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Efficient way to apply multiple filters to pandas DataFrame or Series
...
e can also select rows based on values of a column that are not in a list or any iterable. We will create boolean variable just like before, but now we will negate the boolean variable by placing ~ in the front.
For example
list = [1...
Detecting 'stealth' web-crawlers
... goes the whole argument. who says web crawlers visits sites in sequential selections? another huge assumption.
– KJW
Oct 9 '13 at 0:34
...
Difference between numpy.array shape (R, 1) and (R,)
...bine or even expand them.
M=np.arange(9).reshape(3,3)
M[:,0].shape # (3,) selects one column, returns a 1d array
M[0,:].shape # same, one row, 1d array
M[:,[0]].shape # (3,1), index with a list (or array), returns 2d
M[:,[0,1]].shape # (3,2)
In [20]: np.dot(M[:,0].reshape(3,1),np.ones((1,3)))
Out...
How do I find the most recent git commit that modified a file?
...script or other automation process. git-log returns information about the selected commits, first by using git-rev-list to gather the commit ids, then gathering information on each commit. If you are just going to filter out the commit information and use the ids, then you can just use git-rev-lis...
Populating a ListView using an ArrayList?
...; arg0, View v,int position, long arg3)
{
String selectedmovie=movies.get(position);
Toast.makeText(getApplicationContext(), "Movie Selected : "+selectedmovie, Toast.LENGTH_LONG).show();
}
});
}
void getmovies()
{
mov...
HSL to RGB color conversion
... CSS 3 specification, which reads:
HOW TO RETURN hsl.to.rgb(h, s, l):
SELECT:
l<=0.5: PUT l*(s+1) IN m2
ELSE: PUT l+s-l*s IN m2
PUT l*2-m2 IN m1
PUT hue.to.rgb(m1, m2, h+1/3) IN r
PUT hue.to.rgb(m1, m2, h ) IN g
PUT hue.to.rgb(m1, m2, h-1/3) IN b
RETURN (r, g, ...
How do I share IntelliJ Run/Debug configurations between projects?
...
goto
Run > Edit Configuration > create or select existing configuration you want to use > click save and persist it on file system > click on share check mark
now copy this file from
PROJECT_ROOT_DIRECTORY/.idea/runConfigurations/ConfigurationName.xml
to ...
JPA or JDBC, how are they different?
... standard for connecting to a DB directly and running SQL against it - e.g SELECT * FROM USERS, etc. Data sets can be returned which you can handle in your app, and you can do all the usual things like INSERT, DELETE, run stored procedures, etc. It is one of the underlying technologies behind most...
Finding what branch a Git commit came from
...ere over 200 candidate branches) to track down the path to each commit.
Selection of a particular --reference-branch --reference tag to examine will be hundreds of times faster (if you have hundreds of candidate branches).
EXAMPLES
# git-what-branch --all 1f9c381fa3e0b9b9042e310c69df87eaf...
How do I copy directories recursively with gulp?
... is the important part. That expression is a glob which is a powerful file selection tool. For example, for copying only .js files use: 'input/folder/**/*.js'
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