Hiring guide for Cobra Engineers

Cobra Developer Hiring Guide

The Cobra programming language is a general-purpose, object-oriented language that was developed by Charles Esterbrook in 2006. It integrates features from Python, C#, Eiffel, and other languages to provide robustness and productivity. The software emphasizes design-by-contract principles while also supporting unit testing and static typing for enhanced reliability. Its source code is open-source under the MIT License on SourceForge.net since its inception. Cobra's unique blend of features has made it an intriguing choice for developers seeking a versatile yet powerful coding tool.

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

First 20 minutes

General Cobra app knowledge and experience

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

How would you define the key features of Cobra language?
Cobra language has several key features such as static typing, design by contract, unit tests, a clean syntax, automatic garbage collection, and inbuilt support for threading and multiprocessor work.
What are the benefits of using Design by Contract in Cobra?
Design by Contract in Cobra provides a clear specification of the system's components, improves software correctness, simplifies debugging, and aids in maintaining and documenting the code.
How would you handle exceptions in Cobra?
Exceptions in Cobra can be handled using the 'try-catch' block. We use 'try' before the section of code where an exception could occur and 'catch' to handle the exception if it occurs.
Describe the difference between static typing and dynamic typing in Cobra.
Static typing in Cobra means the type of variable is known at compile time, which allows the compiler to perform optimizations. Dynamic typing means the type is checked at runtime, which offers more flexibility.
What are Cobra's support capabilities for multi-threading?
Cobra has built-in support for multi-threading. It provides a simple and clean syntax for spawning threads, locking, signaling, and other threading operations.
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What you’re looking for early on

Does the candidate demonstrate a strong understanding of Cobra programming language?
Have they shared their past experience with similar projects or roles?
Can they effectively communicate complex technical concepts?
Are they able to solve problems and make decisions independently?

Next 20 minutes

Specific Cobra 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 inheritance in Cobra?
Inheritance in Cobra can be implemented by using the 'inherits' keyword. The subclass specifies the superclass after the 'inherits' keyword.
Describe the difference between a class and an object in Cobra.
A class in Cobra is a blueprint or prototype from which objects are created. An object is an instance of a class.
What are the uses of interfaces in Cobra?
Interfaces in Cobra are used to define a contract for classes. They are useful when we want to ensure that a class adheres to a certain contract but we don't care about the actual implementation.
How would you implement polymorphism in Cobra?
Polymorphism in Cobra can be implemented through method overriding, where a subclass provides a specific implementation of a method that is already provided by its parent class.
Describe the difference between 'is' and 'isa' in Cobra.
'is' is used to check if an object is of a certain type. 'isa' is used to check if an object is an instance of a certain class or a subclass of it.
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The ideal back-end app developer

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

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

What does this simple Cobra code do?
var x = 10
if x > 5, print 'Greater than 5'
This code declares a variable 'x' and assigns it the value 10. Then it checks if 'x' is greater than 5. If 'x' is greater than 5, it prints 'Greater than 5'.
What will be the output of this Cobra code snippet?
var list = [1, 2, 3, 4, 5]
for item in list, print item
This code declares a list with five elements and iterates over each element in the list. It will print each element of the list, so the output will be 1, 2, 3, 4, 5.
What does this Cobra code snippet do?
var list = [1, 2, 3, 4, 5]
list = list.reverse
print list
This code declares a list with five elements. It then reverses the order of the elements in the list and prints the reversed list. So, the output will be 5, 4, 3, 2, 1.
What does this Cobra code snippet do?
var lock = Cobra.Lang.Lock()
print 'Hello, World!'
This code creates a new lock object, acquires the lock, prints 'Hello, World!', and then releases the lock. This ensures that the print statement is executed in a thread-safe manner.

Wrap-up questions

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

What are Cobra's capabilities for handling null values?
Cobra provides the '?' operator to handle null values. This operator can be used to provide a default value when a null value is encountered.
How would you design a multi-threaded application in Cobra?
Designing a multi-threaded application in Cobra involves careful use of the 'thread' keyword for spawning threads, and the use of locks, signals, and other concurrency primitives to ensure correct and efficient operation.
Describe the difference between 'assert' and 'ensure' in Cobra.
'assert' is used to verify that a condition is true at a particular point in the code. 'ensure' is used to specify a condition that must be true when a method finishes executing.

Cobra application related

Product Perfect's Cobra development capabilities

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