Product Perfect

BETA is a powerful, object-oriented programming language that was developed in the 1980s by Bent Bruun Kristensen and Ole Lehrmann Madsen. It's known for its comprehensive abstraction mechanisms which include: classes, procedures, functions and coroutines all unified into one concept called patterns. BETA also supports nested class structures (patterns), providing high flexibility in building abstractions and factorizing common behavior. The language has strong typing to catch errors at compile-time rather than runtime. Additionally, it provides support for persistent objects - data that outlives the process which created it - directly within the language syntax. Despite these advanced features, BETA did not gain widespread use outside of academic environments due to its complexity compared with other languages available during its time such as C++ or Java.

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

First 20 minutes

General BETA app knowledge and experience

The first 20 minutes of the interview should seek to understand the candidate's general background in BETA 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 BETA?

BETA is a powerful language that supports abstraction, encapsulation, and inheritance. It has a flexible type system, supports concurrent programming, and has a rich set of built-in types. It also has a unique feature called pattern, which is a generalization of classes and procedures from other languages.

What are the main data types in BETA?

The main data types in BETA are integer, real, boolean, char, text, and reference types. BETA also supports composite data types like arrays, lists, and sets.

Describe the difference between a descriptor and a pattern in BETA.

A descriptor is a data type that describes the structure of an object, while a pattern is a construct that defines both the structure and behavior of an object. Patterns in BETA are more powerful than descriptors as they can also include methods and other patterns.

How would you implement inheritance in BETA?

Inheritance in BETA is implemented using the <: symbol. The subclass pattern is written after the <: symbol and the superclass pattern is written before it. The subclass pattern inherits all the attributes and methods of the superclass pattern.

What are the different types of patterns in BETA?

There are three types of patterns in BETA: object patterns, procedure patterns, and class patterns. Object patterns define objects, procedure patterns define procedures, and class patterns define classes.

The hiring guide has been successfully sent to your email address.

Oops! Something went wrong while submitting the form.

What you’re looking for early on

Does the candidate have a strong understanding of BETA programming language?

Has the candidate demonstrated problem-solving skills?

Is the candidate able to communicate effectively?

Does the candidate have experience with other relevant technologies?

Next 20 minutes

Specific BETA 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 BETA?

Exceptions in BETA are handled using the WHEN statement. The WHEN statement is followed by a pattern that matches the exception. The code to handle the exception is written inside the WHEN statement.

Describe the difference between static and dynamic binding in BETA.

Static binding is when the method to be invoked is determined at compile time, while dynamic binding is when it is determined at runtime. BETA supports both static and dynamic binding.

How would you implement concurrency in BETA?

Concurrency in BETA is implemented using the CO-OPERATION statement. The CO-OPERATION statement is used to define a set of concurrent tasks. Each task is defined by a pattern and can communicate with other tasks using channels.

What are the different types of channels in BETA?

There are two types of channels in BETA: input channels and output channels. Input channels are used to receive data from other tasks, while output channels are used to send data to other tasks.

Describe the difference between a virtual pattern and a non-virtual pattern in BETA.

A virtual pattern is a pattern that can be overridden in a subclass, while a non-virtual pattern cannot be overridden. Virtual patterns are used to implement polymorphism in BETA.

The hiring guide has been successfully sent to your email address.

Oops! Something went wrong while submitting the form.

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

What does the following code do?
{
	'key': 'value'
}
This code defines a simple JSON object with one key-value pair. The key is 'key' and the value is 'value'.
What will be the output of the following code?
{
	'key1': 'value1',
	'key2': 'value2',
	'key3': 'value3'
}
This code will output a JSON object with three key-value pairs. The keys are 'key1', 'key2', and 'key3', and their respective values are 'value1', 'value2', and 'value3'.
What does the following code do?
{
	'array': [
		{'key1': 'value1'},
		{'key2': 'value2'},
		{'key3': 'value3'}
	]
}
This code defines a JSON object with a key named 'array'. The value of 'array' is an array of three JSON objects. Each object in the array has a single key-value pair.
What will be the output of the following code?
{
	'object': {
		'key1': 'value1',
		'key2': 'value2',
		'key3': 'value3'
	}
}
This code will output a JSON object with a single key-value pair. The key is 'object', and its value is another JSON object with three key-value pairs.

Wrap-up questions

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

How would you implement polymorphism in BETA?

Polymorphism in BETA is implemented using virtual patterns. A virtual pattern is defined in a superclass and can be overridden in a subclass. The actual pattern that is invoked is determined at runtime based on the type of the object.

What are the different types of variables in BETA?

There are two types of variables in BETA: object variables and reference variables. Object variables hold objects, while reference variables hold references to objects.

Describe the difference between a constant and a variable in BETA.

A constant is a value that cannot be changed after it is defined, while a variable is a value that can be changed. In BETA, constants are defined using the CONST keyword and variables are defined using the VAR keyword.

BETA application related

Product Perfect's BETA development capabilities

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

BETA Consultive assessments

BETA Application Conversion Assessment BETA Application Integration Assessment BETA Data & Database Integration Assessment

Custom BETA development projects

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

Hiring guide for BETA Engineers

BETA Developer Hiring Guide

What you’re looking for early on

The ideal back-end app developer

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

BETA Consultive assessments

Custom BETA development projects