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| author | Xavier Noria <fxn@hashref.com> | 2009-11-01 19:50:21 +0100 |
|---|---|---|
| committer | Xavier Noria <fxn@hashref.com> | 2009-11-01 19:50:21 +0100 |
| commit | 738fd3d4a64c13523ce607357deae45d2f9a0ab5 (patch) | |
| tree | 0bb42c7e715ec678d0e7ebbfe90d2a4fa064facf /railties/guides/source/active_support_core_extensions.textile | |
| parent | 106b78d2efb39d8ea347e141eced61b70ca52618 (diff) | |
| download | rails-738fd3d4a64c13523ce607357deae45d2f9a0ab5.tar.gz rails-738fd3d4a64c13523ce607357deae45d2f9a0ab5.tar.bz2 rails-738fd3d4a64c13523ce607357deae45d2f9a0ab5.zip | |
AS guide: documents Numeric#bytes and friends
Diffstat (limited to 'railties/guides/source/active_support_core_extensions.textile')
| -rw-r--r-- | railties/guides/source/active_support_core_extensions.textile | 29 |
1 files changed, 28 insertions, 1 deletions
diff --git a/railties/guides/source/active_support_core_extensions.textile b/railties/guides/source/active_support_core_extensions.textile index 147366c1a6..a2cfbff0ce 100644 --- a/railties/guides/source/active_support_core_extensions.textile +++ b/railties/guides/source/active_support_core_extensions.textile @@ -783,7 +783,34 @@ The call +str.last(n)+ is equivalent to +str.from(-n)+ if +n+ > 0, and returns a h3. Extensions to +Numeric+ -... +h4. Bytes + +All numbers respond to these methods: + +<ruby> +bytes +kilobytes +megabytes +gigabytes +terabytes +petabytes +exabytes +</ruby> + +They return the corresponding amount of bytes, using a conversion factor of 1024: + +<ruby> +2.kilobytes # => 2048 +3.megabytes # => 3145728 +3.5.gigabytes # => 3758096384 +-4.exabytes # => -4611686018427387904 +</ruby> + +Singular forms are aliased so you are able to say: + +<ruby> +1.megabyte # => 1024 +</ruby> h3. Extensions to +Integer+ |