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How to get instance variables in Python?
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answered Sep 20 '08 at 19:34
cnucnu
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Pandas count(distinct) equivalent
...xample:
In [2]: table
Out[2]:
CLIENTCODE YEARMONTH
0 1 201301
1 1 201301
2 2 201301
3 1 201302
4 2 201302
5 2 201302
6 3 201302
In [3]: table.groupby('YEARMONTH').CLIENTCODE.nunique()
Out[3]:
YE...
How to get first character of a string in SQL?
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20
@thomasrutter, Looking at an execution plan, SQL Server (at least 2008R2) internally translates LEFT(colName, length) into SUBSTRING(colNam...
Add legend to ggplot2 line plot
... I would plot your data:
##Subset the necessary columns
dd_sub = datos[,c(20, 2,3,5)]
##Then rearrange your data frame
library(reshape2)
dd = melt(dd_sub, id=c("fecha"))
All that's left is a simple ggplot command:
ggplot(dd) + geom_line(aes(x=fecha, y=value, colour=variable)) +
scale_colour_ma...
Fastest way to count exact number of rows in a very large table?
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answered May 20 '11 at 8:23
gbngbn
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How to define static property in TypeScript interface
...static property).
– Jude Fisher
Dec 20 '12 at 17:39
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typeof for RegExp
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answered Dec 2 '10 at 20:08
CleitonCleiton
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How do I get an element to scroll into view, using jQuery?
...ent):
var offset = $(this).offset(); // Contains .top and .left
Subtract 20 from top and left:
offset.left -= 20;
offset.top -= 20;
Now animate the scroll-top and scroll-left CSS properties of <body> and <html>:
$('html, body').animate({
scrollTop: offset.top,
scrollLeft: of...
Conversion of System.Array to List
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Save yourself some pain...
using System.Linq;
int[] ints = new [] { 10, 20, 10, 34, 113 };
List<int> lst = ints.OfType<int>().ToList(); // this isn't going to be fast.
Can also just...
List<int> lst = new List<int> { 10, 20, 10, 34, 113 };
or...
List<int> lst ...
How do the likely/unlikely macros in the Linux kernel work and what is their benefit?
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answered Sep 20 '08 at 23:09
1800 INFORMATION1800 INFORMATION
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