meaning of {} in ruby

Meaning of {} in Ruby

In Ruby, the curly braces {} are used to define a block of code or to create a hash, which is a collection of key-value pairs. When used to define a block, the curly braces are often used with methods that accept a block of code as an argument. When used to create a hash, the curly braces are used to enclose the key-value pairs within the hash.

Defining a Block of Code: In Ruby, curly braces are often used to define a block of code. For example:

3.times { puts "Hello, world!" }

This code will print "Hello, world!" three times.

Creating a Hash: Curly braces are also used to create a hash in Ruby. For example:

my_hash = { "name" => "John", "age" => 30 }

In this example, the curly braces are used to enclose the key-value pairs within the hash.