Skip to content
体验新版
项目
组织
正在加载...
登录
切换导航
打开侧边栏
张重言
rails
提交
4d20de8a
R
rails
项目概览
张重言
/
rails
通知
1
Star
0
Fork
0
代码
文件
提交
分支
Tags
贡献者
分支图
Diff
Issue
0
列表
看板
标记
里程碑
合并请求
0
Wiki
0
Wiki
分析
仓库
DevOps
项目成员
Pages
R
rails
项目概览
项目概览
详情
发布
仓库
仓库
文件
提交
分支
标签
贡献者
分支图
比较
Issue
0
Issue
0
列表
看板
标记
里程碑
合并请求
0
合并请求
0
Pages
分析
分析
仓库分析
DevOps
Wiki
0
Wiki
成员
成员
收起侧边栏
关闭侧边栏
动态
分支图
创建新Issue
提交
Issue看板
体验新版 GitCode,发现更多精彩内容 >>
提交
4d20de8a
编写于
12月 02, 2011
作者:
D
David Heinemeier Hansson
浏览文件
操作
浏览文件
下载
电子邮件补丁
差异文件
Added Enumerable#pluck to wrap the common pattern of collect(&:method) *DHH*
上级
76a3ec7f
变更
3
隐藏空白更改
内联
并排
Showing
3 changed file
with
19 addition
and
3 deletion
+19
-3
activesupport/CHANGELOG.md
activesupport/CHANGELOG.md
+4
-2
activesupport/lib/active_support/core_ext/enumerable.rb
activesupport/lib/active_support/core_ext/enumerable.rb
+7
-0
activesupport/test/core_ext/enumerable_test.rb
activesupport/test/core_ext/enumerable_test.rb
+8
-1
未找到文件。
activesupport/CHANGELOG.md
浏览文件 @
4d20de8a
## Rails 3.2.0 (unreleased) ##
*
Module#synchronize is deprecated with no replacement. Please use
`monitor`
from ruby's standard library.
*
Added Enumerable#pluck to wrap the common pattern of collect(&:method)
*DHH*
*
Module#synchronize is deprecated with no replacement. Please use
`monitor`
from ruby's standard library.
*
(Date|DateTime|Time)#beginning_of_week accept an optional argument to
be able to set the day at which weeks are assumed to start.
...
...
activesupport/lib/active_support/core_ext/enumerable.rb
浏览文件 @
4d20de8a
...
...
@@ -63,6 +63,13 @@ def sum(identity = 0, &block)
end
end
# Plucks the value of the passed method for each element and returns the result as an array. Example:
#
# people.pluck(:name) # => [ "David Heinemeier Hansson", "Jamie Heinemeier Hansson" ]
def
pluck
(
method
)
collect
{
|
element
|
element
.
send
(
method
)
}
end
# Iterates over a collection, passing the current element *and* the
# +memo+ to the block. Handy for building up hashes or
# reducing collections down to one object. Examples:
...
...
activesupport/test/core_ext/enumerable_test.rb
浏览文件 @
4d20de8a
...
...
@@ -126,4 +126,11 @@ def test_exclude?
assert_equal
true
,
GenericEnumerable
.
new
([
1
]).
exclude?
(
2
)
assert_equal
false
,
GenericEnumerable
.
new
([
1
]).
exclude?
(
1
)
end
end
def
test_pluck_single_method
person
=
Struct
.
new
(
:name
)
people
=
[
person
.
new
(
"David"
),
person
.
new
(
"Jamie"
)
]
assert_equal
[
"David"
,
"Jamie"
],
people
.
pluck
(
:name
)
end
end
\ No newline at end of file
编辑
预览
Markdown
is supported
0%
请重试
或
添加新附件
.
添加附件
取消
You are about to add
0
people
to the discussion. Proceed with caution.
先完成此消息的编辑!
取消
想要评论请
注册
或
登录