大约有 40,000 项符合查询结果（耗时：0.0503秒） [XML]
How to map and remove nil values in Ruby
... 2, 5, 8, 10, 13]
enum.filter_map { |i| i * 2 if i.even? }
# => [4, 16, 20]
In your case, as the block evaluates to falsey, simply:
items.filter_map { |x| process_x url }
"Ruby 2.7 adds Enumerable#filter_map" is a good read on the subject, with some performance benchmarks against some of the...
Is it possible to use Swift's Enum in Obj-C?
...
|
edited Nov 20 '19 at 9:09
answered Feb 10 '15 at 16:02
...
what is the use of xsi:schemaLocation?
...
rogerdpack
46.2k3030 gold badges200200 silver badges315315 bronze badges
answered May 3 '11 at 20:37
skaffmanskaffman
...
Remove 'a' from legend when using aesthetics and geom_text
...Sepal.Width , colour = Species , shape = Species, label = Species ) , size=20 ) +
geom_point()+
geom_text( show_guide = F )
share
|
improve this answer
|
follow
...
Once upon a time, when > was faster than < … Wait, what?
...
answered Sep 7 '11 at 20:34
Nicol BolasNicol Bolas
354k4747 gold badges595595 silver badges784784 bronze badges
...
Closing Hg Branches
...
|
edited Jun 20 '17 at 16:45
Vadim Kotov
6,58788 gold badges4343 silver badges5555 bronze badges
...
How to revert a folder to a particular commit by creating a patch
...d.
– Mariusz Pawelski
Jun 22 '19 at 20:20
add a comment
|
...
Difference between @Mock and @InjectMocks
...ers?
– Pierre Thibault
Jul 8 '19 at 20:30
@PierreThibault Injecting mocks only works for direct members, but you can s...
Get class name of django model
...hanks
– little_birdie
Jan 25 '17 at 20:40
add a comment
|
...
Determine if ActiveRecord Object is New
...
answered Oct 20 '11 at 22:20
John BeynonJohn Beynon
35.6k77 gold badges7878 silver badges9191 bronze badges
...