U

Index

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tab characters, expanding/compressing in strings
tab completion
tagged integers
tasks (rate utility)
TCP (Transmission Control Protocol), network programming
Telnet client example (Ruby/Tk GUI)
Tempfile library
temporary files
temporary installations (Ruby)
ternary decision operators
ternary operators, spacing
test suites, Test::Unit
Test::Unit
     assertion methods
     flunk method
     test suites
testing [See also code coverage, measuring; debugging; performance, measuring.]
     object classes
     object equality
     program interactivity
     Ruby on Rails applications
     Test::Unit
         assertion methods
         flunk method
         test suites
    ZenTest tools
         autotest tool
         command-line switches
         CUT
         multiruby tool
         unit_diff program
text
     domains
     filters
    regex
         detecting doubled words
         doubled words, detecting
         matching all-cap words
     wrapping, strings
text fields
     FXRuby
     QtRuby
     Ruby/GTK2 2nd
     Ruby/Tk
TextMate 2nd
then keyword
thermostat example (Ruby/Tk GUI)
threaded servers
ThreadGroup.new class method, creating thread groups
threads
     awakening
     condition variables
     creating
     deadlock
     events, waiting for
     exception handling
     green
    groups
         adding threads to
         creating
         killing threads in
         listing threads in
         waking up threads in
     I/O operations, processing during
     identity, finding
     listing
     live threads, checking
    main
         references
         value method, join operations
         waiting on other threads
     Monitor mixins 2nd
     mutexes
     object references as shorthand
     operational timeouts
     parallel iterators
     passing parameters into
     pipes, passing through
     priorities, determining/changing
     priority accessors
     raising exceptions
     safety levels, determining
     state, checking
     status, checking
     stopping
         awakening
         checking
     synchronizing
         critical sections
         predefined synchronized queue classes
         resource access
    variables
         $SAFE
         accessing
         accessing from scope
     yielding control to schedulers
threequal operators [See equal sign (=), === (relationship) operators.]
Time class
     Comparable module
     dates/time, interconverting between
     leap years, finding
    methods
         mktime
         strftime instance
         Time.at
         Time.gm
         Time.utc
         to_a instance
         wday instance
    strftime method
         converting time zones
         formatting date/time values
         printing hours/minutes/seconds
     zone accessor, finding time zones
time of day simple server example (network programming)
time stamps
time zones
     converting
     finding
Time.at method, converting epocks
Time.gm method
Time.local method, validating time
Time.utc method
time/dates
     comparing values
    converting
         epochs
         seconds to days/hours/minutes
     current time, determining
     day of the week, determining
     day of the year, finding
     Daylight Saving Time
     days in a month, determining
     differences in values, computing
     Easter, determining date of
     epochs 2nd
     formatting values
     GMT 2nd
     interconverting between
     intervals, adding
     Julian dates, finding
     leap seconds
     leap years, finding
     mktime method
     months, dividing into weeks
     Nth weekday in a month, finding
    printing
         hours/minutes/seconds
         values
     strftime method
     strings, retrieving values from
    time zones
         converting
         finding
     Time.gm method
     Time.utc method
     to_a instance method
     UTC 2nd
     validating
     wday instance method
     week of the year, finding
timeouts, threads
TimerClock widgets (QtRuby)
Tk [See Ruby/Tk.]
to_a instance method, dates/times
to_ary method
to_f method, converting strings to numbers
to_f methods, Fahrenheit and Celsius temperature conversion sample program
to_hash method
to_i method, converting strings to numbers
to_int method, implicit numeric conversion
to_s method
     base number conversions
     formatting date/time values
     string conversions
to_set method, converting enumerables to mathematical sets
to_str method 2nd
tokenizing strings
toplevel, uses of
tracer library
transact method
transactions
     interrupting
     roots, deleting
transport layer (network programming)
trap method, process manipulation
trees
     arrays, converting to
    binary trees
         lookup tables
         sorting
     parsing, XML
     strings, converting to
    binary trees
         implementing
trig functions
trigonometry
     degree of arc
     grads
     radians
true types
TrueClasses
truncate method
tty? Method, testing for stream/terminal associations
tuplespaces
type method