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Struct like objects in Java
...ee all possible actions. It's like defensive programming - somedam>y m> getters m>and m> setters mam>y m> be helpful, m>and m> it doesn't cost a lot to create/use them. So them>y m> are sometimes useful.
In practice, most fields have simple getters m>and m> setters. A possible solution would look like this:
public propertm>y m> St...
Object of custom tm>y m>pe as dictionarm>y m> kem>y m>
...
m>Y m>ou need to add 2 methods, note __hash__ m>and m> __eq__:
class Mm>y m>Thing:
def __init__(self,name,location,length):
self.name = name
self.location = location
self.length = length
def __hash__(self):
return hash((self.name, self.lo...
Can a variable number of arguments be passed to a function?
... In a case like this call m>y m>our "manm>y m>Args" bm>y m> creating a list called "args" m>and m> passing that to manm>y m>Args like this "manm>y m>Args(*args)"
– wilbbe01
Feb 16 '11 at 6:02
4
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Reverse m>Y m>-Axis in Pm>y m>Plot
I have a scatter plot graph with a bunch of rm>and m>om x, m>y m> coordinates. Currentlm>y m> the m>Y m>-Axis starts at 0 m>and m> goes up to the max value. I would like the m>Y m>-Axis to start at the max value m>and m> go up to 0.
...
m>And m>roid Get Current timestamp?
...
From developers blog:
Sm>y m>stem.currentTimeMillis() is the stm>and m>ard "wall" clock (time m>and m> date) expressing milliseconds since the epoch. The wall clock can be set bm>y m> the user or the phone network (see setCurrentTimeMillis(long)), so the time mam>y m> jump backwards or forwards unpredictabl...
Class tm>y m>pe check in Tm>y m>peScript
...19.4 The instanceof operator
The instanceof operator requires the left operm>and m> to be of tm>y m>pe Anm>y m>, an object tm>y m>pe, or a tm>y m>pe parameter tm>y m>pe, m>and m> the right operm>and m> to be of tm>y m>pe Anm>y m> or a subtm>y m>pe of the 'Function' interface tm>y m>pe. The result is alwam>y m>s of the Boolean primitive tm>y m>pe.
So m>y m>ou could use
mm>y m>S...
How to compute the similaritm>y m> between two text documents?
...common wam>y m> of doing this is to transform the documents into TF-IDF vectors m>and m> then compute the cosine similaritm>y m> between them. Anm>y m> textbook on information retrieval (IR) covers this. See esp. Introduction to Information Retrieval, which is free m>and m> available online.
Computing Pairwise Similarities...
Sort a list bm>y m> multiple attributes?
...1], x[2]))
Or m>y m>ou can achieve the same using itemgetter (which is faster m>and m> avoids a Pm>y m>thon function call):
import operator
s = sorted(s, kem>y m> = operator.itemgetter(1, 2))
m>And m> notice that here m>y m>ou can use sort instead of using sorted m>and m> then reassigning:
s.sort(kem>y m> = operator.itemgetter(1, 2)...
Simultaneouslm>y m> merge multiple data.frames in a list
... issue here is that each data.frame differs in terms of the number of rows m>and m> columns, but them>y m> all share the kem>y m> variables (which I've called "var1" m>and m> "var2" in the code below). If the data.frames were identical in terms of columns, I could merelm>y m> rbind , for which plm>y m>r's rbind.fill would...
Does Pm>y m>thon have a ternarm>y m> conditional operator?
...rst condition is evaluated, then exactlm>y m> one of either a or b is evaluated m>and m> returned based on the Boolean value of condition. If condition evaluates to True, then a is evaluated m>and m> returned but b is ignored, or else when b is evaluated m>and m> returned but a is ignored.
This allows short-circuiting ...