type data.
...
3
votes
3answers
302 views
Triggering editing mode for a form
I think that my code isn't perfect and I need a help to understand how to optimize it.
In my application I have a main form and several forms for data editing.
The user can:
Add a new item
Edit ...
7
votes
3answers
596 views
Parameterised Constructors
Finally, Parameterised Constructors are possible in VBA.
Background:
One rainy day, I came up with an idea: take a static class and expose one property as default (like it was done in the Reverse ...
7
votes
4answers
131 views
Avoid if/else in constructor - NavigableMap?
I have the following code, based on the input to the constructor I need to initialise some values which are wrapped in a simple POJO. These values are constant as you can see.
However I don't like ...
3
votes
1answer
2k views
Dependency Injection into an Abstract Class
Me and another developer have recently forked and taken over an abandoned, open-source project. I have also been reading articles and watching videos by Misko Hevery.
When I was reading through the ...
2
votes
1answer
178 views
Reading and storing values from JSON
I have a class ConfigFile that reads some values from a JSON using Boost and stores them in variables. Everything is done in the constructor:
...
6
votes
3answers
1k views
Count PDF pages in constructor
I have an object that represents a PDF file. In the constructor, I pull out various information about the file name and make it available via properties:
...
5
votes
2answers
3k views
Storing a message from a queue
I am doing a code review and I have encountered a class in an application that is throwing an exception in the constructor:
...
7
votes
2answers
494 views
Should I set a license in the constructor or a static constructor?
We are using the Aspose PDF library to work with PDF files. Aspose requires the license to be set once per process. Accordingly, I have created the following common static method that sets the ...
4
votes
2answers
305 views
Exercising in copy constructors and assignment operators
I've just created an implementation of array to train myself in copy constructors, assignment operators, and exception safety. Please look at this code and tell me what is wrong here.
...
4
votes
1answer
54 views
Zip-like construction of objects from parameter collections
This little function can make object creation much easier.
Sometimes you need to switch between representing your data as objects vs. having the members in separate containers.
Example:
...
18
votes
5answers
867 views
When a constructor calls a helper function, should the helper mutate the object or return part of the object?
I have a private method that is called from the constructor to instantiate a bunch of objects.
I can do it two ways.
...
7
votes
2answers
1k views
What is the advantage/disadvantage of using default initializer for private fields?
Let's compare the following code:
1)
...
9
votes
2answers
597 views
Long constructors, inheritance, class method constructors
My class takes functions as a parameter. There are 6 of them, along with numerous other parameters. Almost all of the fields have default values.
It also has a class method that creates an instance ...
1
vote
1answer
64 views
Framework constructor
I'm working on my framework constructor. First I tried to look into jQuery and understand it, but it's so out of my league. Instead I googled and put this code together. Though there aren't many posts ...
3
votes
2answers
69 views
Making this login javascript code more organized and more competent?
I have this basic javascript that using a constructor, validates the form where the login fields cant be empty. All this WITHOUT using any js libraries. So far I have come up with this...
...
1
vote
2answers
126 views
