Database Management Exam > Database Management Videos > The Julia Computer Language: Numerical Analysis and Computational Science > Lesson 04_08 Stabby functions and do blocks
Lesson 04_08 Stabby functions and do blocks Video Lecture | The Julia Computer Language: Numerical Analysis and Computational Science - Database Management
FAQs on Lesson 04_08 Stabby functions and do blocks Video Lecture - The Julia Computer Language: Numerical Analysis and Computational Science - Database Management
| 1. What are stabby functions in Ruby? |  |
Ans. Stabby functions, also known as lambda functions or anonymous functions, are a shorthand syntax in Ruby for defining small, one-line functions. They are often used when a function is only needed in a specific context and does not need a formal name.
| 2. How do you define a stabby function in Ruby? | |
Ans. To define a stabby function in Ruby, you can use the `->` (dash, greater than) syntax. For example, `add = ->(x, y) { x + y }` defines a stabby function called `add` that takes two arguments and returns their sum.
| 3. What is a do block in Ruby? | |
Ans. A do block in Ruby is a way to group multiple lines of code together and pass it as an argument to a method. It is often used with methods that expect a block of code to be executed, such as iterators or database management methods.
| 4. How do you use a do block in Ruby? | |
Ans. To use a do block in Ruby, you can either use the `do...end` syntax or the curly braces `{...}` syntax. For example, you can write `5.times do |i| puts i end` or `5.times { |i| puts i }` to execute the block of code five times, each time with the `i` variable representing the current iteration.
| 5. How are stabby functions and do blocks related in Ruby? | |
Ans. Stabby functions and do blocks are both ways to define and execute blocks of code in Ruby. While stabby functions are often used for small, one-line functions, do blocks are used for larger blocks of code that need to be executed within a specific context, such as iterating over a collection or performing database operations. Both stabby functions and do blocks provide flexibility and readability in Ruby programming.
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Nov 24, 2024 Last updated |
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