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Why use 'git rm' to remove a file instead of 'rm'?
On SVN, removing something from the filesystem directly (rather than using svn) created a load of headaches.
7 Answers
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What is an 'endpoint' in Flask?
... you might go about creating a view, it actually abstracts some extra info from you. Behind the scenes, Flask did not make the leap directly from URL to the view function that should handle this request. It does not simply say...
URL (http://www.example.org/greeting/Mark) should be handled by View ...
What's the strangest corner case you've seen in C# or .NET? [closed]
...t if you simply round up, you will end up with potentially huge difference from the sum of the non-rounded numbers. Very bad if you are doing financial calculations!
– Tsvetomir Tsonev
Oct 12 '08 at 10:05
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Pairs from single list
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My favorite way to do it:
from itertools import izip
def pairwise(t):
it = iter(t)
return izip(it,it)
# for "pairs" of any length
def chunkwise(t, size=2):
it = iter(t)
return izip(*[it]*size)
When you want to pair all elements you...
What's the difference between “groups” and “captures” in .NET regular expressions?
...istory tracker. When the regex makes his match, it goes through the string from left to right (ignoring backtracking for a moment) and when it encounters a matching capturing parentheses, it will store that in $x (x being any digit), let's say $1.
Normal regex engines, when the capturing parenthes...
Check if at least two out of three booleans are true
...e a&&b || b&&c || a&&c version wins then.
Results from Tofubeer with the latest code running OS X:
a&&b || b&&c || a&&c : 1358 ms
a ? b||c : b&&c : 1187 ms
a&b | b&c | c&a : 410 ms
a + b + c >= 2 : 602 ms
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How to ISO 8601 format a Date with Timezone Offset in JavaScript?
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The sign indicates the offset of the local time from GMT
– Steven Moseley
Jul 2 '13 at 0:50
1
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How does zip(*[iter(s)]*n) work in Python?
...re you're passing the same iterator 3 times to zip(), and it pulls an item from the iterator each time.
x = iter([1,2,3,4,5,6,7,8,9])
print zip(x, x, x)
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Mac OSX Lion DNS lookup order [closed]
...cal webserver running on 127.0.0.1:80 and your browser receives a response from the webserver (error or otherwise), no AAAA query is issued, as it seems to be satisfied that a TCP connection was at least possible.
On a related note, if you make heavy use of the hosts file (for adblocking, local w...
Python: fastest way to create a list of n lists
...ly 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 the Python loop using
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