### Home Classes Methods

### In Files

- lib/active_support/core_ext/numeric/bytes.rb
- lib/active_support/core_ext/numeric/time.rb
- lib/active_support/core_ext/object/blank.rb
- lib/active_support/core_ext/object/duplicable.rb
- lib/active_support/core_ext/string/output_safety.rb
- lib/active_support/json/encoding.rb

### Parent

Object

### Methods

- #ago
- #as_json
- #byte
- #bytes
- #day
- #days
- #duplicable?
- #encode_json
- #exabyte
- #exabytes
- #fortnight
- #fortnights
- #from_now
- #gigabyte
- #gigabytes
- #hour
- #hours
- #html_safe?
- #kilobyte
- #kilobytes
- #megabyte
- #megabytes
- #minute
- #minutes
- #petabyte
- #petabytes
- #second
- #seconds
- #since
- #terabyte
- #terabytes
- #until
- #week
- #weeks

### Class/Module Index

Quicksearch

- ActiveSupport
- ActiveSupport::Autoload
- ActiveSupport::BacktraceCleaner
- ActiveSupport::Base64
- ActiveSupport::BasicObject
- ActiveSupport::Benchmarkable
- ActiveSupport::BufferedLogger
- ActiveSupport::BufferedLogger::Severity
- ActiveSupport::Cache
- ActiveSupport::Cache::Entry
- ActiveSupport::Cache::FileStore
- ActiveSupport::Cache::MemCacheStore
- ActiveSupport::Cache::MemoryStore
- ActiveSupport::Cache::NullStore
- ActiveSupport::Cache::Store
- ActiveSupport::Cache::Strategy
- ActiveSupport::Cache::Strategy::LocalCache
- ActiveSupport::Cache::Strategy::LocalCache::LocalStore
- ActiveSupport::Callbacks
- ActiveSupport::Callbacks::ClassMethods
- ActiveSupport::Concern
- ActiveSupport::Configurable
- ActiveSupport::Configurable::ClassMethods
- ActiveSupport::Configurable::Configuration
- ActiveSupport::Dependencies
- ActiveSupport::Dependencies::ClassCache
- ActiveSupport::Dependencies::WatchStack
- ActiveSupport::Deprecation
- ActiveSupport::DescendantsTracker
- ActiveSupport::Duration
- ActiveSupport::FileUpdateChecker
- ActiveSupport::FileWatcher
- ActiveSupport::FileWatcher::Backend
- ActiveSupport::Gzip
- ActiveSupport::Gzip::Stream
- ActiveSupport::HashWithIndifferentAccess
- ActiveSupport::HashWithIndifferentAccess
- ActiveSupport::Inflector
- ActiveSupport::Inflector::Inflections
- ActiveSupport::InheritableOptions
- ActiveSupport::JSON
- ActiveSupport::JSON::Encoding
- ActiveSupport::JSON::Encoding::CircularReferenceError
- ActiveSupport::JSON::Encoding::Encoder
- ActiveSupport::JSON::Variable
- ActiveSupport::LogSubscriber
- ActiveSupport::LogSubscriber::TestHelper
- ActiveSupport::LogSubscriber::TestHelper::MockLogger
- ActiveSupport::Memoizable
- ActiveSupport::Memoizable::InstanceMethods
- ActiveSupport::MessageEncryptor
- ActiveSupport::MessageEncryptor::InvalidMessage
- ActiveSupport::MessageVerifier
- ActiveSupport::MessageVerifier::InvalidSignature
- ActiveSupport::Multibyte
- ActiveSupport::Multibyte::Chars
- ActiveSupport::Multibyte::EncodingError
- ActiveSupport::Multibyte::Unicode
- ActiveSupport::Multibyte::Unicode::Codepoint
- ActiveSupport::Multibyte::Unicode::UnicodeDatabase
- ActiveSupport::Notifications
- ActiveSupport::Notifications::Event
- ActiveSupport::Notifications::Fanout
- ActiveSupport::Notifications::Instrumenter
- ActiveSupport::OrderedHash
- ActiveSupport::OrderedOptions
- ActiveSupport::Railtie
- ActiveSupport::Rescuable
- ActiveSupport::Rescuable::ClassMethods
- ActiveSupport::SafeBuffer
- ActiveSupport::SafeBuffer::SafeConcatError
- ActiveSupport::StringInquirer
- ActiveSupport::TaggedLogging
- ActiveSupport::TestCase
- ActiveSupport::Testing
- ActiveSupport::Testing::Assertions
- ActiveSupport::Testing::Declarative
- ActiveSupport::Testing::Isolation
- ActiveSupport::Testing::Isolation::Forking
- ActiveSupport::Testing::Isolation::MiniTest
- ActiveSupport::Testing::Isolation::Subprocess
- ActiveSupport::Testing::Isolation::TestUnit
- ActiveSupport::Testing::Pending
- ActiveSupport::Testing::Performance
- ActiveSupport::Testing::Performance::Benchmarker
- ActiveSupport::Testing::Performance::ForClassicTestUnit
- ActiveSupport::Testing::Performance::ForMiniTest
- ActiveSupport::Testing::Performance::Metrics
- ActiveSupport::Testing::Performance::Metrics::Amount
- ActiveSupport::Testing::Performance::Metrics::Base
- ActiveSupport::Testing::Performance::Metrics::CpuTime
- ActiveSupport::Testing::Performance::Metrics::DigitalInformationUnit
- ActiveSupport::Testing::Performance::Metrics::GcRuns
- ActiveSupport::Testing::Performance::Metrics::GcTime
- ActiveSupport::Testing::Performance::Metrics::Memory
- ActiveSupport::Testing::Performance::Metrics::Objects
- ActiveSupport::Testing::Performance::Metrics::ProcessTime
- ActiveSupport::Testing::Performance::Metrics::Time
- ActiveSupport::Testing::Performance::Metrics::UserTime
- ActiveSupport::Testing::Performance::Metrics::WallTime
- ActiveSupport::Testing::Performance::Performer
- ActiveSupport::Testing::Performance::Profiler
- ActiveSupport::Testing::ProxyTestResult
- ActiveSupport::Testing::RemoteError
- ActiveSupport::Testing::SetupAndTeardown
- ActiveSupport::Testing::SetupAndTeardown::ClassMethods
- ActiveSupport::Testing::SetupAndTeardown::ForClassicTestUnit
- ActiveSupport::Testing::SetupAndTeardown::ForMiniTest
- ActiveSupport::TimeWithZone
- ActiveSupport::TimeZone
- ActiveSupport::XmlMini
- ActiveSupport::XmlMini_LibXMLSAX
- ActiveSupport::XmlMini_LibXMLSAX::HashBuilder
- ActiveSupport::XmlMini_NokogiriSAX
- ActiveSupport::XmlMini_NokogiriSAX::HashBuilder
- Test
- Test::Unit
- Test::Unit::Collector
- Test::Unit::Collector::ObjectSpace
- Object
- Object::HashWithIndifferentAccess
- Object::MissingSourceFile
- ERB
- ERB::Util
- I18n
- I18n::Railtie
- LoadError
- LoadError
- Logger
- Logger::SimpleFormatter
- Array
- Base64
- Benchmark
- BigDecimal
- Class
- Date
- DateTime
- Enumerable
- FalseClass
- File
- Float
- Hash
- Integer
- Kernel
- Module
- NameError
- NilClass
- Numeric
- Process
- QualifiedConstUtils
- Range
- Regexp
- String
- Symbol
- Time
- TrueClass
- URI

No matching classes.

# Numeric

### Constants

EXABYTE
GIGABYTE
KILOBYTE
MEGABYTE
PETABYTE
TERABYTE

### Public Instance Methods

ago(time = ::Time.current) click to toggle source

Reads best without arguments: 10.minutes.ago

    # File lib/active_support/core_ext/numeric/time.rb, line 65
    def ago(time = ::Time.current)
      time - self
    end

Also aliased as: until
as_json(options = nil) click to toggle source

    # File lib/active_support/json/encoding.rb, line 185
    def as_json(options = nil) self end

byte() click to toggle source
Alias for: bytes
bytes() click to toggle source

Enables the use of byte calculations and declarations, like 45.bytes + 2.6.megabytes

    # File lib/active_support/core_ext/numeric/bytes.rb, line 10
    def bytes
      self
    end

Also aliased as: byte
day() click to toggle source
Alias for: days
days() click to toggle source

    # File lib/active_support/core_ext/numeric/time.rb, line 49
    def days
      ActiveSupport::Duration.new(self * 24.hours, [[:days, self]])
    end

Also aliased as: day
duplicable?() click to toggle source

Numbers are not duplicable:

    3.duplicable? # => false
    3.dup         # => TypeError: can't dup Fixnum

    # File lib/active_support/core_ext/object/duplicable.rb, line 79
    def duplicable?
      false
    end

encode_json(encoder) click to toggle source

    # File lib/active_support/json/encoding.rb, line 186
    def encode_json(encoder) to_s end

exabyte() click to toggle source
Alias for: exabytes
exabytes() click to toggle source

    # File lib/active_support/core_ext/numeric/bytes.rb, line 40
    def exabytes
      self * EXABYTE
    end

Also aliased as: exabyte
fortnight() click to toggle source
Alias for: fortnights
fortnights() click to toggle source

    # File lib/active_support/core_ext/numeric/time.rb, line 59
    def fortnights
      ActiveSupport::Duration.new(self * 2.weeks, [[:days, self * 14]])
    end

Also aliased as: fortnight
from_now(time = ::Time.current) click to toggle source

Reads best without arguments: 10.minutes.from_now

Alias for: since
gigabyte() click to toggle source
Alias for: gigabytes
gigabytes() click to toggle source

    # File lib/active_support/core_ext/numeric/bytes.rb, line 25
    def gigabytes
      self * GIGABYTE
    end

Also aliased as: gigabyte
hour() click to toggle source
Alias for: hours
hours() click to toggle source

    # File lib/active_support/core_ext/numeric/time.rb, line 44
    def hours
      ActiveSupport::Duration.new(self * 3600, [[:seconds, self * 3600]])
    end

Also aliased as: hour
html_safe?() click to toggle source

    # File lib/active_support/core_ext/string/output_safety.rb, line 82
    def html_safe?
      true
    end

kilobyte() click to toggle source
Alias for: kilobytes
kilobytes() click to toggle source

    # File lib/active_support/core_ext/numeric/bytes.rb, line 15
    def kilobytes
      self * KILOBYTE
    end

Also aliased as: kilobyte
megabyte() click to toggle source
Alias for: megabytes
megabytes() click to toggle source

    # File lib/active_support/core_ext/numeric/bytes.rb, line 20
    def megabytes
      self * MEGABYTE
    end

Also aliased as: megabyte
minute() click to toggle source
Alias for: minutes
minutes() click to toggle source

    # File lib/active_support/core_ext/numeric/time.rb, line 39
    def minutes
      ActiveSupport::Duration.new(self * 60, [[:seconds, self * 60]])
    end

Also aliased as: minute
petabyte() click to toggle source
Alias for: petabytes
petabytes() click to toggle source

    # File lib/active_support/core_ext/numeric/bytes.rb, line 35
    def petabytes
      self * PETABYTE
    end

Also aliased as: petabyte
second() click to toggle source
Alias for: seconds
seconds() click to toggle source

Enables the use of time calculations and declarations, like 45.minutes + 2.hours + 4.years.

These methods use Time#advance for precise date calculations when using from_now, ago, etc. as well as adding or subtracting their results from a Time object. For example:

    # equivalent to Time.now.advance(:months => 1)
    1.month.from_now

    # equivalent to Time.now.advance(:years => 2)
    2.years.from_now

    # equivalent to Time.now.advance(:months => 4, :years => 5)
    (4.months + 5.years).from_now

While these methods provide precise calculation when used as in the examples above, care should be taken to note that this is not true if the result of `months’, `years’, etc is converted before use:

    # equivalent to 30.days.to_i.from_now
    1.month.to_i.from_now

    # equivalent to 365.25.days.to_f.from_now
    1.year.to_f.from_now

In such cases, Ruby’s core Date and Time should be used for precision date and time arithmetic

    # File lib/active_support/core_ext/numeric/time.rb, line 34
    def seconds
      ActiveSupport::Duration.new(self, [[:seconds, self]])
    end

Also aliased as: second
since(time = ::Time.current) click to toggle source

Reads best with argument: 10.minutes.since(time)

    # File lib/active_support/core_ext/numeric/time.rb, line 73
    def since(time = ::Time.current)
      time + self
    end

Also aliased as: from_now
terabyte() click to toggle source
Alias for: terabytes
terabytes() click to toggle source

    # File lib/active_support/core_ext/numeric/bytes.rb, line 30
    def terabytes
      self * TERABYTE
    end

Also aliased as: terabyte
until(time = ::Time.current) click to toggle source

Reads best with argument: 10.minutes.until(time)

Alias for: ago
week() click to toggle source
Alias for: weeks
weeks() click to toggle source

    # File lib/active_support/core_ext/numeric/time.rb, line 54
    def weeks
      ActiveSupport::Duration.new(self * 7.days, [[:days, self * 7]])
    end

Also aliased as: week

[Validate]

Generated with the Darkfish Rdoc Generator 2.