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A variable modified inside a while loop is not remembered
...after the if statement. However, when I set the same variable to the value 2 inside an if which is inside a while statement, it's forgotten after the while loop. It's behaving like I'm using some sort of copy of the variable $foo inside the while loop and I am modifying only that particula...
How to find all occurrences of a substring?
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20 Answers
20
Active
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Similar to jQuery .closest() but traversing descendants?
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answered Jan 22 '12 at 15:06
Rob WRob W
304k6868 gold badges730730 silver badges629629 bronze badges
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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"
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Git alias with positional parameters
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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?
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492
Yes, the order of elements in a python list is persistent.
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.gitignore exclude folder but include specific subfolder
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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...
CSS fixed width in a span
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432
ul {
list-style-type: none;
padding-left: 0px;
}
ul li span {
float: left;
w...