How does Ruby handle blocks and procs?

Ruby, a dynamic, reflective, object-oriented programming language, provides powerful tools like blocks and procs that enhance its flexibility and functionality.

Defining Blocks in Ruby

In Ruby, blocks are chunks of code enclosed within either curly braces { } or do..end keywords. They can be defined inline without a name and are characterized by their ability to be passed around as arguments.

Passing Blocks as Arguments in Ruby

Blocks can be passed as arguments to methods by using the ampersand (&) symbol before the block parameter. This allows methods to execute the block of code within their context.

Executing Blocks in Ruby Methods

Methods in Ruby can yield control to a block using the yield keyword. This enables the block to be executed within the context of the method, providing a way to inject custom behavior into the method's execution.

Power of Blocks and Procs in Ruby

Blocks and procs provide a flexible and powerful way to add custom behavior, iterate over collections, and handle callbacks in Ruby programming. Their ability to be passed around as objects makes them incredibly versatile tools for writing expressive and succinct code.