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zK is a programming language that was designed for the purpose of distributed computing. It is a functional programming language, which means that it emphasizes the evaluation of mathematical functions and avoids changing-state and mutable data. zK supports concurrent processing, allowing multiple computations to be performed simultaneously. It also has a strong static type system which helps prevent many potential run-time errors. The language is designed to make it easier to write reliable, high-performance distributed applications.

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

First 20 minutes

General zK language app knowledge and experience

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

How would you describe the main features of zK language?

zK language is a high-level, interpreted, and dynamic programming language. It is designed for web development and is also used as a general-purpose programming language. It supports multiple programming paradigms, including procedural, object-oriented, and functional programming. It also provides automatic memory management and has a large standard library.

What are the data types supported by zK language?

zK language supports several data types including integers, floating-point numbers, strings, lists, tuples, dictionaries, sets, and booleans.

How would you declare a variable in zK language?

In zK language, you can declare a variable by simply assigning a value to a variable name without needing to declare its type. For example, 'x = 10' declares an integer variable named 'x' with a value of 10.

Describe the difference between a list and a tuple in zK language.

In zK language, both lists and tuples are used to store collections of data. The main difference between them is that lists are mutable, meaning their elements can be changed, while tuples are immutable, meaning their elements cannot be changed once assigned.

How would you handle exceptions in zK language?

In zK language, exceptions can be handled using the 'try', 'except', 'finally' blocks. The 'try' block contains the code that might raise an exception, the 'except' block contains the code that will be executed if an exception occurs, and the 'finally' block contains the code that will be executed regardless of whether an exception occurs or not.

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What you’re looking for early on

Does the candidate have a strong understanding of the zK language?

Has the candidate demonstrated problem-solving skills?

Is the candidate familiar with the tools and technologies commonly used with the zK language?

Can the candidate communicate effectively about technical concepts?

Next 20 minutes

Specific zK language 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 uses of functions in zK language?

Functions in zK language are used to group a set of statements that perform a specific task. Functions help to make the code modular, easier to understand, and reusable.

How would you create a class in zK language?

In zK language, a class can be created using the 'class' keyword followed by the class name. The properties and methods of the class are defined in an indented block under the class declaration.

Describe the difference between a class method and a static method in zK language.

In zK language, a class method is a method that's bound to the class and not the instance of the class. It can modify the class state that would apply across all instances of the class. A static method, on the other hand, doesn't know anything about the class or instance. It works like a regular function but belongs to the class's namespace.

What are decorators in zK language and how would you use them?

Decorators in zK language are a powerful tool that allows you to modify the behavior of a function or class. They are used by prefixing the '@' symbol to a function. For example, '@staticmethod' is a built-in decorator that makes a method static.

How would you implement multithreading in zK language?

In zK language, multithreading can be implemented using the 'threading' module. You can create a new thread by creating an object of 'Thread' class, and start it by calling the 'start' method. The 'run' method of the 'Thread' class is where you define the logic that will be executed in the new thread.

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

What does the following zK code do?
def add(a, b) { return a + b; }
This code defines a function named 'add' that takes two parameters 'a' and 'b'. It returns the sum of 'a' and 'b'.
What will be the output of the following zK code?
def a = [1, 2, 3]; def b = a[1]; print(b);
This code first defines an array 'a' with three elements. Then it defines a variable 'b' and assigns it the second element of the array 'a'. Finally, it prints the value of 'b'. The output will be '2'.
What does the following zK code do?
def a = [1, 2, 3]; a.map(x => x * 2);
This code first defines an array 'a' with three elements. Then it applies the 'map' function to the array 'a'. The 'map' function takes a lambda function as an argument, which multiplies each element of the array by 2. The result is a new array where each element is twice the corresponding element in the original array.
What does the following zK code do?
def a = async { return 1 + 2; }; a.await;
This code first defines an asynchronous function 'a' that returns the sum of 1 and 2. Then it waits for the completion of the asynchronous function 'a' using the 'await' keyword. The result is '3'.

Wrap-up questions

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

Describe the difference between deep copy and shallow copy in zK language.

In zK language, a shallow copy creates a new object and inserts references to the objects found in the original. Changes to the original object will affect the copied object. A deep copy, on the other hand, creates a new object and recursively adds copies of the objects found in the original. Changes to the original object will not affect the copied object.

How would you perform file I/O operations in zK language?

In zK language, file I/O operations can be performed using the built-in 'open' function, which returns a file object. You can read from a file using the 'read' method, write to a file using the 'write' method, and close a file using the 'close' method.

What are generators in zK language and how would you use them?

Generators in zK language are a type of iterable, like lists or tuples. They do not store all values in memory, but generate them on the fly, which makes them much more memory efficient when dealing with large datasets. You can create a generator by using the 'yield' keyword in a function.

zK language application related

Product Perfect's zK language development capabilities

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

zK language Consultive assessments

zK language Application Conversion Assessment zK language Application Integration Assessment zK language Data & Database Integration Assessment

Custom zK language development projects

Custom zK language App Conversion zK language Custom App Development Process App UI Design for zK language Facelifts

Hiring guide for zK language Engineers

zK language Developer Hiring Guide

What you’re looking for early on

The ideal back-end app developer

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

zK language Consultive assessments

Custom zK language development projects