Contents

Introduction
Installation
Using as a XojoScript replacement
- Installation
- Customising
Using the intepreter
Overview and examples
- Hello World!
- Fibonacci sequence
Syntax and semantics
- Comments
- Data types
  - Array
  - Boolean
  - DateTime
  - File
  - Hash
  - Nothing
  - Number
  - Regex
  - Request
  - Response
  - Text
- Reserved words
- Identifiers
- Variables
- Assignment
- Operators
- Control flow
  - if
  - Ternary operator
  - while
  - break
  - exit
  - for
- Functions
- Object system
  - Classes
  - Modules
  - Static methods
- Requiring files
- Standard library
  - FileUtils module
    - Getters
      - cwd
      - cwd_path
    - Methods
      - copy()
      - delete()
      - mkdir()
      - move()
  - HTTP module
    - Methods
      - delete()
      - get()
      - post()
      - put()
  - JSON module
    - Methods
      - generate()
      - parse()
  - Maths module
    - Getters
      - PI
    - Methods
      - random_int()
  - Roo module
    - Getters
      - clock
      - version
  - Global functions
    - input()
    - print()
  - All objects
    - Getters
      - nothing?
      - number?
      - to_text
      - type
    - Methods
      - responds_to?()
  - Array objects
    - Getters
      - empty?
      - length
      - pop
      - reverse!
      - shuffle!
      - unique
      - unique!
    - Methods
      - contains?()
      - delete_at!()
      - each()
      - each_index()
      - fetch()
      - find()
      - first()
      - first!()
      - insert!()
      - join()
      - keep()
      - keep!()
      - last()
      - map()
      - map!()
      - push()
      - reject()
      - reject!()
      - shift!()
      - slice()
      - slice!()
  - DateTime objects
    - Getters
      - two_digit_hour
      - two_digit_minute
      - two_digit_second
      - day_name
      - friday?
      - hour
      - leap?
      - long_month
      - mday
      - meridiem
      - minute
      - monday?
      - month
      - nanosecond
      - saturday?
      - second
      - short_month
      - sunday?
      - thursday?
      - time
      - to_http_header
      - today?
      - tomorrow?
      - tuesday?
      - unix_time
      - wday
      - wednesday?
      - yday
      - yesterday?
      - year
    - Methods
  - File objects
    - Getters
      - close
      - closed?
      - count
      - directory?
      - exists?
      - file?
      - flush
      - name
      - path
      - pos
      - read_all
      - read_int8
      - read_int16
      - read_int32
      - read_int64
      - read_lines
      - read_uint8
      - read_uint16
      - read_uint32
      - read_uint64
      - readable?
      - writeable?
    - Setters
      - path
      - pos
    - Methods
      - append()
      - append_line()
      - copy_to()
      - delete!()
      - each_byte()
      - each_char()
      - each_line
      - move_to()
      - read()
      - write()
      - write_line()
  - Hash objects
    - Getters
      - clear!
      - invert
      - invert!
      - keys
      - length
      - values
    - Methods
      - delete!()
      - each()
      - each_key()
      - each_value()
      - fetch()
      - fetch_values()
      - has_key?()
      - has_value?()
      - keep()
      - keep!()
      - merge()
      - merge!()
      - reject()
      - reject!()
      - value()
  - Number objects
    - Getters
      - abs
      - acos
      - asin
      - atan
      - ceil
      - cos
      - even?
      - floor
      - integer?
      - odd?
      - round
      - sign
      - sin
      - sqrt
      - tan
      - to_degrees
      - to_radians
  - MatchInfo objects
    - Getters
      - finish
      - start
      - value
  - Regex objects
    - Methods
      - match()
      - matches()
  - RegexMatch objects
    - Getters
      - captures
      - finish
      - start
      - value
    - Methods
      - group()
      - name()
  - RegexResult objects
    - Getters
    - Methods
      - match()
  - Request objects
    - Getters
      - content
      - content_type
      - cookies
      - headers
      - host
      - if_modified_since
      - method
      - referer
      - send
      - timeout
      - url
      - user_agent
    - Setters
      - content
      - content_type
      - cookies
      - headers
      - host
      - if_modified_since
      - method
      - referer
      - timeout
      - url
      - user_agent
  - Response objects
    - Getters
  - Text objects
    - Getters
      - capitalise
      - capitalise!
      - chars
      - define_utf8
      - define_utf8!
      - empty?
      - length
      - lowercase
      - lowercase!
      - lstrip
      - lstrip!
      - reverse
      - reverse!
      - rstrip
      - rstrip!
      - strip
      - strip!
      - swapcase
      - swapcase!
      - to_date
      - uppercase
      - uppercase!
    - Methods

The standard library

Like any good programming language, Roo has a standard library of modules, functions and built-in data types for you to use. This section details every method, getter and property available in the standard library.