Ruby examples (example source code) Organized by topic

Ruby

1. ActiveRecord

2. Array

3. CGI

4. Class

5. Collections

6. Database

7. Date

8. Design Patterns

9. Development

10. File Directory

11. GUI

12. Hash

13. Language Basics

14. Method

15. Network

16. Number

17. Rails

18. Range

19. Reflection

20. Statement

21. String

22. Threads

23. Time

24. Tk

25. Unit Test

26. Windows Platform

27. XML

Java

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SQL / MySQL

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Flash / Flex / ActionScript

VBA / Excel / Access / Word

Microsoft Office PowerPoint 2007 Tutorial

Microsoft Office Excel 2007 Tutorial

Microsoft Office Word 2007 Tutorial

Ruby

Rails ActiveRecord Unit Test

Rails

Action( 4 ) Application Framework( 1 ) Controller( 1 ) Cookie( 1 ) Environment( 1 ) ERB( 7 )

Form Checkbox( 1 ) Form RadioButton( 1 ) Form Select( 2 ) Form TextField( 1 ) Form( 2 ) Model( 3 )

Rails( 1 ) Session( 1 ) View( 4 )

ActiveRecord

Assumption from ActiveRecord( 3 ) Connection String( 1 ) Delete( 4 ) Insert( 1 ) Map to SQL( 6 ) One to Many( 2 )

Primary key( 1 ) Search( 9 ) Table Name( 6 ) Transactions( 1 ) Update( 2 )

Unit Test

assert( 5 ) Unit Testing( 10 )

CGI Network Threads

CGI

CGI Form( 5 ) CGI Variables( 1 ) CGI( 2 ) Cookie( 1 ) HTML( 9 ) Parameters( 1 )

Session( 2 )

Network

action_mailer( 2 ) Authentication( 1 ) DNS( 2 ) Email POP3( 8 ) FTP Client( 14 ) Ftp( 1 )

hpricot HTML Parsing( 5 ) HTML Builder( 2 ) HTML Parser( 4 ) HTTP Post( 5 ) HTTP Reponse( 11 ) HTTPS( 5 )

IMAP( 1 ) IP Address( 4 ) mongrel Web Server( 2 ) net http library( 3 ) open uri( 10 ) ping( 4 )

Proxy( 2 ) RSS( 2 ) Ruby remoting( 4 ) Server by gserver( 4 ) SOAP( 3 ) ssh( 4 )

TCP Server( 4 ) TCPSocket( 3 ) Telnet( 2 ) UDP Client( 1 ) UDP Server( 2 ) URI( 10 )

Webrick Web Server( 3 ) XML RPC( 2 ) xmlrpc( 8 )

Threads

abort_on_exception( 2 ) alive( 1 ) critical( 1 ) Daemon( 3 ) exit( 1 ) fork( 6 )

join( 6 ) kill( 1 ) Mutex( 2 ) pass( 1 ) priority( 2 ) Process( 1 )

raise( 1 ) Ruby Threads( 4 ) run( 1 ) safe_level( 1 ) SizedQueue( 1 ) sleep( 5 )

status( 1 ) stop( 2 ) Synchronization( 6 ) Thread.main( 2 ) Thread.new( 6 ) Thread.pass( 1 )

wakeup( 2 )

Array Hash Range Collections

Array

Array Addition( 3 ) Array Creation( 15 ) Array Each( 3 ) Array Elements( 9 ) Array Extension( 16 ) Array Index( 11 )

Array Length( 1 ) Array Literal( 2 ) Array Subtraction( 1 ) Array.new( 7 ) As Set( 11 ) clear( 1 )

clone( 1 ) collect( 3 ) combination( 1 ) compact( 1 ) Compare Array( 5 ) concat( 1 )

count( 1 ) cycle( 1 ) delete( 2 ) delete_at( 1 ) drop_while( 1 ) each( 5 )

each_index( 1 ) each_with_index( 1 ) empty( 2 ) fill( 1 ) find_all( 1 ) find_index( 1 )

first( 2 ) freeze( 1 ) grep( 4 ) group_by( 1 ) include( 3 ) inject( 3 )

insert( 1 ) inspect( 2 ) join( 3 ) last( 2 ) map( 4 ) max( 1 )

max_by( 1 ) min( 1 ) Multidimensional Arrays( 7 ) Object array( 1 ) pack( 2 ) permutation( 1 )

Pop( 1 ) Print Array( 1 ) product( 1 ) Push( 5 ) Range Index( 2 ) reject( 2 )

replace( 1 ) reverse( 3 ) reverse_each( 2 ) select( 1 ) shift( 1 ) slice( 4 )

sort( 5 ) step( 1 ) take_while( 1 ) to Hash( 1 ) to String( 2 ) transpose( 1 )

Two Array Indices( 7 ) uniq( 3 ) unpack( 1 ) unshift( 1 )

Hash

assoc( 1 ) clear( 2 ) Compare( 1 ) Converrt to Hash( 1 ) Convert to Array( 1 ) Convert to String( 2 )

default( 2 ) default_proc( 1 ) delete( 4 ) delete_if( 5 ) each( 4 ) each_key( 2 )

each_value( 2 ) empty( 1 ) find( 1 ) freeze( 1 ) Hash Creation( 11 ) Hash Elements( 3 )

Hash Extensions( 4 ) Hash Keys( 11 ) Hash Length( 1 ) Hash values( 3 ) Hash.new( 8 ) has_key( 1 )

has_value( 2 ) include( 1 ) index( 5 ) inject( 2 ) invert( 1 ) Key value( 2 )

member( 1 ) merge( 4 ) Nested hash( 2 ) Print Hash( 4 ) rehash( 1 ) reject( 1 )

replace( 3 ) select( 1 ) shift( 1 ) sort( 2 ) sort_by( 1 ) store( 1 )

update( 1 ) values( 1 ) values_at( 2 )

Range

As Iterator( 4 ) collect( 1 ) Convert to Array( 2 ) Date Range( 4 ) drop( 1 ) each( 3 )

entries( 1 ) find_all( 1 ) first( 1 ) include( 1 ) inject( 2 ) max( 1 )

min( 1 ) minmax( 1 ) minmax_by( 1 ) multi letter based range( 1 ) partition( 1 ) Range Creation( 9 )

Range Extension( 2 ) Range include( 7 ) Range Min Max( 3 ) Range.new( 1 ) reduce( 1 ) reverse_each( 1 )

select( 1 ) take( 1 ) to Set( 1 ) with case( 1 ) with for( 6 ) zip( 1 )

Collections

Comparable( 4 ) Enumerable( 10 ) Forwardable( 3 ) Set( 41 ) Your Hash( 1 ) Your queue( 1 )

Your stack( 1 ) Your tree( 8 )

Number Method Class Reflection

Number

abs( 2 ) between( 1 ) BigDecimal( 12 ) Bignum class( 3 ) Bignum( 1 ) Binary number( 4 )

ceil( 1 ) coerce( 1 ) Complex Numbers( 1 ) Convert from Integer( 1 ) Convert to Char( 3 ) Convert to Float( 4 )

Convert to Integer( 14 ) Convert to String( 8 ) Fixnum class( 6 ) Fixnum extension( 5 ) Float Extension( 3 ) float( 12 )

floor( 1 ) hexadecimal numbers( 3 ) infinite( 4 ) Integer( 12 ) matrix( 4 ) nan( 5 )

next( 4 ) nonzero( 4 ) Number class( 7 ) Number Literal( 7 ) Numeric class( 7 ) octal numbers( 3 )

Prime Numbers( 6 ) Rational Numbers( 16 ) round( 4 ) shift( 2 ) zero( 2 )

Method

alias( 5 ) args( 1 ) binding( 2 ) block_given( 3 ) call( 1 ) Code Block( 16 )

def( 3 ) defined( 1 ) define_method( 3 ) lambda( 6 ) Method Arguments( 12 ) Method Creation( 9 )

Method objects( 1 ) Method Pointer( 4 ) Overloading( 1 ) Procs( 8 ) recursive( 1 ) remove_method( 3 )

return( 10 ) send( 2 ) undef( 1 ) Utility Method( 6 ) Variable Number Arguments( 5 ) yield( 10 )

Class

abstract class( 2 ) Access level( 4 ) attr( 2 ) attr_accessor( 5 ) attr_reader( 4 ) attr_writer( 3 )

child class( 4 ) Class Defintion( 11 ) Class Methods( 4 ) Class Variables( 3 ) clone( 3 ) DelegateClass( 2 )

Encapsulation( 1 ) eql( 2 ) equal( 3 ) freeze( 2 ) getter setter( 9 ) include( 4 )

inheritance( 10 ) initialize class( 5 ) inspect( 2 ) instance variables( 5 ) interface( 1 ) Member method( 6 )

Multiple inheritance( 2 ) nested classes( 2 ) new( 2 ) object Creation( 3 ) Object in Ruby( 4 ) OpenStruct( 1 )

Operator( 2 ) Overriding Methods( 4 ) Polymorphism( 1 ) private( 2 ) Protected( 2 ) Public( 2 )

Readable attributes( 2 ) self( 2 ) singleton method( 4 ) Struct( 1 ) super( 2 ) tainted( 3 )

to String( 4 ) Virtual method( 2 ) Writable Attributes( 2 )

Reflection

ancestors( 2 ) caller( 2 ) Class Reflection( 6 ) class_eval( 2 ) class_variable_get( 1 ) eval( 3 )

extend_object( 1 ) FILE( 1 ) find_all( 1 ) global_variables( 1 ) inherited( 1 ) instance_eval( 1 )

instance_method( 1 ) instance_of( 6 ) instance_variables( 1 ) instance_variable_set( 1 ) is_a( 1 ) kind_of( 3 )

local_variables( 1 ) Method Reflection( 5 ) method_added( 1 ) method_defined( 1 ) method_missing( 6 ) Module Reflection( 2 )

module_eval( 2 ) Object( 7 ) ObjectSpace( 3 ) object_id( 4 ) private_class_method( 1 ) private_instance_methods( 1 )

protected_instance_methods( 1 ) protected_methods( 1 ) remove_const( 1 ) respond_to( 5 ) set_trace_func( 1 ) singleton_methods( 1 )

singleton_method_added( 3 ) superclass( 3 ) variable Reflection( 1 )

Database File Directory XML

Database

dbi drivers( 1 ) dbm( 4 ) Mysql( 1 ) ODBC( 1 ) Oracle( 2 ) postgres( 2 )

pstore( 1 )

File Directory

atime( 2 ) basename( 2 ) Binary File( 7 ) blksize( 1 ) blockdev( 1 ) blocks( 1 )

chardev( 1 ) chdir( 2 ) chmod( 8 ) chown( 1 ) close a file( 1 ) ctime( 2 )

delete( 3 ) dev( 3 ) Dir rewind( 1 ) Dir.delete( 1 ) Dir.entries( 3 ) Dir.foreach( 2 )

Dir.getwd( 1 ) Dir.glob( 1 ) Dir.open( 2 ) Dir.pwd( 1 ) Dir.reject( 2 ) Dir.rmdir( 1 )

Dir( 10 ) directory list( 2 ) directory( 2 ) dirname( 1 ) each byte( 3 ) each line( 2 )

each( 2 ) eof( 1 ) Executable.File( 1 ) executable_real( 1 ) exist( 4 ) expand_path( 1 )

extname( 1 ) File class( 2 ) file handle( 1 ) File position( 2 ) File SEPARATOR( 2 ) File tests( 4 )

File type( 1 ) File.exists( 2 ) File.new( 5 ) file( 1 ) Find( 11 ) flock( 1 )

fnmatch( 2 ) ftype( 2 ) gets( 3 ) gid( 1 ) grpowned( 1 ) identical( 2 )

ino( 1 ) IO.close( 1 ) IO.fileno( 1 ) IO.flush( 1 ) IO.foreach( 2 ) IO.new( 3 )

IO.popen( 4 ) IO.puts( 1 ) IO.read( 3 ) IO.readlines( 2 ) join( 2 ) lock( 1 )

lstat( 2 ) mkdir( 4 ) mode( 1 ) mp3 file( 2 ) mtime( 2 ) nlink( 1 )

Open a File( 9 ) owned( 1 ) path( 1 ) pipe( 1 ) putc( 1 ) puts( 2 )

pwd( 2 ) rdev( 3 ) Read lines together( 3 ) read( 4 ) Readable File( 1 ) readable_real( 1 )

readline( 2 ) readlink( 1 ) rename( 1 ) seek( 2 ) setgid( 1 ) setuid( 1 )

set_encoding( 2 ) size( 4 ) socket( 1 ) split( 1 ) stat( 1 ) sticky( 1 )

StringIO( 7 ) subclass File( 1 ) symlink( 2 ) sysread( 1 ) syswrite( 2 ) tell( 1 )

Tempfile( 4 ) Text file( 8 ) tmpdir( 2 ) truncate( 2 ) uid( 1 ) ungetc( 1 )

unlink( 1 ) unmask( 1 ) Utilities( 10 ) utime( 1 ) Word counter( 4 ) world_readable( 1 )

Writable File( 1 ) writable_real( 1 ) write( 2 ) zero( 1 )

XML

rexml( 18 ) XML Builder( 4 ) xmlparser( 1 ) XPath( 10 ) YAML( 6 )

Date Time String

Date

ajd( 1 ) Date Calculation( 11 ) Date.new( 5 ) DateTime( 16 ) downto( 1 ) gregorian( 1 )

julian( 3 ) mjd( 1 ) next( 2 ) parse( 3 ) strptime( 4 ) to String( 1 )

to Time( 2 ) today( 1 ) upto( 1 )

Time

Compare Time( 2 ) Convert to Date( 1 ) Convert to Integer( 1 ) ctime( 1 ) Day Light Saving( 5 ) day( 1 )

dst( 1 ) gm( 2 ) hour( 1 ) local( 5 ) now( 3 ) strftime( 9 )

Time Calculation( 5 ) Time class( 3 ) Time Extension( 3 ) Time format( 5 ) Time Zones( 2 ) timer( 1 )

utc( 2 ) year( 1 )

String

capitalize( 3 ) casecmp( 2 ) char in string( 14 ) char range( 4 ) chomp( 3 ) chop( 3 )

concat( 2 ) Convert Number( 3 ) Convert to Array( 3 ) Convert to String( 3 ) Convert to Symbol( 2 ) crypt( 1 )

delete( 5 ) downcase( 3 ) dump( 1 ) each( 2 ) each_byte( 6 ) each_char( 3 )

each_line( 1 ) each_with_index( 1 ) empty( 1 ) encoding( 10 ) end_with( 1 ) eq( 1 )

Escape Characters( 14 ) force_encoding( 1 ) freeze( 5 ) grep( 12 ) gsub( 14 ) hash value( 1 )

hash( 1 ) Here Document( 3 ) include( 2 ) index( 4 ) insert( 3 ) intern( 2 )

Justify Center( 5 ) Justify Left( 2 ) Justify Right( 4 ) length( 2 ) lines( 1 ) match( 6 )

matching operator( 2 ) multiply strings( 4 ) next( 8 ) replace( 3 ) reverse( 5 ) scan( 15 )

select( 2 ) slice( 3 ) split( 8 ) squeeze( 1 ) String class Extension( 20 ) String comparisons( 10 )

String Concatenation( 7 ) String format( 5 ) String from Right( 1 ) String Literal( 9 ) String Quotation( 9 ) String Range( 7 )

string variable( 4 ) String.new( 5 ) Strip from Left( 2 ) Strip from right( 1 ) Strip( 5 ) sub with regular expressions( 8 )

sub( 1 ) succ( 3 ) sum( 2 ) swapcase( 2 ) tr( 2 ) tr_s( 1 )

unicode( 5 ) upcase( 5 ) upto( 1 ) wrap( 2 )

Design Patterns

Design Patterns

Command( 4 ) Composite( 5 ) Decorator( 1 ) Factory( 2 ) Iterator( 1 ) Observer( 4 )

Singletons( 6 ) Strategy( 3 )

GUI Tk

GUI

gtk( 2 ) opengl( 1 ) wxruby( 1 )

Tk

Entry TextField( 2 ) Layout( 5 ) Main Window( 3 ) TkButton( 2 ) TkLabel( 3 ) TkListbox( 1 )

TkRadioButton( 1 )

Language Basics Statement Development

Language Basics

Bitwise Operations( 5 ) Boolean Operators( 9 ) Boolean variable( 2 ) Code statement( 2 ) Comments( 5 ) Comparison Operators( 5 )

Constants( 7 ) Global Constants( 1 ) Global Variables( 2 ) Interpolating( 15 ) irb( 4 ) load( 2 )

Math Operators( 10 ) Mixins( 5 ) Modules Creation( 16 ) nil( 5 ) Operator Precedence( 2 ) Operators( 2 )

Parallel Assignment( 2 ) Predefined Variables( 1 ) putc( 1 ) puts( 23 ) rake( 2 ) RDoc( 5 )

require( 4 ) Reserved words( 5 ) ri( 5 ) Ruby Commandline( 3 ) Ruby Interpreter( 5 ) RubyGems( 12 )

shebang line( 2 ) STDOUT( 2 ) Symbols( 7 ) Ternary Operator( 4 ) Variable scope( 5 ) Variables( 23 )

Statement

BEGIN END( 3 ) break( 5 ) case( 9 ) catch( 2 ) downto( 5 ) ensure( 1 )

for( 4 ) if as modifier( 5 ) If( 18 ) in( 3 ) include( 1 ) loop( 1 )

next( 1 ) raise( 5 ) redo( 1 ) rescue( 6 ) retry( 2 ) step( 1 )

throw( 2 ) times( 8 ) unless as Modifiers( 2 ) unless( 4 ) Until as modifier( 1 ) until( 6 )

upto( 10 ) while as Modifier( 2 ) while( 8 )

Development

ARGF( 3 ) ARGV( 4 ) Aspect Oriented Programming( 1 ) Benchmark( 5 ) chomp( 2 ) Command line( 1 )

csv( 10 ) Data Type( 2 ) Embedded Ruby( 5 ) Embeded C( 1 ) ENV( 2 ) eval( 5 )

Exception( 4 ) exec( 1 ) GC( 2 ) gem( 7 ) Generator( 2 ) gets( 8 )

KCODE( 8 ) Kernel( 1 ) Keyboard reading( 1 ) logger( 4 ) Marshal( 2 ) Match Operator( 2 )

Math extensions( 9 ) Math.constants( 3 ) Math( 10 ) print( 3 ) printf( 5 ) Process( 4 )

profile( 2 ) PStore( 2 ) rand( 7 ) Regexps Group( 5 ) Regexps Repetition( 18 ) Regexps( 29 )

RUBY_PLATFORM( 1 ) scanf( 1 ) Shell( 1 ) sprintf( 5 ) SyncEnumerator( 1 ) system( 5 )

Timeout( 2 ) Unicode( 1 ) Utility Regexps( 3 ) Your Exception( 3 ) zip( 3 )

Windows Platform

Windows Platform

Dialog( 1 ) Excel( 5 ) Internet Explorer( 7 ) Powerpoint( 1 ) Sound( 1 ) Win32API( 5 )

winsock( 1 ) Word( 4 )

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