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Is it possible to run a single test in MiniTest?
I can run all tests in a single file with:
13 Answers
13
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PDO closing connection
Just a rather simple question with regards to PDO compared to MySQLi.
5 Answers
5
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Getting the docstring from a function
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Interactively, you can display it with
help(my_func)
Or from code you can retrieve it with
my_func.__doc__
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Getting distance between two points based on latitude/longitude
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Edit: Just as a note, if you just need a quick and easy way of finding the distance between two points, I strongly recommend using the approach described in Kurt's answer below instead of re-implementing Haversine -- see his po...
How do I get my Python program to sleep for 50 milliseconds?
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edited Feb 10 '19 at 19:47
ruwan800
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C++对象布局及多态探索之菱形结构虚继承 - C/C++ - 清泛网 - 专注C/C++及内核技术
...0则从C100和C101多重继承而来。
struct C041
{
C041() : c_(0x01) {}
virtual void foo() { c_ = 0x02; }
char c_;
};
struct C100 : public virtual C041
{
C100() : c_(0x02) {}
char c_;
};
struct C101 : public virtual C041
{
C101() : c_(0x03) {}
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JavaScript: What are .extend and .prototype used for?
...eing .extend and .prototype in third party libraries I am using. I thought it had to do with the Prototype javascript library, but I am beginning to think that is not the case. What are these used for?
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Flask-SQLalchemy update a row's information
...tutorial shown in the Flask-SQLAlchemy documentation. Once you have the entity that you want to change, 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...
Assigning a variable NaN in python without numpy
...stant you can use to assign a variable the value NaN. Can python do this without using numpy?
6 Answers
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Rails: around_* callbacks
...cks are invoked before the action, then when you want to invoke the action itself, you yield to it, then continue execution. That's why it's called around
The order goes like this: before, around, after.
So, a typical around_save would look like this:
def around_save
#do something...
yield ...