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Why is '+' not understood by Python sets?
...t int/long) define this operation across a sequence of boolean values and call it "bitwise or". In fact this operation is so similar to the set union that binary integers are sometimes also called "Bit sets", where the elements in the set are taken to be the natural numbers.
Because int already de...
How to update bower.json with installed packages?
In my project I've installed bower components without save option. Now, I would like update to bower.json ?
6 Answers
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Is there a built-in function to print all the current properties and values of an object?
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You are really mixing together two different things.
Use dir(), vars() or the inspect module to get what you are interested in (I use __builtins__ as an example; you can use any object instead).
>>> l = dir(__builtins__)
>...
How to get instance variables in Python?
Is there a built-in method in Python to get an array of all a class' instance variables? For example, if I have this code:
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What does the “-U” option stand for in pip install -U
...find any docs for pip's command line options/arguments. What does pip install -U mean? Does anyone have a link to a list of pip's options and arguments?
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deleting rows in numpy array
... Thanks! I had the same problem, and I could not figure out why simply calling numpy.delete(x, index) didn't work.
– Antimony
Nov 20 '15 at 22:59
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C/C++ include header file order
...chnicus: header is "self-contained"). And the rest just seems to flow logically from there.
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Difference between Observer, Pub/Sub, and Data Binding
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Here's my take on the three:
Data Binding
Essentially, at the core this just means "the value of property X on object Y is semantically bound to the value of property A on object B. No assumptions are made as to how Y knows or is fed changes on object B.
Observer, or Obser...
Does Redis persist data?
I understand that Redis serves all data from memory, but does it persist as well across server reboot so that when the server reboots it reads into memory all the data from disk. Or is it always a blank store which is only to store data while apps are running with no persistence?
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How to use shell commands in Makefile
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With:
FILES = $(shell ls)
indented underneath all like that, it's a build command. So this expands $(shell ls), then tries to run the command FILES ....
If FILES is supposed to be a make variable, these variables need to be assigned outside the recipe portion, e.g.:
F...