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Is there any pythonic way to combine two dicts (adding values for keys that appear in both)?
...Counter({'a':1, 'b':2, 'c':3})
>>> B = Counter({'b':3, 'c':4, 'd':5})
>>> A + B
Counter({'c': 7, 'b': 5, 'd': 5, 'a': 1})
Counters are basically a subclass of dict, so you can still do everything else with them you'd normally do with that type, such as iterate over their keys and...
What use is find_package() if you need to specify CMAKE_MODULE_PATH anyway?
...self.
– Dimitrios Menounos
Jan 21 '15 at 8:58
2
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Specifying rails version to use when creating a new application
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504
I found here an undocumented option to create a new application using an older version of Rail...
What are Vertex Array Objects?
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edited Jan 10 '16 at 20:50
Daniel Que
1,63433 gold badges1414 silver badges2929 bronze badges
answered...
What should I use Android AccountManager for?
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95
This question is a bit old, but I think it is still of good interest.
AccountManager, SyncAdapt...
lenses, fclabels, data-accessor - which library for structure access and mutation is better
...0 instead?
– yairchu
Apr 24 '11 at 15:54
55
Oh no! I was the original author of data-accessor, a...
Why do we copy then move?
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answered May 23 '13 at 22:05
Andy ProwlAndy Prowl
111k1818 gold badges348348 silver badges430430 bronze badges
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Why do x86-64 instructions on 32-bit registers zero the upper part of the full 64-bit register?
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Peter Cordes
215k3131 gold badges354354 silver badges524524 bronze badges
answered Jun 24 '12 at 11:53
haroldharold
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Is arr.__len__() the preferred way to get the length of an array in Python?
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my_list = [1,2,3,4,5]
len(my_list)
# 5
The same works for tuples:
my_tuple = (1,2,3,4,5)
len(my_tuple)
# 5
And strings, which are really just arrays of characters:
my_string = 'hello world'
len(my_string)
# 11
It was intentionally done ...
What does LINQ return when the results are empty
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522
It will return an empty enumerable. It wont be null. You can sleep sound :)
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