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Select between two dates with Django
... Is the "created_at" an arbitrary field in a model or is this the databases actual log of when the record was created?
– Bigbob556677
Mar 2 '18 at 14:22
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ObjectiveC Parse Integer from String
...truncated).
I've made a macro that will convert input text to an NSNumber based on a locale argument which can be nil (if nil it uses device current locale).
#define stringToNumber(__string, __nullable_locale) (\
(^NSNumber *(void){\
NSLocale *__locale = __nullable_locale;\
if (!__locale) {\
__loca...
Reverse colormap in matplotlib
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As a LinearSegmentedColormaps is based on a dictionary of red, green and blue, it's necessary to reverse each item:
import matplotlib.pyplot as plt
import matplotlib as mpl
def reverse_colourmap(cmap, name = 'my_cmap_r'):
"""
In:
cmap, name
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How to calculate age (in years) based on Date of Birth and getDate()
...ultiplying by 100? This works for me as I'm trying to replicate in the database what exists in our code library - but I couldn't explain your function. This might be a stupid question :)
– Jen
Sep 25 '13 at 5:30
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What is a proper naming convention for MySQL FKs?
...able somewhere with no idea which table it belongs to. The older your code base is and the more people have worked on it, the more likely this becomes.
– CJ Dennis
Apr 26 '18 at 8:15
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How do I get the directory from a file's full path?
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BrandonBrandon
64.2k2929 gold badges186186 silver badges217217 bronze badges
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Can't use Swift classes inside Objective-C
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I spent about 4 hours trying to enable Swift in my Xcode Objective-C based project. My myproject-Swift.h file was created successfully, but my Xcode didn't see my Swift-classes. So, I decided to create a new Xcode Objc-based project and finally, I found the right answer! Hope this post will he...
Why do some functions have underscores “__” before and after the function name?
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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Backbone View: Inherit and extend events from parent
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Wouldn't it be easier to create specialized base constructor from Backbone.View that handles the inheritance of events up the hierarchy.
BaseView = Backbone.View.extend {
# your prototype defaults
},
{
# redefine the 'extend' function as decorated function of ...
What is the performance cost of having a virtual method in a C++ class?
...ing as virtual. If all functions are virtual everything can be replaced by base classes - public, protected, private - everything becomes fair game. By accident or intention subclasses could then change the behavior of functions that then cause problems when used in the base implementation.
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