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Python: fastest way to create a list of n lists
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The probably only way which is marginally faster than
d = [[] for x in xrange(n)]
is
from itertools import repeat
d = [[] for i in repeat(None, n)]
It does not have to create a new int object in every iteration and is about 15 % faster on my machine.
Edit: Using NumPy, you can avoid t...
Which is more efficient, a for-each loop, or an iterator?
... there is no difference between using an iterator or the new for loop syntax, as the new syntax just uses the iterator underwater.
If however, you mean by loop the old "c-style" loop:
for(int i=0; i<list.size(); i++) {
Object o = list.get(i);
}
Then the new for loop, or iterator, can be a ...
How to make connection to Postgres via Node.js
.../usr/local/pgsql/data now how can I interact with this through node? For example, what would the connectionstring be, or how am I able to find out what it is.
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Why are Python's 'private' methods not actually private?
...rscores to the name, like this: __myPrivateMethod() . How, then, can one explain this
12 Answers
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How many double numbers are there between 0.0 and 1.0?
...it fraction; between any two adjacent powers of two (inclusive of one and exclusive of the next one), there will therefore be 2 to the 52th power different doubles (i.e., 4503599627370496 of them). For example, that's the number of distinct doubles between 0.5 included and 1.0 excluded, and exactly...
What to do Regular expression pattern doesn't match anywhere in string?
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Contrary to all the answers here, for what you're trying to do regex is a perfectly valid solution. This is because you are NOT trying to match balanced tags-- THAT would be impossible with regex! But you are only matching what's in one tag, and that's perfectly regular.
Here's the problem,...
sbt-assembly: deduplication found error
I am not sure whether mergestrategy or exclude jars is the best option here. Any help with how do I proceed further with this error will be great!
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Get specific line from text file using just shell script
I am trying to get a specific line from a text file.
10 Answers
10
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What is the precise meaning of “ours” and “theirs” in git?
... the actual branch name might be pretty cool, it falls apart in more complex cases. For instance, instead of the above, you might do:
git checkout ours
git merge 1234567
where you're merging by raw commit-ID. Worse, you can even do this:
git checkout 7777777 # detach HEAD
git merge 1234567 ...
How to revert uncommitted changes including files and folders?
... a git command to revert all uncommitted changes in a working tree and index and to also remove newly created files and folders?
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