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Logic to test that 3 of 4 are True
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If this had been Python, I would have written
if [a, b, c, d].count(True) == 3:
Or
if [a, b, c, d].count(False) == 1:
Or
if [a, b, c, d].count(False) == True:
# In Python True == 1 and False == 0
Or
print [a, b, c, d].count(0) == 1
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Client to send SOAP request and receive response
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how received file and transform in PDF?
– Leandro
Feb 20 '19 at 12:09
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What's the best way to parse a JSON response from the requests library?
I'm using the python requests module to send a RESTful GET to a server, for which I get a response in JSON. The JSON response is basically just a list of lists.
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How to check if a file exists in Go?
...not have a function solely intended to check if a file exists or not (like Python's os.path.exists ). What is the idiomatic way to do it?
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Set “this” variable easily?
... Specification: ecma-international.org/publications/files/ECMA-ST/Ecma-262.pdf
– some
Jan 19 '09 at 9:26
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Why are empty strings returned in split() results?
... I was shocked to discover that curly quotes are actually valid in Python...but, but...how? The docs don't seem to mention this.
– Tim Pietzcker
Oct 8 '12 at 11:18
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How to use range-based for() loop with std::map?
... this paper: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2006/n2049.pdf
for( type-specifier-seq simple-declarator : expression ) statement
is syntactically equivalent to
{
typedef decltype(expression) C;
auto&& rng(expression);
for (auto begin(std::For<C>::begin(...
Initializing a struct to 0
...st notably this is already C89: open-std.org/JTC1/SC22/WG14/www/docs/n1124.pdf#page=139 (Important for specific signal processing targets)
– Tobias
Jul 2 '19 at 14:55
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What does enumerate() mean?
What does for row_number, row in enumerate(cursor): do in Python?
5 Answers
5
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How to get all subsets of a set? (powerset)
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The Python itertools page has exactly a powerset recipe for this:
from itertools import chain, combinations
def powerset(iterable):
"powerset([1,2,3]) --> () (1,) (2,) (3,) (1,2) (1,3) (2,3) (1,2,3)"
s = list(iterabl...