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Converting JSONarray to ArrayList
...n the github gist.github.com/codebutler/2339666
– inexcii
Aug 27 '14 at 1:54
2
Why not use an Arr...
What exactly does += do in python?
...e object appending each element to itself in the same way that the list's extend method does.
Here's a simple custom class that implements the __iadd__ special method. You initialize the object with an int, then can use the += operator to add a number. I've added a print statement in __iadd__ to s...
C++: How to round a double to an int? [duplicate]
I have a double (call it x), meant to be 55 but in actuality stored as 54.999999999999943157 which I just realised.
5 Answe...
How to count the number of set bits in a 32-bit integer?
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How to draw vertical lines on a given plot in matplotlib?
...l in time representation, how to draw lines marking corresponding time index?
6 Answers
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For each row in an R dataframe
... B P2 2 200
3 C P3 3 300
> f <- function(x, output) {
wellName <- x[1]
plateName <- x[2]
wellID <- 1
print(paste(wellID, x[3], x[4], sep=","))
cat(paste(wellID, x[3], x[4], sep=","), file= output, append = T, fill = T)
}
> apply(d, 1, f, output = '...
Get the client IP address using PHP [duplicate]
...))
$ipaddress = getenv('HTTP_CLIENT_IP');
else if(getenv('HTTP_X_FORWARDED_FOR'))
$ipaddress = getenv('HTTP_X_FORWARDED_FOR');
else if(getenv('HTTP_X_FORWARDED'))
$ipaddress = getenv('HTTP_X_FORWARDED');
else if(getenv('HTTP_FORWARDED_FOR'))
$ipaddress = g...
How to get a reference to current module's attributes in Python
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A classic case of "I need X (to get Y done) -> You don't need X you need Z". I do need X though! No offense, I just find this amusing, and the most voted answer gives me the answer I need :)
– pawamoy
Sep 14 '...
Explain how finding cycle start node in cycle linked list work?
I understand that Tortoise and Hare's meeting concludes the existence of loop, but how does moving tortoise to beginning of linked list while keeping the hare at meeting place, followed by moving both one step at a time make them meet at starting point of cycle?
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Binary search (bisection) in Python
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from bisect import bisect_left
def binary_search(a, x, lo=0, hi=None): # can't use a to specify default for hi
hi = hi if hi is not None else len(a) # hi defaults to len(a)
pos = bisect_left(a, x, lo, hi) # find insertion position
return pos if pos != hi and ...