Hiring guide for FRISCO Standard Lisp. Engineers

FRISCO Standard Lisp. Developer Hiring Guide

FRISCO Standard Lisp, developed in the late 1980s, is a variant of the Lisp programming language designed for the FRISCO project (Framework for Integrated Symbolic Computation). Its primary aim was to create a common language for symbolic computation research across various universities in Europe. The language was designed to be highly portable and efficient, and it introduced several innovations including a module system and an object-oriented programming system. The development of FRISCO Standard Lisp was led by researchers at the University of Bath and the University of St Andrews. Today, it serves as an important historical reference in the evolution of Lisp and symbolic computation languages.

Ask the right questions secure the right FRISCO Standard Lisp. talent among an increasingly shrinking pool of talent.

First 20 minutes

General FRISCO Standard Lisp. app knowledge and experience

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

What are the basic data types in Lisp?
The basic data types in Lisp are: Integers, Floating point numbers, Characters, Strings, Symbols, Lists, Arrays, Streams, and Functions.
How would you define a function in Lisp?
In Lisp, we define a function using the DEFUN keyword. For example: (defun function_name (arguments) (function_body))
What is a symbol in Lisp?
In Lisp, a symbol is a string of characters, used as identifiers for variables and functions.
Describe the difference between 'defun' and 'lambda' in Lisp.
'defun' and 'lambda' are both used to create functions in Lisp, but 'defun' also assigns a name to the function, while 'lambda' creates anonymous functions.
How would you implement recursion in Lisp?
Recursion in Lisp can be implemented by defining a function that calls itself. For example, a recursive factorial function can be defined as follows: (defun factorial (n) (if (<= n 1) 1 (* n (factorial (- n 1)))))
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What you’re looking for early on

Does the candidate have a solid understanding of FRISCO Standard Lisp?
Has the candidate demonstrated problem-solving skills?
Is the candidate able to communicate effectively?
Does the candidate have experience with similar projects?

Next 20 minutes

Specific FRISCO Standard Lisp. 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 is tail recursion in Lisp, and why is it important?
Tail recursion in Lisp is a form of recursion where the recursive call is the last operation in the function. It is important because it can be optimized by the compiler, leading to more efficient code.
What is a macro in Lisp and how is it different from a function?
A macro in Lisp is a construct that generates code at compile time. Unlike functions, macros do not evaluate their arguments and can generate different code depending on the context.
How would you handle errors in Lisp?
In Lisp, we can handle errors using the condition system. This includes the use of functions like 'handler-case' and 'handler-bind' to catch and handle exceptions.
What are the differences between 'let' and 'let*' in Lisp?
'let' and 'let*' both allow you to bind variables to values. The difference is that 'let' bindings are all made simultaneously, while 'let*' bindings are made sequentially, allowing later bindings to refer to earlier ones.
How would you implement a list in Lisp?
A list in Lisp can be created using the 'list' function or by quoting. For example: (list 1 2 3) or '(1 2 3).
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The ideal back-end app developer

What you’re looking to see on the FRISCO Standard Lisp. engineer at this point.

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

What does this simple Lisp code do?
(defun hello-world () (print 'Hello, World!))
This code defines a function named 'hello-world' that prints the string 'Hello, World!' when called.
What does this Lisp code do?
(defun factorial (n) (if (<= n 1) 1 (* n (factorial (- n 1)))))
This code defines a recursive function named 'factorial' that calculates the factorial of a given number 'n'. If 'n' is less than or equal to 1, it returns 1. Otherwise, it multiplies 'n' by the factorial of 'n-1'.
What does this Lisp code do?
(defun mapcar* (function &rest args) (if (not (endp (car args))) (cons (apply function (mapcar #'car args)) (apply #'mapcar* function (mapcar #'cdr args)))))
This code defines a function named 'mapcar*' that applies a given function to each element of a list or lists and returns a list of the results. It's a generalized version of 'mapcar' that can handle multiple lists of possibly differing lengths.
What does this Lisp code do?
(defun parallel-execute (function-list) (mapcar #'(lambda (f) (make-thread f)) function-list))
This code defines a function named 'parallel-execute' that creates a new thread for each function in a given list and executes them in parallel. 'make-thread' is a hypothetical function that creates a new thread.

Wrap-up questions

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

Describe the difference between 'eq', 'eql', 'equal', and 'equalp' in Lisp.
These are all comparison functions in Lisp. 'eq' tests if two items are the same object, 'eql' also compares the values of numbers and characters, 'equal' compares the structures of lists and arrays, and 'equalp' also ignores differences in case and numeric type.
What is the purpose of the 'cons' function in Lisp?
The 'cons' function in Lisp is used to construct a new list from two arguments. The first argument becomes the head of the list, and the second argument becomes the tail.
How would you implement a hash table in Lisp?
A hash table in Lisp can be created using the 'make-hash-table' function. Items can be added to the hash table using the 'setf' function in combination with the 'gethash' function.

FRISCO Standard Lisp. application related

Product Perfect's FRISCO Standard Lisp. development capabilities

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