Ruby

✦Tutorial Intro

Ruby

✦Overview

Ruby

✦Features

Ruby

✦Ruby vs Python

Ruby

✦ Environment Setup

Ruby

✦Hello world Program

Ruby

✦Syntax

Ruby

✦Comments

Ruby

✦Variables

Ruby

✦Local Variables

Ruby

✦Instance Variables

Ruby

✦Class Variables

Ruby

✦Global Variables

Ruby

✦Constants

Ruby

✦Pseudo Variables

Ruby

✦Pre-defined Variables

Ruby

✦Unary operator

Ruby

✦Airthmetic operator

Ruby

✦Bitwise operator

Ruby

✦Logical operator

Ruby

✦Ternary operator

Ruby

✦Assignment operator

Ruby

✦Comparison operator

Ruby

✦Range operator

Ruby

✦String

Ruby

✦Fixnum

Ruby

✦Integer

Ruby

✦Numeric

Ruby

✦Float

Ruby

✦NilClass

Ruby

✦Hash

Ruby

✦Symbol

Ruby

✦Array

Ruby

✦Range

Ruby

✦if

Ruby

✦unless

Ruby

✦case

Ruby

✦Loops

Ruby

✦while

Ruby

✦until

Ruby

✦for

Ruby

✦for ... in

Ruby

✦break

Ruby

✦redo

Ruby

✦next

Ruby

✦retry

Ruby

✦object Overview

Ruby

✦Variables and objects

Ruby

✦Methods

Ruby

✦Reassigning a variable

Ruby

✦Classes overview

Ruby

✦Defining Classes

Ruby

✦Objects and Attributes

Ruby

✦Creating Instances of a Class

Ruby

✦Self

Ruby

✦Class Methods

Ruby

✦Classes Working with Other Classes

Ruby

✦Specifying Access Control

Ruby

✦Declaring Visibility

Ruby

✦Private

Ruby

✦Public

Ruby

✦Protected

Ruby

✦Instance Variables

Ruby

✦Variables

Ruby

✦Reopening Classes

Ruby

✦Method definition

Ruby

✦Invoking methods

Ruby

✦Default values

Ruby

✦Returning values

Ruby

✦Dynamic methods

Ruby

✦Special methods

Ruby

✦Ruby Blocks

Ruby

✦yield

Ruby

✦begin...end

Ruby

✦passing block to method

Ruby

✦Procs

Ruby

✦Ruby Modules

Ruby

✦mixins

Ruby

✦Ruby Strings Overview

Ruby

✦Substitution Methods

Ruby

✦Whitespace in Strings

Ruby

✦String Slices

Ruby

✦Creating a String

Ruby

✦a Frozen/Unfrozen String

Ruby

✦Querying

Ruby

✦Comparing

Ruby

✦Converting to New String

Ruby

✦Converting to Non-String

Ruby

✦Iterating

Ruby

✦Ruby Arrays Overview

Ruby

✦Creating Arrays

Ruby

✦Accessing Elements

Ruby

✦Obtaining Information about an Array

Ruby

✦Adding Items to Arrays

Ruby

✦Removing Items from an Array

Ruby

✦Iterating over Arrays

Ruby

✦Selecting Items from an Array

Ruby

✦Non-destructive Selection

Ruby

✦Destructive Selection

Ruby

✦Ruby Hashes Overview

Ruby

✦Creating a Hash

Ruby

✦Hash Value Basics

Ruby

✦Entry Order

Ruby

✦Hash Keys

Ruby

✦Hash Key Equivalence

Ruby

✦Modifying an Active Hash Key

Ruby

✦User-Defined Hash Keys

Ruby

✦Default Values

Ruby

✦Default Proc

Ruby

✦Setting Hash State

Ruby

✦Querying

Ruby

✦Comparing

Ruby

✦Fetching

Ruby

✦Assigning

Ruby

✦Deleting

Ruby

✦Iterating

Ruby

✦Converting

Ruby

✦Transforming Keys and Values

Ruby

✦Date & Time

Ruby

✦Ranges

Ruby

✦Iterators

Ruby

✦Directories

Ruby

✦Exceptions

Ruby

✦The Exception Class

Ruby

✦Exception handling overview

Ruby

✦Raising Exceptions

Ruby

✦Using Catch and Throw

Ruby

✦About IO

Ruby

✦Opening and Closing Files

Ruby

✦Reading and Writing Files

Ruby

✦Threads, Fibers, and Ractors

Ruby

✦Multithreading with Threads

Ruby

✦Running Multiple External Processes

Ruby

✦Creating Fibers

Ruby

✦Understanding Ractors

Ruby

✦Ruby OOPs

Ruby

✦Ruby Regex

Ruby

✦Ruby Socket

Ruby

✦Ruby LDAP

Ruby

✦Ruby XML

Ruby

✦Ruby XPATH XSLT

Ruby

✦new

Ruby

✦try_convert

Ruby

✦[]

Ruby

✦[]=

Ruby

✦append_as_bytes

Ruby

✦ascii_only?

Ruby

✦b

Ruby

✦byteindex

Ruby

✦byterindex

Ruby

✦bytes

Ruby

✦bytesize

Ruby

✦byteslice

Ruby

✦bytesplice

Ruby

✦capitalize

Ruby

✦capitalize!

Ruby

✦casecmp

Ruby

✦casecmp?

Ruby

✦center

Ruby

✦chars

Ruby

✦chomp

Ruby

✦chomp!

Ruby

✦chop

Ruby

✦chop!

Ruby

✦chr

Ruby

✦clear

Ruby

✦codepoints

Ruby

✦concat

Ruby

✦count

Ruby

✦crypt

Ruby

✦dedup

Ruby

✦delete

Ruby

✦delete!

Ruby

✦delete_prefix

Ruby

✦delete_prefix!

Ruby

✦delete_suffix

Ruby

✦delete_suffix!

Ruby

✦downcase

Ruby

✦downcase!

Ruby

✦dump

Ruby

✦each_byte

Ruby

✦each_char

Ruby

✦each_codepoint

Ruby

✦each_grapheme_cluster

Ruby

✦each_line

Ruby

✦empty?

Ruby

✦encode

Ruby

✦encode!

Ruby

✦encoding

Ruby

✦end_with?

Ruby

✦eql?

Ruby

✦force_encoding

Ruby

✦getbyte

Ruby

✦grapheme_clusters

Ruby

✦gsub

Ruby

✦gsub!

Ruby

✦hash

Ruby

✦hex

Ruby

✦include?

Ruby

✦index

Ruby

✦initialize_copy

Ruby

✦insert

Ruby

✦inspect

Ruby

✦intern

Ruby

✦length

Ruby

✦lines

Ruby

✦ljust

Ruby

✦lstrip

Ruby

✦lstrip!

Ruby

✦match

Ruby

✦match?

Ruby

✦next

Ruby

✦next!

Ruby

✦oct

Ruby

✦ord

Ruby

✦partition

Ruby

✦prepend

Ruby

✦replace

Ruby

✦reverse

Ruby

✦reverse!

Ruby

✦rindex

Ruby

✦rjust

Ruby

✦rpartition

Ruby

✦rstrip

Ruby

✦rstrip!

Ruby

✦scan

Ruby

✦scrub

Ruby

✦scrub!

Ruby

✦setbyte

Ruby

✦shellescape

Ruby

✦shellsplit

Ruby

✦size

Ruby

✦slice

Ruby

✦slice!

Ruby

✦split

Ruby

✦squeeze

Ruby

✦squeeze!

Ruby

✦start_with?

Ruby

✦strip

Ruby

✦strip!

Ruby

✦sub

Ruby

✦sub!

Ruby

✦succ

Ruby

✦succ!

Ruby

✦sum

Ruby

✦swapcase

Ruby

✦swapcase!

Ruby

✦to_c

Ruby

✦to_f

Ruby

✦to_i

Ruby

✦to_r

Ruby

✦to_s

Ruby

✦to_str

Ruby

✦to_sym

Ruby

✦tr

Ruby

✦tr!

Ruby

✦tr_s

Ruby

✦tr_s!

Ruby

✦undump

Ruby

✦unicode_normalize

Ruby

✦unicode_normalize!

Ruby

✦unicode_normalized?

Ruby

✦unpack

Ruby

✦unpack1

Ruby

✦upcase

Ruby

✦upcase!

Ruby

✦upto

Ruby

✦valid_encoding?

Ruby

✦as_json

Ruby

✦capitalize

Ruby

✦casecmp

Ruby

✦casecmp?

Ruby

✦downcase

Ruby

✦empty?

Ruby

✦encoding

Ruby

✦end_with?

Ruby

✦id2name

Ruby

✦inspect

Ruby

✦intern

Ruby

✦length

Ruby

✦match

Ruby

✦match?

Ruby

✦name

Ruby

✦next

Ruby

✦size

Ruby

✦slice

Ruby

✦start_with?

Ruby

✦succ

Ruby

✦swapcase

Ruby

✦to_json

Ruby

✦to_proc

Ruby

✦to_s

Ruby

✦to_sym

Ruby

✦upcase

Ruby

✦new

Ruby

✦try_convert

Ruby

✦all?

Ruby

✦any?

Ruby

✦append

Ruby

✦assoc

Ruby

✦at

Ruby

✦bsearch

Ruby

✦bsearch_index

Ruby

✦clear

Ruby

✦collect

Ruby

✦collect!

Ruby

✦combination

Ruby

✦compact

Ruby

✦compact!

Ruby

✦concat

Ruby

✦count

Ruby

✦cycle

Ruby

✦delete

Ruby

✦delete_at

Ruby

✦delete_if

Ruby

✦difference

Ruby

✦dig

Ruby

✦drop

Ruby

✦drop_while

Ruby

✦each

Ruby

✦each_index

Ruby

✦empty?

Ruby

✦eql?

Ruby

✦fetch

Ruby

✦fetch_values

Ruby

✦fill

Ruby

✦filter

Ruby

✦filter!

Ruby

✦find_index

Ruby

✦first

Ruby

✦flatten

Ruby

✦flatten!

Ruby

✦freeze

Ruby

✦hash

Ruby

✦include?

Ruby

✦index

Ruby

✦initialize_copy

Ruby

✦insert

Ruby

✦inspect

Ruby

✦intersect?

Ruby

✦intersection

Ruby

✦join

Ruby

✦keep_if

Ruby

✦last

Ruby

✦length

Ruby

✦map

Ruby

✦map!

Ruby

✦max

Ruby

✦min

Ruby

✦minmax

Ruby

✦none?

Ruby

✦one?

Ruby

✦pack

Ruby

✦permutation

Ruby

✦pop

Ruby

✦prepend

Ruby

✦product

Ruby

✦push

Ruby

✦rassoc

Ruby

✦reject

Ruby

✦reject!

Ruby

✦repeated_combination

Ruby

✦repeated_permutation

Ruby

✦replace

Ruby

✦reverse

Ruby

✦reverse!

Ruby

✦reverse_each

Ruby

✦rindex

Ruby

✦rotate

Ruby

✦rotate!

Ruby

✦sample

Ruby

✦select

Ruby

✦select!

Ruby

✦shelljoin

Ruby

✦shift

Ruby

✦shuffle

Ruby

✦shuffle!

Ruby

✦size

Ruby

✦slice

Ruby

✦slice!

Ruby

✦sort

Ruby

✦sort!

Ruby

✦sort_by!

Ruby

✦sum

Ruby

✦take

Ruby

✦take_while

Ruby

✦to_a

Ruby

✦to_ary

Ruby

✦to_h

Ruby

✦to_s

Ruby

✦transpose

Ruby

✦union

Ruby

✦uniq

Ruby

✦uniq!

Ruby

✦unshift

Ruby

✦values_at

Ruby

✦zip

Ruby

✦new

Ruby

✦ruby2_keywords_hash

Ruby

✦ruby2_keywords_hash?

Ruby

✦try_convert

Ruby

✦any?

Ruby

✦assoc

Ruby

✦clear

Ruby

✦compact

Ruby

✦compact!

Ruby

✦compare_by_identity

Ruby

✦compare_by_identity?

Ruby

✦default

Ruby

✦default=

Ruby

✦default_proc

Ruby

✦default_proc=

Ruby

✦delete

Ruby

✦delete_if

Ruby

✦dig

Ruby

✦each

Ruby

✦each_key

Ruby

✦each_pair

Ruby

✦each_value

Ruby

✦empty?

Ruby

✦eql?

Ruby

✦except

Ruby

✦fetch

Ruby

✦fetch_values

Ruby

✦filter

Ruby

✦filter!

Ruby

✦flatten

Ruby

✦has_key?

Ruby

✦has_value?

Ruby

✦hash

Ruby

✦include?

Ruby

✦initialize_copy

Ruby

✦inspect

Ruby

✦invert

Ruby

✦keep_if

Ruby

✦key

Ruby

✦key?

Ruby

✦keys

Ruby

✦length

Ruby

✦member?

Ruby

✦merge

Ruby

✦merge!

Ruby

✦rassoc

Ruby

✦rehash

Ruby

✦reject

Ruby

✦reject!

Ruby

✦replace

Ruby

✦select

Ruby

✦select!

Ruby

✦shift

Ruby

✦size

Ruby

✦slice

Ruby

✦store

Ruby

✦to_a

Ruby

✦to_h

Ruby

✦to_hash

Ruby

✦to_proc

Ruby

✦to_s

Ruby

✦transform_keys

Ruby

✦transform_keys!

Ruby

✦transform_values

Ruby

✦transform_values!

Ruby

✦update

Ruby

✦value?

Ruby

✦values

Ruby

✦values_at

Ruby

✦at

Ruby

✦gm

Ruby

✦httpdate

Ruby

✦iso8601

Ruby

✦json_create

Ruby

✦local

Ruby

✦mktime

Ruby

✦new

Ruby

✦now

Ruby

✦parse

Ruby

✦rfc2822

Ruby

✦rfc822

Ruby

✦strptime

Ruby

✦utc

Ruby

✦xmlschema

Ruby

✦zone_offset

Ruby

✦as_json

Ruby

✦asctime

Ruby

✦ceil

Ruby

✦ctime

Ruby

✦day

Ruby

✦deconstruct_keys

Ruby

✦dst?

Ruby

✦eql?

Ruby

✦floor

Ruby

✦friday?

Ruby

✦getgm

Ruby

✦getlocal

Ruby

✦getutc

Ruby

✦gmt?

Ruby

✦gmt_offset

Ruby

✦gmtime

Ruby

✦gmtoff

Ruby

✦hash

Ruby

✦hour

Ruby

✦inspect

Ruby

✦isdst

Ruby

✦localtime

Ruby

✦mday

Ruby

✦min

Ruby

✦mon

Ruby

✦monday?

Ruby

✦month

Ruby

✦nsec

Ruby

✦round

Ruby

✦saturday?

Ruby

✦sec

Ruby

✦strftime

Ruby

✦subsec

Ruby

✦sunday?

Ruby

✦thursday?

Ruby

✦to_a

Ruby

✦to_date

Ruby

✦to_datetime

Ruby

✦to_f

Ruby

✦to_i

Ruby

✦to_json

Ruby

✦to_r

Ruby

✦to_s

Ruby

✦to_time

Ruby

✦tuesday?

Ruby

✦tv_nsec

Ruby

✦tv_sec

Ruby

✦tv_usec

Ruby

✦usec

Ruby

✦utc?

Ruby

✦utc_offset

Ruby

✦wday

Ruby

✦wednesday?

Ruby

✦yday

Ruby

✦year

Ruby

✦zone

Ruby

✦compile

Ruby

✦escape

Ruby

✦json_create

Ruby

✦last_match

Ruby

✦linear_time?

Ruby

✦new

Ruby

✦quote

Ruby

✦timeout

Ruby

✦timeout=

Ruby

✦try_convert

Ruby

✦union

Ruby

✦as_json

Ruby

✦casefold?

Ruby

✦encoding

Ruby

✦eql?

Ruby

✦fixed_encoding?

Ruby

✦hash

Ruby

✦inspect

Ruby

✦match

Ruby

✦match?

Ruby

✦named_captures

Ruby

✦names

Ruby

✦options

Ruby

✦source

Ruby

✦to_json

Ruby

✦to_s

Ruby

✦json_create

Ruby

✦new

Ruby

✦as_json

Ruby

✦begin

Ruby

✦bsearch

Ruby

✦count

Ruby

✦cover?

Ruby

✦each

Ruby

✦end

Ruby

✦entries

Ruby

✦eql?

Ruby

✦exclude_end?

Ruby

✦first

Ruby

✦hash

Ruby

✦include?

Ruby

✦inspect

Ruby

✦last

Ruby

✦max

Ruby

✦member?

Ruby

✦min

Ruby

✦minmax

Ruby

✦overlap?

Ruby

✦reverse_each

Ruby

✦size

Ruby

✦step

Ruby

✦to_a

Ruby

✦to_json

Ruby

✦to_s

Ruby

✦acos

Ruby

✦acosh

Ruby

✦asin

Ruby

✦asinh

Ruby

✦atan

Ruby

✦atan2

Ruby

✦atanh

Ruby

✦cbrt

Ruby

✦cos

Ruby

✦cosh

Ruby

✦erf

Ruby

✦erfc

Ruby

✦exp

Ruby

✦frexp

Ruby

✦gamma

Ruby

✦hypot

Ruby

✦ldexp

Ruby

✦lgamma

Ruby

✦log

Ruby

✦log10

Ruby

✦log2

Ruby

✦sin

Ruby

✦sinh

Ruby

✦sqrt

Ruby

✦tan

Ruby

✦tanh