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What's the difference between HEAD, working tree and index, in Git?
Can someone tell me the difference between HEAD, working tree and index, in Git?
5 Answers
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What is the difference between NaN and None?
I am reading two columns of a csv file using pandas readcsv() and then assigning the values to a dictionary. The columns contain strings of numbers and letters. Occasionally there are cases where a cell is empty. In my opinion, the value read to that dictionary entry should be None but instead ...
What is the difference between an annotated and unannotated tag?
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Jaime Lomeli R.
322 bronze badges
answered Jul 16 '12 at 23:39
Todd A. JacobsTodd A. Jacobs
67.5k1313 gold...
Python : List of dict, if exists increment a dict value, if not append a new dict
...] += 1
If you access the defaultdict using a key, and the key is not already in the defaultdict, the key is automatically added with a default value. The defaultdict takes the callable you passed in, and calls it to get the default value. In this case, we passed in class int; when Python calls i...
Flask-SQLalchemy update a row's information
...hange, change the entity itself. Then, db.session.commit().
For example:
admin = User.query.filter_by(username='admin').first()
admin.email = 'my_new_email@example.com'
db.session.commit()
user = User.query.get(5)
user.name = 'New Name'
db.session.commit()
Flask-SQLAlchemy is based on SQLAlchem...
Android Gallery on Android 4.4 (KitKat) returns different URI for Intent.ACTION_GET_CONTENT
... {
Intent intent = new Intent(Intent.ACTION_OPEN_DOCUMENT);
intent.addCategory(Intent.CATEGORY_OPENABLE);
intent.setType("image/jpeg");
startActivityForResult(intent, GALLERY_KITKAT_INTENT_CALLED);
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data...
Python Logging (function name, file name, line number) using a single file
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Rose Perrone
53.4k4747 gold badges191191 silver badges222222 bronze badges
answered Jun 11 '12 at 4:29
Matthew SchinckelMatthew Sc...
vs vs for inline and block code snippets
...le output, so I would avoid using it to represent sample code (which the reader is to input). This is what Stack Overflow does.
(Better yet, if you want easy to maintain, let the users edit the articles as Markdown, then they don’t have to remember to use <pre><code>.)
HTML5 agrees w...
With CSS, use “…” for overflowed block of multi-lines
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Milan Jaros
1,0171414 silver badges1818 bronze badges
answered Jun 3 '11 at 5:22
Jim ThomasJim Thomas
1,6181...
How to add a custom button state
...tation by the inflater and depends on the type of project in which you are adding attributes. If it is an application, replace com.mydomain.mypackage with the actual package name of your application (application name excluded). If it is a library you must use "http://schemas.android.com/apk/res-auto...