大约有 44,300 项符合查询结果（耗时：0.0442秒） [XML]
Empty set literal?
...
phoenix
3,20611 gold badge2727 silver badges3131 bronze badges
answered May 25 '11 at 20:20
sepp2ksepp2k
...
How to find all occurrences of a substring?
...
20 Answers
20
Active
...
Similar to jQuery .closest() but traversing descendants?
...
answered Jan 22 '12 at 15:06
Rob WRob W
304k6868 gold badges730730 silver badges629629 bronze badges
...
Changing column names of a data frame
...X <- data.frame(bad=1:3, worse=rnorm(3))
R> X
bad worse
1 1 -2.440467
2 2 1.320113
3 3 -0.306639
R> colnames(X) <- c("good", "better")
R> X
good better
1 1 -2.440467
2 2 1.320113
3 3 -0.306639
You can also subset:
R> colnames(X)[2] <- "superduper"
...
What is the maven-shade-plugin used for, and why would you want to relocate Java packages?
...e to fall into a problem: A Qux project is depending on Foo, and also Bar:2.0 (and it cannot use Bar:1.0 because Qux needs to use new feature in Bar:2.0). Here is the dilemma: should Qux use Bar:1.0 (which Qux's code will not work) or Bar:2.0 (which Foo's code will not work)?
In order to solve th...
Git alias with positional parameters
... |
edited Mar 4 '18 at 13:20
Eugen Konkov
13.6k55 gold badges5959 silver badges9393 bronze badges
answer...
Is a Python list guaranteed to have its elements stay in the order they are inserted in?
...
492
Yes, the order of elements in a python list is persistent.
...
.gitignore exclude folder but include specific subfolder
...
|
edited Aug 24 '18 at 21:24
fawaad
34155 silver badges1212 bronze badges
answered Apr 4 '1...
How to debug stream().map(…) with lambda expressions?
...he elements of the stream:
List<Integer> naturals = Arrays.asList(1,2,3,4,5,6,7,8,9,10,11,12,13);
naturals.stream()
.map(n -> n * 2)
.peek(System.out::println)
.collect(Collectors.toList());
UPDATE:
I think you're getting confused because map is an intermediate operation - i...