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How to print to stderr in Python?
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Leon
26.3k22 gold badges4848 silver badges7979 bronze badges
answered Feb 20 '13 at 13:31
MarcHMarcH
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Run a Python script from another Python script, passing in arguments [duplicate]
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339
Try using os.system:
os.system("script2.py 1")
execfile is different because it is designed...
Getting a map() to return a list in Python 3.x
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Do this:
list(map(chr,[66,53,0,94]))
In Python 3+, many processes that iterate over iterables return iterators themselves. In most cases, this ends up saving memory, and should make things go faster.
If all you're going to do is iterate over thi...
How to search a specific value in all tables (PostgreSQL)?
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133
How about dumping the contents of the database, then using grep?
$ pg_dump --data-only --inser...
What is the difference between sigaction and signal?
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answered Oct 24 '08 at 7:13
Jonathan LefflerJonathan Leffler
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How to easily map c++ enums to strings
...t; MyMap;
map_init(MyMap)
(eValue1, "A")
(eValue2, "B")
(eValue3, "C")
;
The function template <typename T> map_init(T&) returns a map_init_helper<T>.
map_init_helper<T> stores a T&, and defines the trivial map_init_helper& operator()(typename T::key_type...
How can I listen for a click-and-hold in jQuery?
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173
var timeoutId = 0;
$('#myElement').on('mousedown', function() {
timeoutId = setTimeout(myFu...
How to create a DataTable in C# and how to add rows?
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13 Answers
13
Active
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How to count the number of set bits in a 32-bit integer?
...ou may need to adjust it to work for a particular language (e.g. using uint32_t for C++ and >>> in Java):
int numberOfSetBits(uint32_t i)
{
// Java: use int, and use >>> instead of >>
// C or C++: use uint32_t
i = i - ((i >> 1) & 0x55555555);
i =...