Hiring guide for DRAKON-Alice Engineers

DRAKON-Alice Developer Hiring Guide

DRAKON-Alice is a programming language that uses the DRAKON visual language, which was designed to improve readability and reduce errors in software code. It's based on flowcharts and includes iconic symbols for different actions, making it easier for non-programmers to understand. The "Alice" part of DRAKON-Alice refers to its integration with Alice 3D programming environment, enabling users to create 3D animations or games using the visual interface of DRAKON. This combination makes it a powerful tool for teaching coding concepts and logic in an engaging way without requiring extensive knowledge of traditional text-based programming languages.

Ask the right questions secure the right DRAKON-Alice talent among an increasingly shrinking pool of talent.

First 20 minutes

General DRAKON-Alice app knowledge and experience

The first 20 minutes of the interview should seek to understand the candidate's general background in DRAKON-Alice application development, including their experience with various programming languages, databases, and their approach to designing scalable and maintainable systems.

Can you explain how DRAKON-Alice is different from other programming languages?
DRAKON-Alice is a visual programming language, it uses graphical elements for programming constructs, making the code easier to understand. It's based on DRAKON language which is designed to represent human friendly algorithms, making it unique.
How would you create a new project in DRAKON-Alice?
To create a new project in DRAKON-Alice, you need to open the program, click on the 'New Project' button, name the project, and then start adding diagrams to it.
What are the main components of a DRAKON diagram?
The main components of a DRAKON diagram are the header, silhouettes, and footers. The header contains the start point, silhouettes represent the flow of the program, and the footer is the end point of the diagram.
Describe the difference between DRAKON and DRAKON-Alice.
DRAKON is a visual language designed for the representation of algorithms, whereas DRAKON-Alice is a programming language based on DRAKON which allows for the creation of executable programs.
How would you add a silhouette in DRAKON-Alice?
To add a silhouette in DRAKON-Alice, you select the silhouette type from the toolbar, then click on the diagram where you want to place it, and finally adjust the properties in the property editor.
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What you’re looking for early on

Does the candidate have a solid understanding of the DRAKON visual language?
Has the candidate demonstrated good problem-solving skills?
Is the candidate familiar with the Alice programming language?
Can the candidate work well in a team?

Next 20 minutes

Specific DRAKON-Alice development questions

The next 20 minutes of the interview should focus on the candidate's expertise with specific backend frameworks, their understanding of RESTful APIs, and their experience in handling data storage and retrieval efficiently.

What are the key features of DRAKON-Alice?
DRAKON-Alice has several key features including visual programming, graphical representation of algorithms, automatic layout, and the ability to create executable programs.
How would you debug a program in DRAKON-Alice?
To debug a program in DRAKON-Alice, you would use the built-in debugger. You can set breakpoints on the diagram, run the program, and the execution will stop at the breakpoint.
How would you handle errors in DRAKON-Alice?
In DRAKON-Alice, you can handle errors by using the 'On Error' silhouette, which allows you to specify what should happen when an error occurs.
Describe the difference between the 'Action' and 'Question' silhouettes in DRAKON-Alice.
An 'Action' silhouette represents a command or operation, while a 'Question' silhouette is used for decision making in the program and has two exits, 'Yes' and 'No'.
How would you use the 'Loop' silhouette in DRAKON-Alice?
The 'Loop' silhouette in DRAKON-Alice is used for repeating a block of code multiple times. You place the code you want to repeat inside the Loop silhouette and specify the condition for repetition.
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The ideal back-end app developer

What you’re looking to see on the DRAKON-Alice engineer at this point.

At this point, a skilled DRAKON-Alice engineer should demonstrate strong problem-solving abilities, proficiency in DRAKON-Alice programming language, and knowledge of software development methodologies. Red flags include lack of hands-on experience, inability to articulate complex concepts, or unfamiliarity with standard coding practices.

Digging deeper

Code questions

These will help you see the candidate's real-world development capabilities with DRAKON-Alice.

What does the following DRAKON-Alice code do?
var x = 5;
var y = 10;
var z = x + y;
This code declares two variables x and y, assigns them the values 5 and 10 respectively, then adds them together and assigns the result to a new variable z. It then prints the value of z, which will be 15.
What will be the output of the following DRAKON-Alice code?
var a = 'Hello, ';
var b = 'World!';
var c = a + b;
This code concatenates two strings 'Hello, ' and 'World!' and assigns the result to a new variable c. It then prints the value of c, which will be 'Hello, World!'.
What does the following DRAKON-Alice code do?
var arr = [1, 2, 3, 4, 5];
var sum = 0;
for (var i = 0; i < arr.length; i++) {
  sum += arr[i];
This code declares an array of integers and a variable to hold the sum. It then uses a for loop to iterate over the array and add each element to the sum. Finally, it prints the sum, which will be 15.
What does the following DRAKON-Alice code do?
var counter = 0;
function increment() {
This code declares a counter variable and a function to increment the counter. It then calls the increment function twice and prints the value of the counter, which will be 2.

Wrap-up questions

Final candidate for DRAKON-Alice Developer role questions

The final few questions should evaluate the candidate's teamwork, communication, and problem-solving skills. Additionally, assess their knowledge of microservices architecture, serverless computing, and how they handle DRAKON-Alice application deployments. Inquire about their experience in handling system failures and their approach to debugging and troubleshooting.

What are the advantages of using DRAKON-Alice for algorithm visualization?
DRAKON-Alice offers a clear and intuitive graphical representation of algorithms, making them easier to understand. It also allows for interactive execution of the algorithm, which aids in learning and debugging.
How would you implement recursion in DRAKON-Alice?
To implement recursion in DRAKON-Alice, you would create a subroutine with a 'Call' silhouette that calls itself. You would also need to add a condition to break the recursion.
Describe the difference between the 'Call' and 'Insert' silhouettes in DRAKON-Alice.
The 'Call' silhouette is used to call a subroutine, while the 'Insert' silhouette is used to insert another diagram at that point in the code. Both allow for code reuse, but 'Call' is for calling code that might be used in multiple places, while 'Insert' is for including a diagram that is only used in that one place.

DRAKON-Alice application related

Product Perfect's DRAKON-Alice development capabilities

Beyond hiring for your DRAKON-Alice engineering team, you may be in the market for additional help. Product Perfect provides seasoned expertise in DRAKON-Alice projects, and can engage in multiple capacities.