9 Essential Ruby on Rails Interview Questions from Toptal
Toptal sourced essential questions that the best Ruby on Rails developers and engineers can answer. Driven from our community, we encourage experts to submit questions and offer feedback.
Q1. What is CSRF? How does Rails protect against it?
Q2. What is the difference between Ruby’s Hash and ActiveSupport’s HashWithIndifferentAccess?
Q3. Please note: This interview question only applies to legacy, pre-Ruby-2.2 projects.
What’s the problem with the following controller code? What would be the consequence of leaving this code in a production app? How would you fix it?
Q4. What’s the issue with the controller code below? How would you fix it?
Q5. How would you define a Person model so that any Person can be assigned as the parent of another Person (as demonstrated in the Rails console below)? What columns would you need to define in the migration creating the table for Person?
🔗Article Link
Toptal sourced essential questions that the best Ruby on Rails developers and engineers can answer. Driven from our community, we encourage experts to submit questions and offer feedback.
Q1. What is CSRF? How does Rails protect against it?
Q2. What is the difference between Ruby’s Hash and ActiveSupport’s HashWithIndifferentAccess?
Q3. Please note: This interview question only applies to legacy, pre-Ruby-2.2 projects.
What’s the problem with the following controller code? What would be the consequence of leaving this code in a production app? How would you fix it?
Q4. What’s the issue with the controller code below? How would you fix it?
Q5. How would you define a Person model so that any Person can be assigned as the parent of another Person (as demonstrated in the Rails console below)? What columns would you need to define in the migration creating the table for Person?
🔗Article Link
Toptal
Essential Ruby on Rails Interview Questions | Toptal®
Know what to ask. Know how to answer.
👍1
The process of accessing data stored in a serial access memory is similar to manipulating data on a ________
Anonymous Quiz
19%
Heap
16%
Binary Tree
45%
Array
20%
Stack
5 Essential React.js Interview Questions
Top React Interview Questions and Answers to Prepare For
React has consistently been ranked among the top web frameworks and is widely used to build various applications. In fact, according to Stack Overflow’s 2020 developer survey, it’s ranked at number 2 out of all web frameworks, just behind jQuery!
React is a JavaScript library with a declarative and component-based approach for building user interfaces. React has exploded in popularity because its simple and declarative API produces highly-performant applications — and that momentum only continues to grow.
🔗Article Link
Top React Interview Questions and Answers to Prepare For
React has consistently been ranked among the top web frameworks and is widely used to build various applications. In fact, according to Stack Overflow’s 2020 developer survey, it’s ranked at number 2 out of all web frameworks, just behind jQuery!
React is a JavaScript library with a declarative and component-based approach for building user interfaces. React has exploded in popularity because its simple and declarative API produces highly-performant applications — and that momentum only continues to grow.
🔗Article Link
Arc Talent Career Blog
55+ Top React Interview Questions and Answers to Prepare For
We've got the React interview questions and answers to practice and prepare for your big technical interview and land the job you want.
👍2
Choose the correct snippet from the following to check if the variable "a" is not equal the "NULL":
Anonymous Quiz
38%
if(a!==null)
4%
if(a!)
5%
if(a!null)
52%
if(a!=null)
👍5
15 Questions to Ask During a Ruby Interview
When hiring Ruby on Rails programmers, knowing the right questions to ask during an interview was a real challenge for me at first. In 30 minutes or less, it's difficult to get a solid read on a candidate's skill set without looking at code they've previously written. And in the corporate/enterprise world, I often don't have access to their previous work.
To ensure we hired competent ruby developers at my last job, I created a list of 15 ruby questions -- a ruby measuring stick if you will -- to select the cream of the crop that walked through our doors.
🔗Article Link
When hiring Ruby on Rails programmers, knowing the right questions to ask during an interview was a real challenge for me at first. In 30 minutes or less, it's difficult to get a solid read on a candidate's skill set without looking at code they've previously written. And in the corporate/enterprise world, I often don't have access to their previous work.
To ensure we hired competent ruby developers at my last job, I created a list of 15 ruby questions -- a ruby measuring stick if you will -- to select the cream of the crop that walked through our doors.
🔗Article Link
Gist
15 Questions to Ask During a Ruby Interview
15 Questions to Ask During a Ruby Interview. GitHub Gist: instantly share code, notes, and snippets.
👍2
Top 250+ Rust Programming Language Interview Questions
If you are an expert in Rust Programming Language then this is for you. Let us know if you looking for a job change? Then do not worry, we’ve a right answer for your job interview preparation. If you are preparing for Rust Programming Language job interview then go through Wisdomjobs interview questions and answers page. Rust Programming Language is regular programming language sponsored by Mozilla. It is very safe, concurrent and practical language. It is developed by Rust project developers. There are certifications to improve the visibility in interview. Good knowledge on the Rust Programming Language is must to crack the interview. Below are the Rust Programming Language interview questions and answers which makes you comfortable to face the interviews
🔗Article Link
If you are an expert in Rust Programming Language then this is for you. Let us know if you looking for a job change? Then do not worry, we’ve a right answer for your job interview preparation. If you are preparing for Rust Programming Language job interview then go through Wisdomjobs interview questions and answers page. Rust Programming Language is regular programming language sponsored by Mozilla. It is very safe, concurrent and practical language. It is developed by Rust project developers. There are certifications to improve the visibility in interview. Good knowledge on the Rust Programming Language is must to crack the interview. Below are the Rust Programming Language interview questions and answers which makes you comfortable to face the interviews
🔗Article Link
Top 10 Sass Interview Questions from educba
SASS (Syntactically Awesome Style Sheets) is a kind of style sheet language which was designed by Hampton Catlin and was developed by Chris Eppstein and Natalie Weizenbaum. It is a pre-processor scripting language that will be compiled or interpreted into CSS. SassScript is itself a scripting language. Its typing discipline is dynamic. It was licensed under MIT license. It first appeared in the year 2006. After its initial development, SASS was extended to SassScript. It supports cross-platform operating systems. It was influenced by CSS, LESS, YAML, etc. The types of file extensions for this SASS are .scss and .sass and its official implementation is also an open-source project which was developed using Ruby.
🔗Article Link
SASS (Syntactically Awesome Style Sheets) is a kind of style sheet language which was designed by Hampton Catlin and was developed by Chris Eppstein and Natalie Weizenbaum. It is a pre-processor scripting language that will be compiled or interpreted into CSS. SassScript is itself a scripting language. Its typing discipline is dynamic. It was licensed under MIT license. It first appeared in the year 2006. After its initial development, SASS was extended to SassScript. It supports cross-platform operating systems. It was influenced by CSS, LESS, YAML, etc. The types of file extensions for this SASS are .scss and .sass and its official implementation is also an open-source project which was developed using Ruby.
🔗Article Link
EDUCBA
Top 10 SASS Interview Questions And Answers {Updated For 2023}
In the above article, we have kept the most asked SASS Interview Questions with their detailed answers to it. So that you can crack the interview with ease
What happens if the following C++ statement is compiled and executed?
int *ptr = NULL; delete ptr;
int *ptr = NULL; delete ptr;
Anonymous Quiz
16%
The program is not semantically correct
35%
The program is compiled and executed successfully
21%
The program gives a compile-time error
28%
The program compiled successfully but throws an error during run-time
Scala Frequently Asked Questions - General
A list of Frequently Asked Questions and their answers, sorted by category of Scala
What is this document?
How does this FAQ relate to the one I saw on the Scala Wiki?
What is Scala?
Who is responsible for Scala?
How do I submit code, documentation, or API comments?
🔗Article Link
A list of Frequently Asked Questions and their answers, sorted by category of Scala
What is this document?
How does this FAQ relate to the one I saw on the Scala Wiki?
What is Scala?
Who is responsible for Scala?
How do I submit code, documentation, or API comments?
🔗Article Link
diwu/LeetCode-Solutions-in-Swift
LeetCode Solutions in Swift 5
Creator: diwu
Stars ⭐️: 1.5k
Forked By : 213
GitHub Repo: https://github.com/diwu/LeetCode-Solutions-in-Swift
#Swift_5
➖➖➖➖➖➖➖➖➖➖➖➖➖➖
Join @coding_interview_preparation for more interview questions.
*This channel belongs to @bigdataspecialist group
LeetCode Solutions in Swift 5
Creator: diwu
Stars ⭐️: 1.5k
Forked By : 213
GitHub Repo: https://github.com/diwu/LeetCode-Solutions-in-Swift
#Swift_5
➖➖➖➖➖➖➖➖➖➖➖➖➖➖
Join @coding_interview_preparation for more interview questions.
*This channel belongs to @bigdataspecialist group
GitHub
GitHub - diwu/LeetCode-Solutions-in-Swift: LeetCode Solutions in Swift 5
LeetCode Solutions in Swift 5. Contribute to diwu/LeetCode-Solutions-in-Swift development by creating an account on GitHub.
👍2
Suppose we have a text "human" that we want to convert into string without using the "new" operator. Which is the correct way from the following to do so:
Anonymous Quiz
32%
toString()
14%
String(human)
14%
String newvariable="human"
40%
Both human.toString() and String(human)
Top 10 TypeScript Interview Questions and Answers for Beginner Web Developers
Typescript interview questions 2021 are what we are going to explore in this article. Microsoft has developed typescript. It is an open source language. One can say that TypeScript is the subset of JavaScript. We use TypeScript when we are to develop large applications.We rely on TypeScript in case we are to build JavaScript applications on both server and client side.
Even though we identify TypeScript as a programming language, there is nothing wrong in considering it as a toolset as well. TypeScript is portable, and it supports several JavaScript libraries. Here in this article, we are going to look at Typescript interview questions one might encounter.
🔗Article Link
Typescript interview questions 2021 are what we are going to explore in this article. Microsoft has developed typescript. It is an open source language. One can say that TypeScript is the subset of JavaScript. We use TypeScript when we are to develop large applications.We rely on TypeScript in case we are to build JavaScript applications on both server and client side.
Even though we identify TypeScript as a programming language, there is nothing wrong in considering it as a toolset as well. TypeScript is portable, and it supports several JavaScript libraries. Here in this article, we are going to look at Typescript interview questions one might encounter.
🔗Article Link
Suppose we have a text "human" that we want to convert into string without using the "new" operator. Which is the correct way from the following to do so:
Anonymous Quiz
24%
toString()
15%
String(human)
18%
String newvariable="human"
42%
Both human.toString() and String(human)
👏4👍2
Technical Interviewing: Ultimate Guide to Acing Your Tech Interview
The technical interview is unlike any other job interview: it’s a specialized, rigorous process that tests your coding skills, problem-solving abilities, and personality.
But even though interviewing for a tech job is intimidating (with whiteboard challenges, remote coding challenges, and even full days of onsite interviews sometimes), it’s a lot easier when you know what to expect and have invested time into tech interview prep.
That’s why I wanted to create an epic, comprehensive guide to technical interviews and coding interview preparation for tech newbies!
🔗 Article Link
The technical interview is unlike any other job interview: it’s a specialized, rigorous process that tests your coding skills, problem-solving abilities, and personality.
But even though interviewing for a tech job is intimidating (with whiteboard challenges, remote coding challenges, and even full days of onsite interviews sometimes), it’s a lot easier when you know what to expect and have invested time into tech interview prep.
That’s why I wanted to create an epic, comprehensive guide to technical interviews and coding interview preparation for tech newbies!
🔗 Article Link
👍3
Which exception is thrown when java is out of memory?
Anonymous Quiz
6%
MemoryError
24%
OutOfMemoryError
57%
MemoryOutOfBoundsException
12%
MemoryFullException
👍4😁1
What is the data type of "PI" for the below statement:
#define PI 3.141
#define PI 3.141
Anonymous Quiz
36%
Float data type
29%
Double data type
24%
There is no data type associated with PI
10%
Syntax error, semi colon is missing with definition of PI
👏3