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mongo - couldn't connect to server 127.0.0.1:27017
...hing to note is the log trace provided does not cover the "Fri Nov 9 16:44:06" of your mongo timestamp.
Can you:
Provide the command line arguments (if any) used to start your
mongod process
Provide the log file activity from the mongod startup as well as
logs during the mongo shell startup atte...
In Python, what is the difference between “.append()” and “+= []”?
...ase the only difference is performance: append is twice as fast.
Python 3.0 (r30:67507, Dec 3 2008, 20:14:27) [MSC v.1500 32 bit (Intel)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import timeit
>>> timeit.Timer('s.append("something")', 's...
Algorithm to return all combinations of k elements from n
...me across is of course memory and pretty quickly, you'll have problems by 20 elements in your set -- 20C3 = 1140. And if you want to iterate over the set it's best to use a modified gray code algorithm so you aren't holding all of them in memory. These generate the next combination from the previous...
Case preserving substitute in Vim
...toMark Lodato
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16
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how to return index of a sorted list? [duplicate]
...list. For example, if the list I want to sort is [2,3,1,4,5] , I need [2,0,1,3,4] to be returned.
7 Answers
...
Difference between Big-O and Little-O Notation
... O(g) says, essentially
For at least one choice of a constant k > 0, you can find a constant a such that the inequality 0 <= f(x) <= k g(x) holds for all x > a.
Note that O(g) is the set of all functions for which this condition holds.
f ∈ o(g) says, essentially
For every c...
List of all index & index columns in SQL Server DB
How do I get a list of all index & index columns in SQL Server 2005+? The closest I could get is:
30 Answers
...
Difference between exit(0) and exit(1) in Python
What's the difference between exit(0) and exit(1) in Python?
5 Answers
5
...
How to print to console in pytest?
... that particular test.
For example,
def test_good():
for i in range(1000):
print(i)
def test_bad():
print('this should fail!')
assert False
Results in the following output:
>>> py.test tmp.py
============================= test session starts =======================...