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How to get the last N rows of a pandas DataFrame?
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3 Answers
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Cannot serve WCF services in IIS on Windows 8
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Callum Watkins
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answered Jul 12 '12 at 20:35
faesterfaester
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Selecting the first “n” items with jQuery
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379
You probably want to read up on slice. Your code will look something like this:
$("a").slice...
Pandas get topmost n records within each group
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Select multiple columns in data.table by their numeric indices
... all just work:
library(data.table)
dt <- data.table(a = 1, b = 2, c = 3)
# select single column by index
dt[, 2]
# b
# 1: 2
# select multiple columns by index
dt[, 2:3]
# b c
# 1: 2 3
# select single column by name
dt[, "a"]
# a
# 1: 1
# select multiple columns by name
dt[, c("a", ...
How to use relative/absolute paths in css URLs?
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Appending an element to the end of a list in Scala
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List(1,2,3) :+ 4
Results in List[Int] = List(1, 2, 3, 4)
Note that this operation has a complexity of O(n). If you need this operation frequently, or for long lists, consider using another data type (e.g. a ListBuffer).
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jQuery map vs. each
...you can potentially waste a lot of memory.
For example:
var items = [1,2,3,4];
$.each(items, function() {
alert('this is ' + this);
});
var newItems = $.map(items, function(i) {
return i + 1;
});
// newItems is [2,3,4,5]
You can also use the map function to remove an item from an array. F...
How can I convert this foreach code to Parallel.ForEach?
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edited Jul 26 '13 at 9:06
Contango
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