diff options
Diffstat (limited to 'railties/guides/source/active_support_core_extensions.textile')
| -rw-r--r-- | railties/guides/source/active_support_core_extensions.textile | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/railties/guides/source/active_support_core_extensions.textile b/railties/guides/source/active_support_core_extensions.textile index 2a548ac5c2..5dae4ee76d 100644 --- a/railties/guides/source/active_support_core_extensions.textile +++ b/railties/guides/source/active_support_core_extensions.textile @@ -937,7 +937,15 @@ NOTE: Defined in +active_support/core_ext/integer/inflections.rb+. h3. Extensions to +Float+ -... +h4. +round+ + +The builtin method +Float#round+ rounds a float to the nearest integer. Active Support adds an optional parameter to let you specify a precision: + +<ruby> +Math::E.round(4) # => 2.7183 +</ruby> + +NOTE: Defined in +active_support/core_ext/float/rounding.rb+. h3. Extensions to +BigDecimal+ |