Red Gem: The Pop() Function

Red gem is a powerful Ruby library that includes various data structures and algorithms. One of the most essential functions of the red gem is the pop() function, which helps in removing the last element from an array or a stack.

Syntax

The syntax for pop() is as follows:

array_name.pop

Parameters

The pop() function does not require any parameters to be passed.

Return Value

The function returns the last element of the array or stack. If the array or the stack is empty, it returns nil.

Examples

# Declare an array with some elements
my_array = [1, 2, 3, 4, 5]

# Remove the last element from the array
my_array.pop

# Output the updated array
p my_array  # [1, 2, 3, 4]

# Declare a stack
my_stack = []

# Push some elements into the stack
my_stack.push('red', 'green', 'blue')

# Remove the last element from the stack
my_stack.pop

# Output the updated stack
p my_stack  # ["red", "green"]

Overall, the pop() function is a crucial tool to modifying arrays and stacks in Ruby programming.