27 lines
995 B
Markdown
27 lines
995 B
Markdown
---
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title: Learn About Ruby Arrays
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---
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### Basics:
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* Arrays are a list of indexed items stored inside `<a href='http://ruby-doc.org/core-2.2.0/Array.html' target='_blank' rel='nofollow'>]` brackets.
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* Ruby uses zero-based indexing. This means the first item in the array is stored in index number `0`, then the second is at index number `1`, and so on incrementing by values of 1 for each additional item stored in the array.
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* Arrays can be created using `[]` or `Array.new` syntax.
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* Ruby has many build in methods to perform operations on arrays such as reversing or finding an element stored in the array.
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## Examples:
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arr = [1,2,3]
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# is equivalent to:
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arr = Array.new(3)
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arr[0] = 1
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arr[1] = 2
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arr[2] = 3
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# is also equivalent to:
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arr = Array(1..3)
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# All three of these examples return:
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[1,2,3]
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## References:
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* <a href = "https://docs.ruby-lang.org/en/2.0.0/Array.html" target = '_blank'> The official Ruby documentation for arrays</a>.
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