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How is “=default” different from “{}” for default constructor and destructor?
I originally posted this as a question only about destructors, but now I'm adding consideration of the default constructor. Here's the original question:
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Python: print a generator expression?
...e generator expression into a list comprehension. It's the same thing and calling list() on it. So the way to make a generator expression into a list is to put brackets around it.
Detailed explanation:
A generator expression is a "naked" for expression. Like so:
x*x for x in range(10)
Now, you ...
MySQL Cannot Add Foreign Key Constraint
...storyID is an INT, Patient.MedicalHistory also needs to be an INT, not a SMALLINT.
Also, you should run the query set foreign_key_checks=0 before running the DDL so you can create the tables in an arbitrary order rather than needing to create all parent tables before the relevant child tables.
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How can I check if my python object is a number? [duplicate]
In Java the numeric types all descend from Number so I would use
5 Answers
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How to run test cases in a specified file?
...red across multiple files, if I run go test <package_name> it runs all test cases in the package.
7 Answers
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How to get GET (query string) variables in Express.js on Node.js?
...eJS, you can access req.url and the builtin url module to url.parse it manually:
var url = require('url');
var url_parts = url.parse(request.url, true);
var query = url_parts.query;
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Bash command to sum a column of numbers [duplicate]
...mn of numbers. I just want a quick one liner that will do something essentially like this:
10 Answers
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Sphinx autodoc is not automatic enough
...for modules project.module1 and project.module2 will be generated automatically and placed into _autosummary directory.
PROJECT
=======
.. toctree::
.. autosummary::
:toctree: _autosummary
project.module1
project.module2
By default autosummary will generate only very short summaries fo...
Throwing exceptions from constructors
...ody who creates the object of mutex has to remember that init() has to be called. I feel it goes against the RAII principle.
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How do I write JSON data to a file?
... codecs.getwriter('utf-8')(f), ensure_ascii=False)
The codecs.getwriter call is redundant in Python 3 but required for Python 2
Readability and size:
The use of ensure_ascii=False gives better readability and smaller size:
>>> json.dumps({'price': '€10'})
'{"price": "\\u20ac10"}'
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