conditional_assignment_operator.rb

# Conditional assignment operator
# The conditional assignment operator `||=` is used to assign a value to a variable only if the variable is currently `nil` or `false`. 
# This can be useful for setting default values or initializing variables.

# Example usage:
name = nil
name ||= "Guest"
puts name # Output: Guest

age = 25
age ||= 30
puts age # Output: 25

is_active = false
is_active ||= 'ok'
puts is_active # Output: 'ok'

# In the first example, since `name` is `nil`, it gets assigned the value "Guest". In the second example, since `age` already has a value (25), it does not get reassigned to 30.
# The conditional assignment operator is a shorthand for the following code:
name = name || "Guest"
age = age || 30

# You can read the official docs for more details.