Anthropometrics of digital design – well known examples or case studies?

An interesting area of study in human factor and ergonomic design is anthropometry, which looks at the size and proportion of the human body.

While this has a very specific application in a wide-range of areas in the design of physical objects, I haven’t come across much of this type of analysis when it comes to the design of physical objects with digital applications (e.g. smart phones) or the design of virtual objects or interactions (e.g. AR and voice control).

I am sure that many of the IoT devices being designed at the moment will follow some of the principles involved, but I am interested to know if there are case studies of the use of anthropometrics to create a better user experiences. Are there any well known examples that has been published?

A similar question with some results is the size of buttons on screens.

What parts does a design system have, how to support development? some documentation with step by step examples uu

I’m just starting in the world of ux, I would like to know what a design system has I have read but I still don’t understand, the only thing I have been able to do is create some components in figma and choose the letter size and message tables but nothing more, I don’t know how to make the grid , so: c I would like to know about the experience of those who have built a design system I want to be able to help the front end. thanks in advance 🙂

What are some real world examples of great unit tests? Links to Github repos welcome

I think the title says it all. I’m learning how to write better unit tests and I think that a great way to do it would be to look at some real, production sofware that has really good unit test written. Can you recommend some examples? The language doesn’t matter.

Are there any good examples or case studies of Project Management SharePoint sites on Modern Experience?

I am looking to implement a PMO site in my tenant and one of the requirements I have is to be able to aggregate project status updates in a dashboard from multiple projects.

We are running in Modern Experience, so I am wondering if there are any examples or case studies if anyone has implemented project SharePoint sites on SharePoint Online?

Previously, I would have used Content Search web parts with stylings. I assume Highlighted Content webpart may serve me here, but I wanted to see if anyone else has done something similar.

How to apply OOP to real world examples without putting all logic in Manager classes?

I’m lately trying to implement a specific problem using an object-oriented approach. I get the main principles and its advantages, but I fail to apply it to a real world problem. Most examples one could find consist of Cats or Dogs being implementations of Animal. These however don’t give me enough understanding how to model below problem regarding another frequent example: a school administration system.

Imagine a school having Students, Courses, Professors, and Notes. My implementation would be something like this:

class Person {     string name;     int age;      Person(string name, int age) { = name;         this.age = age;     } }  class Student extends Person {     double gpa;      Student(string name, int age) {         super(name, age);     } }  class Professor extends Person {     string roomNumber;      Professor(string name, int age, string roomNumber) {         super(name, age);         this.roomNumber = roomNumber;     } }  class Course {     string name;     Professor professor;     Students[] student;      Course(string name, Professor professor) { = name;         this.professor = professor;         this.students = new Student[];     }      void enrolStudent(Student student) {         students.add(student);     } }  class Note {     Course course;     Student student;     double value;      Note(Course course, Student student, double value) {         this.course = course;         this.student = student;         this.value = value;     } } 

Now the Student has a bunch of Notes and we want to calculate its GPA. This could be either straightforward averaging its Notes‘ values or more complex logic using weights and/or ignoring optional courses.

Now my question is: where do we put this logic? Ideally I would have a function double calculateGpa() on Student so you could call student.calculateGpa(), but having this logic on Student would break the SRP in my view. It also does not belong to any other class listed here. A class called GpaCalculator or NotesManager would be another guess but that seems to me too much like moving all the logic away from the domain and into classes that do not represent a real object but just actions (see also this answer).

If that would be the way to go here, why wouldn’t I then just write a pure, static, stateless function in a class called NotesHelper? Creating a manager class to just have one function double calculate(), and using its instance instead of a static function feels to me like making it look like OOP while it isn’t really. I feel like there should be a better approach, probably one I didn’t think of, or maybe I am wrong here. Could you guys give me some pointers?


SRP violation confusion based on examples

I am trying to gain better understanding on SRP and when I was checking out a Pluralsight video by Scott Allen, I saw code like this:

public class DiskBook : Book     {         public DiskBook(string name) : base(name)         {         }          public override event GradeAddedDelegate GradeAdded;          public override void AddGrade(double grade)         {             using(var writer = File.AppendText($  "{Name}.txt"))             {                                 writer.WriteLine(grade);                 if(GradeAdded != null)                 {                     GradeAdded(this, new EventArgs());                 }             }         }          public override Statistics GetStatistics()         {             var result = new Statistics();              using(var reader = File.OpenText($  "{Name}.txt"))             {                 var line = reader.ReadLine();                 while(line != null)                 {                     var number = double.Parse(line);                     result.Add(number);                     line = reader.ReadLine();                 }             }              return result;         }     } 

Now here Diskbook is responsible to manage grades and Statistics class responsibility is to calculate statistics based on grades but this makes me wonder that having GetStatistics method in DiskBook class doesnt break SRP?

Because as per my understanding if there will be some changes inside Statistics class, then I will have to change logic in GetStatistics method which means now I have 2 reasons to change DiskBook class. Clear SRP violation?

Also in .net framework we have DbConnection class which creates DbCommand like below:

public abstract class DbConnection : Component, IDbConnection, IDisposable {     protected abstract DbCommand CreateDbCommand(); } 

I know this won’t be violating SRP since it is designed and created by .net team but I would like to understand why this is not violating SRP and when does it make sense to do something like this?

What is artificial intelligence with examples?

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