What are some real-world examples of procs in programming?

What are some real-world examples of procs in programming?

Procs, or procedures, are often used in programming for tasks like event handling, callbacks, and data processing. For example, in Ruby, procs can be used to encapsulate blocks of code that can be executed later.

Can you give me a specific example in Ruby?

Sure! In Ruby, you can define a proc like this: my_proc = Proc.new { |x| x * 2 }. You can then call it with my_proc.call(5), which would return 10.

Are there other programming languages that use procs?

Yes, many languages have similar concepts. For instance, JavaScript has functions as first-class citizens, allowing you to pass functions around just like procs.

How do procs differ from regular functions?

Procs can capture the surrounding context, meaning they can access variables from their defining scope, while regular functions may not have this capability.