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How to shift a column in Pandas DataFrame
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In [18]: a
Out[18]:
x1 x2
0 0 5
1 1 6
2 2 7
3 3 8
4 4 9
In [19]: a.x2 = a.x2.shift(1)
In [20]: a
Out[20]:
x1 x2
0 0 NaN
1 1 5
2 2 6
3 3 7
4 4 8
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sbt-assembly: deduplication found error
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3 Answers
3
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Calculate the median of a billion numbers
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53
Ah, my brain has just kicked into gear, I have a sensible suggestion now. Probably too late if t...
How to open a URL in a new Tab using JavaScript or jQuery? [duplicate]
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453
Use window.open():
var win = window.open('http://stackoverflow.com/', '_blank');
if (win) {
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What do the different readystates in XMLHttpRequest mean, and how can I use them?
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1 The request has been set up
2 The request has been sent
3 The request is in process
4 The request is complete
(from https://www.w3schools.com/js/js_ajax_http_response.asp)
In practice you almost never use any of them except for 4.
Some XMLHttpRequest implementations ...
Conditional HTML Attributes using Razor MVC3
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3 Answers
3
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How to check if a database exists in SQL Server?
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edited Jun 8 '12 at 13:50
SteveC
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answer...
Install a module using pip for specific python version
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NoobEditor
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answered Jun 6 '12 at 18:13
Charles DuffyCha...
Replace specific characters within strings
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With a regular expression and the function gsub():
group <- c("12357e", "12575e", "197e18", "e18947")
group
[1] "12357e" "12575e" "197e18" "e18947"
gsub("e", "", group)
[1] "12357" "12575" "19718" "18947"
What gsub does here is to replace each occurrence of "e" with an empty string "".
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What should main() return in C and C++?
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edited Nov 23 '19 at 9:21
Community♦
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answered Oct 15 '08 at 12:16
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