Ruby - Array Arrays Creating

Introduction

Ruby uses square brackets to delimit an array.

You can create an array, fill it with some comma-delimited values, and assign it to a variable:

arr = ['one','two','three','four'] 

Ruby arrays are objects. They are defined by the Array class and indexed from 0.

You can reference an item in an array by placing its index between square brackets.

If the index is invalid, nil is returned:

Demo

arr = ['a', 'b', 'c'] 
puts(arr[0])      # shows 'a' 
puts(arr[1])      # shows 'b' 
puts(arr[2])      # shows 'c' 
puts(arr[3])      # nil
# from   w  ww  . j a va  2  s  . com

Result

Related Topic

• Array
• Accessing the First and Last elements of the array
• Array Empty checking
• Array membership check?
• Reversing the Order of the array's elements
• Array Type
• Create an array of single-quoted strings without typing all the quotation marks
• Array element with yield value
• Using Array.new method
• Multidimensional Arrays
• Using iterator for nested array

• Previous
• Next