diff options
Diffstat (limited to 'railties/guides/source/active_support_core_extensions.textile')
| -rw-r--r-- | railties/guides/source/active_support_core_extensions.textile | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/railties/guides/source/active_support_core_extensions.textile b/railties/guides/source/active_support_core_extensions.textile index 81b6894f74..4b8e2ef691 100644 --- a/railties/guides/source/active_support_core_extensions.textile +++ b/railties/guides/source/active_support_core_extensions.textile @@ -864,6 +864,14 @@ If an optional block is given +many?+ only takes into account those elements tha @see_more = videos.many? {|video| video.category == params[:category]} </ruby> +h4. +exclude?+ + +The predicate +exclude?+ tests whether a given object does *not* belong to the collection. It is the negation of the builtin +include?+: + +<ruby> +to_visit << node if visited.exclude?(node) +</ruby> + h3. Extensions to +Array+ h4. Accessing |