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| author | Xavier Noria <fxn@hashref.com> | 2009-12-16 23:47:49 +0100 |
|---|---|---|
| committer | Xavier Noria <fxn@hashref.com> | 2009-12-16 23:47:49 +0100 |
| commit | 64eee76541e56d1230f2fdcab318ea81bf786e80 (patch) | |
| tree | 53aef67ca252c5afb7449b168163552875a536cf /railties/guides/source/active_support_core_extensions.textile | |
| parent | 25550d902260e398a836ee7be13a33369ae24510 (diff) | |
| download | rails-64eee76541e56d1230f2fdcab318ea81bf786e80.tar.gz rails-64eee76541e56d1230f2fdcab318ea81bf786e80.tar.bz2 rails-64eee76541e56d1230f2fdcab318ea81bf786e80.zip | |
AS guide: documents Enumerable#exclude?
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 |