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When is “i += x” different from “i = i + x” in Python?
...otation of i = i + . Is there a case in which i += 1 would be different from i = i + 1 ?
3 Answers
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How do you read a file into a list in Python? [duplicate]
... list in python (note these are not either or) -
use of with - supported from python 2.5 and above
use of list comprehensions
1. use of with
This is the pythonic way of opening and reading files.
#Sample 1 - elucidating each step but not memory efficient
lines = []
with open("C:\name\MyDocume...
What is an example of the Liskov Substitution Principle?
... to model this with inheritance. However if in code you made Square derive from Rectangle, then a Square should be usable anywhere you expect a Rectangle. This makes for some strange behavior.
Imagine you had SetWidth and SetHeight methods on your Rectangle base class; this seems perfectly logical...
What is the difference between “git branch” and “git checkout -b”?
...r say: "git branch creates the branch but you remain in the current branch FROM WHICH you have checked out."
– Akash Verma
May 16 at 18:03
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How to write to a file, using the logging Python module?
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Taken from the "logging cookbook":
# create logger with 'spam_application'
logger = logging.getLogger('spam_application')
logger.setLevel(logging.DEBUG)
# create file handler which logs even debug messages
fh = logging.FileHandler...
Why is x86 ugly? Why is it considered inferior when compared to others? [closed]
...isters was still a significant weakness for 32-bit x86. x86-64's increase from 8 to 16 integer and vector registers is one of the biggest factors in 64bit code being faster than 32-bit (along with the more efficient register-call ABI), not the increased width of each register. A further increase f...
Swift native base class or NSObject
...n include or omit a superclass as needed.
Note that omitting a superclass from the class declaration, doesn't assign a implicit base superclass of any kind. It defines a base class, which will effectively become the root for an independent class hierarchy.
From the language reference:
Swift cl...
What is the meaning of “non temporal” memory accesses in x86
...30.html . I couldn't find more precise references, I only heard about this from guys whose job is to implement processor simulators.
– Pascal Cuoq
May 4 '10 at 20:03
2
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namedtuple and default values for optional keyword arguments
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Python 3.7
Use the defaults parameter.
>>> from collections import namedtuple
>>> fields = ('val', 'left', 'right')
>>> Node = namedtuple('Node', fields, defaults=(None,) * len(fields))
>>> Node()
Node(val=None, left=None, right=None)
Or b...
Get a specific bit from byte
I have a byte, specifically one byte from a byte array which came in via UDP sent from another device. This byte stores the on/off state of 8 relays in the device.
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