G

Index

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Fahrenheit and Celsius temperature conversion sample program
fail aliases
false types
false values, representation of
FalseClasses
FastCGI (Common Gateway Interface)
FasterCSV library
fcntl method
feedtools library
Fibonacci generators
FIFO (first-in first-out) data structures [See queues.]
File class
     atime method
     basename method
     binmode method, binary files
     chmod method, file permissions
     class method, file ownership
     compare method
     copy method
     ctime method
     delete method
     dirname method
     flock method, locking files
     install method
     join method, file pathnames
     link method
     move method
     mtime method
    new method
         opening/closing files
         updating files
    open method
         appending files
         opening/closing files
     path method
     putc method, single character outputs
     rename method
     rewind method, random access to files
     safe_unlink method
     seek method, random access to files
     split method
     truncate method
     umask method
     utime method
file formats
    Atom
         feedtools library
         RSS standard library
     examples of
     PDF::Writer
         example document
         quadrant method
     REXML, parsing XML
     RMagick
         drawing API
         resizing images
         retrieving information from images
         special effects/transformations
File::Separator object, file pathnames
File::Stat object
     blksize method
     blocks method
     dev method, accessing lower-level file information
     executable_real? method
     file ownership
     file user ID
     ftype method
     gid method
     grpowned? method
     ino method, finding inode numbers
     modes method
     owned? method
     rdev method, accessing file device information
     readable_real? method
     size? method
     stat method
     uid method
     writable_real? method
     zero? method
fileno method
files
     appending
     binary
     block-oriented devices, testing for
     characters, grabbing from keyboard
     comparing
     copying
     deleting 2nd
     device information, accessing
    directories
         chaining
         changing
         changing root
         deleting recursively
         distinguishing between
         finding
         iterating over
         lists of entries, getting
         setting
     existence, checking
     finding
     hard links
     inode numbers, finding
     installing
     iterating over
     length, determining
     links
     locking
     lower-level information, accessing
     moving
     opening/closing
     ownership
     pathnames
     permissions 2nd
     random access
     reading into memory
     renaming
     single character outputs
     size, checking
     stream/terminal associations, testing for
     strings as
     symbolic links
     temporary
     time stamps
     truncating
     umasks
     unlinking
     updating
     user ID
FileTest module
     blockdev? method
     chardev? method
     exist? method
     size? method
     symlink? method
     zero? method
FileUtils library
     makedirs method, chaining directories
     rm_r method, deleting directories recursively
Filter class, I/O reflection
filters, text
finalizers, objects
Fixnums 2nd 3rd
fixtures (Ruby on Rails)
Float method, converting strings to numbers
floating point numbers
     comparing
     creating
     rounding
flock method, locking files
flunk method, Test::Unit
for constructs, each iterators
foreach method, iterating over directories
fork method
     process manipulation
     threads, creating
formatting
     date/time values
    numbers
         for output
         with commas
     RDoc
     strings
forwardable library, method calls
forwarding method calls
fourth roots
FOX [See FXRuby, button widgets.]
FP (functional programming)
free space (hard disk), determining
FreeRIDE
freezing objects
ftype method, distinguishing between files/directories
functional tests (Ruby on Rails)
functions
     atan2
     caching, memoize
     dhms2sec, adding intervals to dates/time values
     eval, dynamically evaluating code
     sec2dhms, date/time value differences, computing
FXRuby
     button widgets
     dialogs
     image file formats, support for
     list widgets
     menus
     messages
     overview of
     radio buttons
     text fields
     windowed application example