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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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Aligning text and image on UIButton with imageEdgeInsets and titleEdgeInsets
...ike to place an icon left of the two lines of text such that there's about 2-3 pixels of space between the image and the start of text. The control itself is Center aligned horizontally (set through Interface Builder)
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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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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...
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...
In C++, is it still bad practice to return a vector from a function?
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edited Nov 12 '14 at 17:16
Mgetz
4,59522 gold badges2828 silver badges4646 bronze badges
a...
Python “extend” for a dictionary
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728
a.update(b)
Latest Python Standard Library Documentation
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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...
Get ID of last inserted document in a mongoDB w/ Java driver
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answered Jul 26 '10 at 21:41
Matt WMatt W
5,79833 gold badges2727 silver badges4040 bronze badges
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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...