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How to re import an updated package while in Python Interpreter? [duplicate]
I often test my module in the Python Interpreter, and when I see an error, I quickly update the .py file. But how do I make it reflect on the Interpreter ? So, far I have been exiting and reentering the Interpreter because re importing the file again is not working for me.
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How to check if a string contains a substring in Bash
... that spaces in the needle string need to be placed between double quotes, and the * wildcards should be outside. Also note that a simple comparison operator is used (i.e. ==), not the regex operator =~.
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Check if object is file-like in Python
...ts are objects in Python that behave like a real file, e.g. have a read() and a write method(), but have a different implementation. It is and realization of the Duck Typing concept.
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When to use Common Table Expression (CTE)
I have begun reading about Common Table Expression and cannot think of a use case where I would need to use them. They would seem to be redundant as the same can be done with derived tables. Is there something I am missing or not understanding well? Can someone give me a simple example of limitati...
Most underused data visualization [closed]
Histograms and scatterplots are great methods of visualizing data and the relationship between variables, but recently I have been wondering about what visualization techniques I am missing. What do you think is the most underused type of plot?
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AngularJS : Where to use promises?
...to be a complete answer to your question, but hopefully this will help you and others when you try to read the documentation on the $q service. It took me a while to understand it.
Let's set aside AngularJS for a moment and just consider the Facebook API calls. Both the API calls use a callback m...
Caveats of select/poll vs. epoll reactors in Twisted
Everything I've read and experienced ( Tornado based apps ) leads me to believe that ePoll is a natural replacement for Select and Poll based networking, especially with Twisted. Which makes me paranoid, its pretty rare for a better technique or methodology not to come with a price.
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Should I use the datetime or timestamp data type in MySQL?
Would you recommend using a datetime or a timestamp field, and why (using MySQL)?
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How to set Sqlite3 to be case insensitive when string comparing?
...ocase in the column definition (the other options are binary (the default) and rtrim; see here). You can specify collate nocase when you create an index as well. For example:
create table Test
(
Text_Value text collate nocase
);
insert into Test values ('A');
insert into Test values ('b');
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ORA-30926: unable to get a stable set of rows in the source tables
...cified in USING clause. This probably means that TABLE_A is a parent table and the same ROWID is returned several times.
You could quickly solve the problem by using a DISTINCT in your query (in fact, if 'Y' is a constant value you don't even need to put it in the query).
Assuming your query is co...