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Rank function in MySQL
...erson VALUES (5, 'Nick', 22, 'M');
INSERT INTO person VALUES (6, 'Kathy', 18, 'F');
INSERT INTO person VALUES (7, 'Steve', 36, 'M');
INSERT INTO person VALUES (8, 'Anne', 25, 'F');
Result:
+------------+------+--------+------+
| first_name | age | gender | rank |
+------------+------+--------+--...
Regular expression to match numbers with or without commas and decimals in text
...ure the whole thing wasn't blank.
Tested here: http://rextester.com/YPG96786
This will allow things like:
100,000
999.999
90.0009
1,000,023.999
0.111
.111
0
It will block things like:
1,1,1.111
000,001.111
999.
0.
111.110000
1.1.1.111
9.909,888
There are several ways to make this regex simpler an...
Bootstrap 3 offset on right not left
...
Ross AllenRoss Allen
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2
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Flatten an Array of Arrays in Swift
...
448
Swift >= 3.0
reduce:
let numbers = [[1,2,3],[4],[5,6,7,8,9]]
let reduced = numbers.reduce([...
How to work around the stricter Java 8 Javadoc when using Maven
You'll quickly realize that JDK8 is a lot more strict (by default) when it comes to Javadoc. ( link - see last bullet point)
...
Shuffle two list at once with same order
...an?
– ᔕᖺᘎᕊ
Apr 2 '15 at 16:18
2
@ᔕᖺᘎᕊ, It means unpack the values of c so it is c...
How to drop columns by name in a data frame
...
389
You should use either indexing or the subset function. For example :
R> df <- data.frame...
In OS X Lion, LANG is not set to UTF-8, how to fix it?
...ur locale settings upon initiating a new session.
export LC_ALL=en_US.UTF-8
export LANG=en_US.UTF-8
These two lines added to the file should suffice to set the locale [replace en_US for your desired locale, and check beforehand that it is indeed installed on your system (locale -a)].
After tha...
Multiple linear regression in Python
...model.LinearRegression()
clf.fit([[getattr(t, 'x%d' % i) for i in range(1, 8)] for t in texts],
[t.y for t in texts])
Then clf.coef_ will have the regression coefficients.
sklearn.linear_model also has similar interfaces to do various kinds of regularizations on the regression.
...