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# Features

mruby is an implementation of the Ruby programming language.
These documents are describing the language features and libraries
which are provided together with mruby.

## Core Classes and Modules

### Array

The class Array is an implementation of the Array data type in Ruby

[Wikipedia - Array data type](http://en.wikipedia.org/wiki/Array_data_type)
> In computer science, an array type is a data type that is meant to describe
> a collection of elements (values or variables), each selected by one or
> more indices (identifying keys) that can be computed at run time by the
> program.

#### Methods

##### *

##### +

##### <<

##### []

##### []=

##### clear

##### concat

##### delete_at

##### empty?

##### first

##### index

##### initialize_copy

##### join

##### last

##### length

##### pop

##### push

##### replace

##### reverse

##### reverse!

##### rindex

##### shift

##### size

##### slice

##### unshift

##### inspect

##### to_s

##### ==

##### eql?

##### <=>

### Class

### Comparable

### Enumerable

### Hash

### Numeric

### Object

### Proc

### Range

### String

### Symbol

## Standard Library