Product Perfect

Unicon is a high-level, general-purpose programming language that is fully object-oriented and provides a clean, flexible syntax. It is an extension of the Icon programming language, adding several features including classes, packages and exception handling. Unicon supports multiple programming paradigms such as procedural, logic and goal-directed programming. It also offers built-in functions for string scanning and pattern matching which makes it highly suitable for text processing tasks. The language also includes facilities for graphics and GUI applications development. Unicon programs are portable across many systems due to its platform-independent nature.

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

First 20 minutes

General Unicon app knowledge and experience

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

How would you define Unicon?

Unicon is a high-level, general-purpose programming language that is object-oriented, imperative, and flexible. It is designed for productivity and performance, and is an extension of the Icon programming language.

What are the key features of Unicon?

Unicon offers a variety of features including but not limited to: support for graphics, high-level networking, a rich set of built-in types, automatic storage management, and exception handling.

Describe the difference between Unicon and Icon programming languages.

Unicon is an extension of the Icon programming language. It includes all the features of Icon, but also adds a number of significant features such as object-oriented programming, high-level graphics, and networking facilities.

How would you create a class in Unicon?

In Unicon, a class is defined using the 'class' keyword followed by the class name. The body of the class is enclosed in braces and includes method definitions.

What are generators in Unicon?

Generators in Unicon are a powerful control structure that allow a function or method to produce a sequence of results instead of a single value.

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What you’re looking for early on

Has the candidate demonstrated a deep understanding of Unicon language?

Is the candidate able to effectively solve problems using Unicon?

Does the candidate have experience with projects similar to ours?

Does the candidate appear to work well in a team?

Next 20 minutes

Specific Unicon 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 handle exceptions in Unicon?

Unicon provides a mechanism for handling exceptions using the 'try' and 'catch' keywords. The 'try' block contains the code that might throw an exception, and the 'catch' block contains the code to handle the exception.

Describe how you would implement inheritance in Unicon.

Inheritance in Unicon is implemented using the 'extends' keyword. The child class is defined as extending the parent class, inheriting its methods and fields.

What are the data types supported by Unicon?

Unicon supports a variety of data types including integers, real numbers, strings, lists, sets, tables, and records.

How would you perform file I/O operations in Unicon?

Unicon provides built-in functions for file I/O operations. For example, 'open' to open a file, 'write' to write to a file, 'read' to read from a file, and 'close' to close a file.

What is the role of co-expressions in Unicon?

Co-expressions in Unicon provide a means of concurrent programming. They are a way of packaging up a computation so that it can be resumed and suspended at any point.

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

What does the following Unicon code do?
procedure main()
 write("Hello, Unicon!")
 end
The code prints the string 'Hello, Unicon!' to the standard output.
What will be the output of the following Unicon code?
procedure main()
 every write(![1,2,3,4,5])
 end
The code will print each number from the list [1,2,3,4,5] on a new line.
What does the following Unicon code do?
procedure main()
 L := [1,2,3,4,5]
 every i := !L do write(i)
 end
The code declares a list L with elements from 1 to 5, then it prints each element of the list on a new line.
What will be the output of the following Unicon code?
procedure main()
 thread write("Hello, Unicon!")
 end
The code will create a new thread that prints the string 'Hello, Unicon!' to the standard output.

Wrap-up questions

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

How would you implement polymorphism in Unicon?

Polymorphism in Unicon is achieved through method overriding and dynamic binding. A subclass can provide a different implementation of a method that is already provided by its parent class.

What is the purpose of the 'every' keyword in Unicon?

'Every' is a keyword in Unicon that applies an expression to every element of a structure. It is used for operations that need to be performed on all elements of a list, set, or table.

Describe how you would use the 'suspend' keyword in Unicon.

The 'suspend' keyword in Unicon is used in the body of a generator function or method to produce a result. The computation is suspended and can be resumed later to produce more results.

Unicon application related

Product Perfect's Unicon development capabilities

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

Unicon Consultive assessments

Unicon Application Conversion Assessment Unicon Application Integration Assessment Unicon Data & Database Integration Assessment

Custom Unicon development projects

Custom Unicon App Conversion Unicon Custom App Development Process App UI Design for Unicon Facelifts

Hiring guide for Unicon Engineers

Unicon Developer Hiring Guide

What you’re looking for early on

The ideal back-end app developer

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

Unicon Consultive assessments

Custom Unicon development projects