Hiring guide for DRAKON-Scala++ Engineers

DRAKON-Scala++ Developer Hiring Guide

DRAKON-Scala++ is a high-level programming language that combines the simplicity of DRAKON and the power of Scala++. It is an evolution from its predecessor, DRAKON, developed by Russian scientists in the late 20th century for space program purposes. The addition of Scala++, an object-oriented language designed to express common programming patterns in a concise manner, enhances its efficiency. This unique combination allows programmers to create clear and maintainable code with improved readability. Its use spans across various industries due to its versatility and adaptability.

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

First 20 minutes

General DRAKON-Scala++ app knowledge and experience

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

What are the main advantages of using DRAKON-Scala++?
DRAKON-Scala++ enhances code readability and maintainability, it reduces complexity and increases efficiency, and it provides a visual representation of the code flow which is very useful for debugging and understanding the program logic.
How would you implement a loop in DRAKON-Scala++?
In DRAKON-Scala++, loops can be implemented using the 'Loop' icon, which represents a cycle of actions that will be repeated as long as the condition is true.
Describe the difference between DRAKON and traditional flowcharts.
DRAKON prioritizes vertical orientation for better readability, it has a strict and clear structure, and it uses a limited set of graphical primitives compared to traditional flowcharts. This makes DRAKON diagrams easier to understand and follow.
How would you handle errors in DRAKON-Scala++?
DRAKON-Scala++ has an 'Exception' icon to handle errors. When an error occurs, the program jumps to the 'Exception' icon and executes the actions defined there.
What are the key principles of DRAKON?
The key principles of DRAKON are simplicity, clarity, and minimization of cognitive load for the programmer. It aims to make the program logic easy to understand and follow.
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What you’re looking for early on

Has the candidate demonstrated a solid understanding of DRAKON visual language?
Does the candidate show proficiency in Scala++?
Can the candidate solve problems and debug issues in a DRAKON-Scala++ environment?
Is the candidate able to effectively communicate technical concepts?

Next 20 minutes

Specific DRAKON-Scala++ 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.

How would you implement conditional logic in DRAKON-Scala++?
Conditional logic in DRAKON-Scala++ can be implemented using the 'Question' and 'Choice' icons. The 'Question' icon represents a condition, and the 'Choice' icon represents different paths of execution depending on the condition.
Describe the difference between DRAKON-Scala and DRAKON-Scala++.
DRAKON-Scala++ is an extension of DRAKON-Scala with additional features and improvements. It provides better support for object-oriented programming and includes enhancements for better code generation and debugging.
How would you create a function in DRAKON-Scala++?
A function in DRAKON-Scala++ can be created using the 'Action' icon. You define the function name and parameters, and then you define the actions that the function will perform.
What are the guidelines for creating a DRAKON diagram?
The guidelines for creating a DRAKON diagram include keeping the flow from top to bottom, using a limited set of icons, avoiding crossing lines, and making the diagram as simple and clear as possible.
How would you implement recursion in DRAKON-Scala++?
Recursion in DRAKON-Scala++ can be implemented by creating a function that calls itself. You need to ensure that the recursion has a base case to prevent infinite recursion.
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The ideal back-end app developer

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

At this point, a skilled DRAKON-Scala++ engineer should demonstrate strong problem-solving abilities, proficiency in DRAKON-Scala++ 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-Scala++.

What does this simple DRAKON-Scala++ code do?
def main(args: Array[String]) {
  println("Hello, World!")
This code prints the string 'Hello, World!' to the standard output.
What will be the output of the following DRAKON-Scala++ code?
def add(x: Int, y: Int): Int = {
  return x + y

println(add(5, 7))
This code defines a function that adds two integers and then prints the result of adding 5 and 7. The output will be '12'.
What does this DRAKON-Scala++ code do with the array?
val arr = Array(1, 2, 3, 4, 5)
val arr2 = arr.map(_ * 2)
println(arr2.mkString(", "))
This code creates an array of integers, doubles each element in the array, and then prints the new array as a comma-separated string. The output will be '2, 4, 6, 8, 10'.
What does this DRAKON-Scala++ code do related to threading?
import scala.concurrent.ExecutionContext.Implicits.global
import scala.concurrent.Future

val future = Future {
  println("Future's Result")

This code creates a Future that sleeps for 5 seconds and then prints 'Future's Result'. The main thread sleeps for 10 seconds, so the Future has enough time to complete.

Wrap-up questions

Final candidate for DRAKON-Scala++ 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-Scala++ application deployments. Inquire about their experience in handling system failures and their approach to debugging and troubleshooting.

Describe the difference between 'Silhouette' and 'Free-form' in DRAKON.
'Silhouette' is a strict form of DRAKON diagram with a clear structure and rules, while 'Free-form' allows more flexibility and creativity, but it may be harder to understand and maintain.
How would you handle concurrency in DRAKON-Scala++?
Concurrency in DRAKON-Scala++ can be handled using the 'Parallel' icon, which represents actions that can be executed simultaneously. You need to ensure proper synchronization to avoid race conditions.
What are the best practices for using DRAKON-Scala++?
The best practices for using DRAKON-Scala++ include using meaningful names for functions and variables, keeping functions small and focused, reusing code through functions and objects, and regularly reviewing and refactoring the code.

DRAKON-Scala++ application related

Product Perfect's DRAKON-Scala++ development capabilities

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