Hiring guide for Elan++ Engineers

Elan++ Developer Hiring Guide

Elan++ is a computer programming language that was developed in the 1980s by the French company, Alsys. It is an extension of the Ada programming language, designed to provide additional capabilities for real-time and embedded systems. Elan++ was used extensively in aerospace and defense industries due to its robustness and reliability. The development of Elan++ contributed significantly to the advancement of high-integrity software engineering. Information on Elan++ can be found in historical documents from Alsys and references on Ada's evolution.

Ask the right questions secure the right Elan++ talent among an increasingly shrinking pool of talent.

First 20 minutes

General Elan++ app knowledge and experience

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

What are the basic data types in Elan++?
The basic data types in Elan++ are integer, float, string, boolean, and null.
How would you declare a variable in Elan++?
In Elan++, you declare a variable using the 'var' keyword followed by the variable name, equals sign, and the value. For example: 'var myVar = 10;'.
What is the use of the 'Console' object in Elan++?
The 'Console' object in Elan++ is used for input-output operations. It contains methods like 'readLine()' for reading input and 'writeLine()' for output.
How do you write a loop in Elan++?
In Elan++, loops can be written using 'for', 'while', or 'do-while' statements. For example: 'for(var i = 0; i < 10; i++) { console.writeLine(i); }'.
Describe the difference between '==' and '===' in Elan++.
'==' checks for equality in value, while '===' checks for equality in both value and type. For example, '5' == 5 would return true, but '5' === 5 would return false.
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What you’re looking for early on

Does the candidate have a deep understanding of Elan++?
Has the candidate demonstrated problem-solving skills?
Is the candidate able to communicate effectively?
Has the candidate shown any experience with software development methodologies?

Next 20 minutes

Specific Elan++ 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 is a function in Elan++ and how would you define one?
A function in Elan++ is a block of reusable code. It is defined using the 'function' keyword followed by the function name and parameters in parentheses. For example: 'function add(a, b) { return a + b; }'.
How do you handle exceptions in Elan++?
Exceptions in Elan++ are handled using 'try-catch' blocks. The 'try' block contains the code that might throw an exception, and the 'catch' block contains the code to handle the exception.
What are closures in Elan++?
Closures in Elan++ are functions that have access to the parent scope, even after the parent function has closed. This is a powerful feature that allows for data privacy and function factories.
How would you implement inheritance in Elan++?
In Elan++, inheritance is implemented using the 'extends' keyword. For example, if you have a 'Person' class and you want to create a 'Student' class that inherits from it, you would write: 'class Student extends Person { }'.
What is the purpose of the 'super' keyword in Elan++?
The 'super' keyword in Elan++ is used to call the constructor of a parent class. It is used within the constructor of a subclass.
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The ideal back-end app developer

What you’re looking to see on the Elan++ engineer at this point.

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

What does this simple Elan++ code do?
var name = 'Elan';
This code declares a variable named 'name' and assigns it the string value 'Elan'. It then prints the value of the variable, which is 'Elan'.
What does the following Elan++ code do?
for (var i = 0; i < 10; i++) {
This code prints the numbers 0 through 9. It does this by using a for loop that starts with 'i' at 0 and increments 'i' by 1 each time through the loop until 'i' is no longer less than 10.
What will be the output of this Elan++ code?
var arr = [1, 2, 3, 4, 5];
var sum = 0;
for (var i = 0; i < arr.length; i++) {
  sum = sum + arr[i];
This code calculates and prints the sum of the numbers in the array 'arr'. The output will be 15.
What does the following Elan++ code do?
var num = 10;
thread t1 = new thread(() => {
  while (num > 0) {
This code creates a new thread 't1' that counts down from 10 to 1, printing each number and then sleeping for one second before continuing. The thread is then started.

Wrap-up questions

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

How do you create a private property in Elan++?
In Elan++, you can create a private property by prefixing the property name with a hash sign '#'. For example: '#myPrivateVar'.
What are decorators in Elan++ and how would you use one?
Decorators in Elan++ are a special kind of declaration that can be attached to a class declaration, method, accessor, property, or parameter. They are used to modify or observe the behavior of these declarations. For example: '@readonly myVar'.
Describe the difference between 'null' and 'undefined' in Elan++.
'null' in Elan++ is an assignment value that means 'no value or no object'. It is an intentional absence of any object value. 'undefined' means a variable has been declared but has not yet been assigned a value.

Elan++ application related

Product Perfect's Elan++ development capabilities

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