class Numeric
Constants
- EXABYTE
- GIGABYTE
- KILOBYTE
- MEGABYTE
- PETABYTE
- TERABYTE
Public Instance Methods
# File activesupport/lib/active_support/core_ext/numeric/bytes.rb, line 12 def bytes self end
Enables the use of byte calculations and declarations, like 45.bytes + 2.6.megabytes
2.bytes # => 2
# File activesupport/lib/active_support/core_ext/numeric/time.rb, line 45 def days ActiveSupport::Duration.days(self) end
Returns a Duration instance matching the number of days provided.
2.days # => 2 days
# File activesupport/lib/active_support/core_ext/object/duplicable.rb, line 99 def duplicable? false end
Numbers are not duplicable:
3.duplicable? # => false 3.dup # => TypeError: can't dup Integer
# File activesupport/lib/active_support/core_ext/numeric/bytes.rb, line 60 def exabytes self * EXABYTE end
Returns the number of bytes equivalent to the exabytes provided.
2.exabytes # => 2_305_843_009_213_693_952
# File activesupport/lib/active_support/core_ext/numeric/time.rb, line 61 def fortnights ActiveSupport::Duration.weeks(self * 2) end
Returns a Duration instance matching the number of fortnights provided.
2.fortnights # => 4 weeks
# File activesupport/lib/active_support/core_ext/numeric/bytes.rb, line 36 def gigabytes self * GIGABYTE end
Returns the number of bytes equivalent to the gigabytes provided.
2.gigabytes # => 2_147_483_648
# File activesupport/lib/active_support/core_ext/numeric/time.rb, line 37 def hours ActiveSupport::Duration.hours(self) end
Returns a Duration instance matching the number of hours provided.
2.hours # => 2 hours
# File activesupport/lib/active_support/core_ext/string/output_safety.rb, line 129 def html_safe? true end
# File activesupport/lib/active_support/core_ext/numeric/time.rb, line 71 def in_milliseconds self * 1000 end
Returns the number of milliseconds equivalent to the seconds provided. Used with the standard time durations, like 1.hour.in_milliseconds – so we can feed them to JavaScript functions like getTime().
2.in_milliseconds # => 2_000
# File activesupport/lib/active_support/core_ext/numeric/bytes.rb, line 20 def kilobytes self * KILOBYTE end
Returns the number of bytes equivalent to the kilobytes provided.
2.kilobytes # => 2048
# File activesupport/lib/active_support/core_ext/numeric/bytes.rb, line 28 def megabytes self * MEGABYTE end
Returns the number of bytes equivalent to the megabytes provided.
2.megabytes # => 2_097_152
# File activesupport/lib/active_support/core_ext/numeric/time.rb, line 29 def minutes ActiveSupport::Duration.minutes(self) end
Returns a Duration instance matching the number of minutes provided.
2.minutes # => 2 minutes
# File activesupport/lib/active_support/core_ext/numeric/inquiry.rb, line 17 def negative? self < 0 end
Returns true if the number is negative.
-1.negative? # => true 0.negative? # => false 1.negative? # => false
# File activesupport/lib/active_support/core_ext/numeric/bytes.rb, line 52 def petabytes self * PETABYTE end
Returns the number of bytes equivalent to the petabytes provided.
2.petabytes # => 2_251_799_813_685_248
# File activesupport/lib/active_support/core_ext/numeric/inquiry.rb, line 8 def positive? self > 0 end
Returns true if the number is positive.
1.positive? # => true 0.positive? # => false -1.positive? # => false
# File activesupport/lib/active_support/core_ext/numeric/time.rb, line 21 def seconds ActiveSupport::Duration.seconds(self) end
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.current.advance(months: 1) 1.month.from_now # equivalent to Time.current.advance(years: 2) 2.years.from_now # equivalent to Time.current.advance(months: 4, years: 5) (4.months + 5.years).from_now
# File activesupport/lib/active_support/core_ext/numeric/bytes.rb, line 44 def terabytes self * TERABYTE end
Returns the number of bytes equivalent to the terabytes provided.
2.terabytes # => 2_199_023_255_552
# File activesupport/lib/active_support/core_ext/numeric/time.rb, line 53 def weeks ActiveSupport::Duration.weeks(self) end
Returns a Duration instance matching the number of weeks provided.
2.weeks # => 2 weeks
© 2004–2018 David Heinemeier Hansson
Licensed under the MIT License.