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How do I get the current time zone of MySQL?
...alues are not stored with timezone information in MySQL:
mysql> create table foo (tstamp datetime) Engine=MyISAM;
Query OK, 0 rows affected (0.06 sec)
mysql> insert into foo (tstamp) values (now());
Query OK, 1 row affected (0.00 sec)
mysql> set time_zone = '+01:00';
Query OK, 0 rows aff...
What is the difference between the template method and the strategy patterns?
.... Choosing which product type (class) to instantiate might depend on which tables/views it's loaded from. Strategy pattern doesn't really come into play there.
– tvanfosson
Jul 31 '15 at 16:22
...
How do I write a “tab” in Python?
...s are replaced by the intended meaning of the escape sequence.
Here is a table of some of the more useful escape sequences and a description of the output from them.
Escape Sequence Meaning
\t Tab
\\ Inserts a back slash (\)
\' Insert...
Unique BooleanField value in Django?
...d that some of them address the same issue successfully and each one is suitable in different situations:
I would choose:
@semente: Respects the constraint at the database, model and admin form levels while it overrides Django ORM the least possible. Moreover it can probably be used inside a thr...
Flask-SQLAlchemy import/context issue
... id = db.Column(db.Integer, primary_key=True)
...
# Create the database tables.
db.create_all()
...
# start the flask loop
app.run()
I just splitted one app.py to app.py and model.py without using Blueprint. In that case, the above answer dosen't work. A line code is needed to work.
before:
...
How can I merge properties of two JavaScript objects dynamically?
...ties versus just copying or defining new properties. This may make it unsuitable for merging new properties into a prototype if the merge sources contain getters." (developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/…). I had to use var merged = {...obj1, ...obj2}.
– m...
PHP: Storing 'objects' inside the $_SESSION
... it on every request. Then the server uses that ID as a key into a big hashtable of Session objects. Whenever the server gets a request, it looks up the Session info out of its hashtable of session objects based on the ID the client submitted with the request. All this extra work is a double whammy ...
Can functions be passed as parameters?
... example of how to best use this idea! I have recreated it using an lookup table of structs that store info, including a pointer to the function you wish to execute. Perfect for this!
– James O'Toole
Oct 31 '16 at 5:16
...
Is there a way to auto-adjust Excel column widths with pandas.ExcelWriter?
...e SQL Server data into a dataframe
my_sql_query = """ SELECT * FROM dbo.my_table """
my_dataframe = pd.read_sql_query(my_sql_query,con=read_engine)
#Set destination directory to save excel.
xlsFilepath = r'H:\my_project' + "\\" + 'my_file_name.xlsx'
writer = pd.ExcelWriter(xlsFilepath, engine='xlsx...
How to use LINQ to select object with minimum or maximum property value
...lower than the other solution suggested. However, if this is a LINQ to SQL table and DateOfBirth is an indexed column, then SQL Server will use the index instead of sorting all the rows. Other custom IEnumerable<T> implementations could also make use of indexes (see i4o: Indexed LINQ, or the o...