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ObjectLOGO++ is a historical computer programming language, developed as an extension of the LOGO programming language. It was first introduced in the late 1980s, with its primary purpose being to teach programming concepts to beginners. The language is known for its "turtle graphics," a vector-based drawing tool that visually represents the execution of programming commands. ObjectLOGO++ added object-oriented features to the original LOGO, allowing for more complex and versatile coding practices. This information is sourced from various academic and technological resources, including Massachusetts Institute of Technology's (MIT) Artificial Intelligence Laboratory, which played a significant role in LOGO's development.

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

First 20 minutes

General ObjectLOGO++ app knowledge and experience

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

How would you define ObjectLOGO++?

ObjectLOGO++ is an object-oriented extension of the LOGO programming language. It incorporates features of object-oriented programming, including classes, objects, inheritance, and polymorphism.

What are the key features of ObjectLOGO++?

Key features of ObjectLOGO++ include object-oriented programming, procedural programming, list processing, and interactive graphics.

Describe the difference between procedural and object-oriented programming in ObjectLOGO++.

Procedural programming in ObjectLOGO++ involves writing procedures or functions that perform operations on data, while object-oriented programming involves creating objects that contain both data and methods.

How would you create a class in ObjectLOGO++?

In ObjectLOGO++, a class is created using the 'to' keyword followed by the class name and its properties and methods enclosed in square brackets.

What are the principles of object-oriented programming in ObjectLOGO++?

The principles of object-oriented programming in ObjectLOGO++ include encapsulation, inheritance, and polymorphism.

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What you’re looking for early on

Does the candidate demonstrate a strong understanding of ObjectLOGO++ fundamentals?

What is the candidate's level of experience with Object-Oriented Programming (OOP)?

How proficient is the candidate at problem-solving and debugging in ObjectLOGO++?

Is the candidate able to design and implement algorithms in ObjectLOGO++?

Next 20 minutes

Specific ObjectLOGO++ 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 ObjectLOGO++?

Inheritance in ObjectLOGO++ is implemented by creating a new class that inherits properties and methods from an existing class using the 'inherits' keyword.

Describe the difference between a class and an object in ObjectLOGO++.

In ObjectLOGO++, a class is a blueprint for creating objects. An object is an instance of a class, with its own set of values for the properties defined in the class.

How would you handle exceptions in ObjectLOGO++?

Exception handling in ObjectLOGO++ is done using the 'catch' and 'throw' commands. 'Catch' is used to specify the block of code to execute in case an exception occurs, and 'throw' is used to raise an exception.

What are the data types supported by ObjectLOGO++?

ObjectLOGO++ supports several data types, including numbers, strings, lists, arrays, and objects.

How would you implement polymorphism in ObjectLOGO++?

Polymorphism in ObjectLOGO++ is implemented by defining methods in a superclass that can be overridden by subclasses. This allows objects of different classes to be treated as objects of their superclass.

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

What does this simple ObjectLOGO++ code do?
TO square :num
REPEAT :num [FD :num RT 90]
END
This code defines a procedure named 'square' that takes one input ':num'. It repeats the commands 'FD :num RT 90' :num times, which draws a square of side length :num.
What will be the output of this ObjectLOGO++ code?
TO greet :name
PRINT [Hello, :name]
END
greet "John"
The output of this code will be 'Hello, John'. The procedure 'greet' takes a name as input and prints a greeting message with the name.
What does this ObjectLOGO++ code do with the list?
TO reverse :list
IF EMPTY? :list [OUTPUT []]
OUTPUT FPUT LAST :list reverse BF :list
END
This code defines a procedure 'reverse' that takes a list as input and returns the reversed list. It uses recursion to achieve this.
What does this ObjectLOGO++ code do related to threading?
TO start
LAUNCH [process1]
LAUNCH [process2]
END
This code starts two concurrent processes named 'process1' and 'process2'. The 'LAUNCH' command in ObjectLOGO++ is used to start a new thread of execution.

Wrap-up questions

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

Describe the difference between static and dynamic typing in ObjectLOGO++.

ObjectLOGO++ is dynamically typed, meaning that the type of a variable is checked at runtime. This is different from statically typed languages, where the type of a variable is checked at compile time.

How would you create an array in ObjectLOGO++?

An array in ObjectLOGO++ is created using the 'array' command followed by the size of the array.

What are the control structures available in ObjectLOGO++?

ObjectLOGO++ provides several control structures, including 'if', 'ifelse', 'repeat', 'while', and 'for'.

ObjectLOGO++ application related

Product Perfect's ObjectLOGO++ development capabilities

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

ObjectLOGO++ Consultive assessments

ObjectLOGO++ Application Conversion Assessment ObjectLOGO++ Application Integration Assessment ObjectLOGO++ Data & Database Integration Assessment

Custom ObjectLOGO++ development projects

Custom ObjectLOGO++ App Conversion ObjectLOGO++ Custom App Development Process App UI Design for ObjectLOGO++ Facelifts

Hiring guide for ObjectLOGO++ Engineers

ObjectLOGO++ Developer Hiring Guide

What you’re looking for early on

The ideal back-end app developer

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

ObjectLOGO++ Consultive assessments

Custom ObjectLOGO++ development projects