module FileUtils
module Rake
module Rake::AltSystem
module Rake::Cloneable
module Rake::DSL
module Rake::DeprecatedObjectDSL
module Rake::FileUtilsExt
module Rake::InvocationExceptionMixin
module Rake::TaskManager
module Rake::Version
module Rake::Win32
module Sys
module Test
module Test::Unit
module Test::Unit::Collector
class CompositePublisher
class Module
class Rake::Application
class Rake::CompositePublisher
class Rake::DefaultLoader
class Rake::EarlyTime
class Rake::FileCreationTask
class Rake::FileList
class Rake::FileTask
class Rake::FtpFile
class Rake::FtpUploader
class Rake::InvocationChain
class Rake::InvocationChain::EmptyInvocationChain
class Rake::MakefileLoader
class Rake::MultiTask
class Rake::NameSpace
class Rake::PackageTask
class Rake::PseudoStatus
class Rake::RDocTask
class Rake::RubyForgePublisher
class Rake::RuleRecursionOverflowError
class Rake::SshDirPublisher
class Rake::SshFilePublisher
class Rake::SshFreshDirPublisher
class Rake::Task
class Rake::TaskArgumentError
class Rake::TaskArguments
class Rake::TaskLib
class Rake::TestTask
class Rake::Win32::Win32HomeError
class SshDirPublisher
class SshFilePublisher
class SshFreshDirPublisher
class String
class Test::Unit::Collector::Dir
class Time
rake
0.9.2
# task_defined?
def task_defined?(task_name) Rake.application.lookup(task_name) != nil end