diff options
Diffstat (limited to 'railties/guides/source/active_support_core_extensions.textile')
| -rw-r--r-- | railties/guides/source/active_support_core_extensions.textile | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/railties/guides/source/active_support_core_extensions.textile b/railties/guides/source/active_support_core_extensions.textile index 7959a88c5b..76d757f6a7 100644 --- a/railties/guides/source/active_support_core_extensions.textile +++ b/railties/guides/source/active_support_core_extensions.textile @@ -1301,7 +1301,7 @@ NOTE: Defined in +active_support/core_ext/string/output_safety.rb+. h5. Transformation -As a rule of thumb, except perhaps for concatenation as explained above, any method that may change a string gives you an unsafe string. These are +donwcase+, +gsub+, +strip+, +chomp+, +underscore+, etc. +As a rule of thumb, except perhaps for concatenation as explained above, any method that may change a string gives you an unsafe string. These are +downcase+, +gsub+, +strip+, +chomp+, +underscore+, etc. In the case of in-place transformations like +gsub!+ the receiver itself becomes unsafe. @@ -2053,6 +2053,16 @@ end NOTE: Defined in +active_support/core_ext/enumerable.rb+. +h4. +pluck+ + +Plucks the value of the passed method for each element and returns the result as an array + +<ruby> +people.pluck(:name) # => [ "David Heinemeier Hansson", "Jamie Heinemeier Hansson" ] +</ruby> + +NOTE: Defined in +active_support/core_ext/enumerable.rb+. + h4. +each_with_object+ The +inject+ method offers iteration with an accumulator: |