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How to get the parents of a Python class?
...
240
Use the following attribute:
cls.__bases__
From the docs:
The tuple of base classes of a ...
How do you list all triggers in a MySQL database?
...atement
from information_schema.triggers
You can do this from version 5.0.10 onwards.
More information about the TRIGGERS table is here.
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fol...
What is PEP8's E128: continuation line under-indented for visual indent?
...project."
– Nick T
May 13 '14 at 22:04
6
...
In Vim, I'd like to go back a word. The opposite of `w`
...nd E will go forward.
– Benoit
Feb 10 '12 at 14:28
1
What's the difference between b and B? Or w...
What is an SDL renderer?
...sition and w, h which holds width and height.
It's important to note that 0, 0 is the upper-left corner in SDL. So a higher y-value means lower, and the bottom-right corner will have the coordinate x + w, y + h
You can read more about SDL2 on my blog.
...
Which is the preferred way to concatenate a string in Python?
...e is the most common. Here are timings with the timeit module:
a = a + b:
0.11338996887207031
a += b:
0.11040496826171875
However, those who recommend having lists and appending to them and then joining those lists, do so because appending a string to a list is presumably very fast compared to ex...
ExecuteReader requires an open and available Connection. The connection's current state is Connectin
...ould be smart to encapsulate ADO.NET functionality into a DB-Class(me too 10 years ago). Mostly they decide to use static/shared objects since it seems to be faster than to create a new object for any action.
That is neither a good idea in terms of peformance nor in terms of fail-safety.
Don't poa...
How to define two fields “unique” as couple
...ple:
class MyModel(models.Model):
field1 = models.CharField(max_length=50)
field2 = models.CharField(max_length=50)
class Meta:
unique_together = ('field1', 'field2',)
And in your case:
class Volume(models.Model):
id = models.AutoField(primary_key=True)
journal_id = models.Foreign...
Javascript !instanceof If Statement
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edited Jan 18 '19 at 21:05
answered Jan 16 '12 at 4:51
Se...
When to create a new app (with startapp) in Django?
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edited Jan 4 '16 at 20:34
kellyfj
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