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Questions tagged [composition]

Composition is the process of combining, or composing, parts of a program into a larger program.

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How to load data with class composition?

Here are my classes : class PriceScale -int ID -float bookingFees -Product product -List periods Class Product -int ID -string name -List priceScales class PricePeriod -DateTime begin -DateTime end -float price -PriceScale…
remi bourgarel
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Angular2 composure

I'm looking into microservices and to be more exact Angular2 microservices. The main idea seems easy enough but it gets complicated as I want to make a composure of different Angular2 apps. What I mean by this, imagine I have 2 apps which I don't…
taigi100
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Javascript Object Composition with assign & Object.create

trying to wrap my head around javascript composition using assign. The property on my base object is unexpectedly being shared between instances. What am I doing wrong? I have... Stat.js: import assign from 'object-assign'; var Stat = assign({}, { …
Robert Lombardo
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Java composition - Constructor

Today I came across composition. From what I understand, for each instance of composition I need to create new object in constructor, like this : public class Human { private String name; private Adress adress; public Human (String name,…
D.Walker
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Java: Is It Better Practice to Return an ArrayList or to Update Directly in Method

Say, for example, I have an array of Object that I will be iterating through in a helper method; in the helper function, I will be extracting and processing the relevant/important information and adding it to an ArrayList. My questions are as…
Tacocat
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How to create composable scopes for plain Ruby arrays

One of the things that I really like about Active Record is its named scopes and being able to chain scopes together to build expressive queries. What would be a similar way to achieve this with plain Ruby Enumerables/Arrays, ideally without…
gingerlime
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Do you extract interface out of any class that can be instantiated?

Is it generally considered a good practice to have every single class (excluding domain models) of your application based off of an interface? Even if the class is called only within your package? Update: Based on the comments, here is a sample…
developer747
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How to integrate two applications as a single application

Hi, I am new to iPhone. I created two separate applications. What I want to do now is integrate the two applications into one. For example, I could show two buttons and clicking the first takes the user to the first application, while clicking the…
Mahesh Babu
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Accessors Composition in ES6 Classes

Let's say I have a Thing class which I want to be both Hideable and Openable. Using a similar approach to Douglas Crockford's object creation through composition, I have been able to "inherit" from multiple classes. This approach does not work with…
evolutionxbox
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haskell, function composition

I need some help to solve a task on function composition in Haskell. I need to write a function that given an Integer n and a list of inner lists of elements, returns the list of n-th element in each inner list. So it would be like: select 2…
Paweł Poręba
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python serialization of composite object

I have the following code snippet: import pickle class Date: def __init__(self, d=1, m=1, y=1): self.Day = d self.Month = m self.Year = y def __str__(self): return str(self.Day) + "-" + str(self.Month) + "-"…
Dr. Debasish Jana
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How to prune an object of some of its fields in Java?

Suppose we have an object obj of type Object such that System.out.println(obj) produces {a=Some text, b=Some more text, c=Even more text}. Now we want to make a new object obj2 that is just {a=Some text} (i.e., the fields b and c are pruned from…
George
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Drawing a picture in Java using composition and inheritance

this is my first post here. I'm a student taking AP Computer Science in high school. For a project, I have to draw a picture of a basketball. Okay, easy enough. The problem is that I have to do this using correct Composition and Inheritance. I can't…
wildeca
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WSO2 API Manager & Web Service composition

Here's the scenario, WS_A and WS_B are Web Services published in different endpoints. WS_A receives personId, makes some processing, logs some data, and returns the name and the lastname of the Person with personId. WS_B receives two Strings name…
DiegoS
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Composition and inheritance in VB.Net

So here is the case. I have class A and B. Class A has a member in it which is Class B Public Class A public _lstB as list (of B) public sub new() _lstB = B.Init() end sub end Class Public Class B public shared sub Init() as…
Programmer
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