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Remove all the elements that occur in one list from another
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526
Python has a language feature called List Comprehensions that is perfectly suited to making th...
A semantics for Bash scripts?
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answered Apr 21 '14 at 23:59
kojirokojiro
65.1k1414 gold badges110110 silver badges168168 bronze badges
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Python csv string to array
... StringIO
import csv
scsv = """text,with,Polish,non-Latin,letters
1,2,3,4,5,6
a,b,c,d,e,f
gęś,zółty,wąż,idzie,wąską,dróżką,
"""
f = StringIO(scsv)
reader = csv.reader(f, delimiter=',')
for row in reader:
print('\t'.join(row))
simpler version with split() on newlines:
reader = csv...
Determine the data types of a data frame's columns
...is makes the example exactly reproducible
my.data <- data.frame(y=rnorm(5),
x1=c(1:5),
x2=c(TRUE, TRUE, FALSE, FALSE, FALSE),
X3=letters[1:5])
@Wilmer E Henao H's solution is very streamlined:
sapply(my.data, class)
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What is the proper declaration of main?
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5 Answers
5
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in iPhone App How to detect the screen resolution of the device
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350
CGRect screenBounds = [[UIScreen mainScreen] bounds];
That will give you the entire screen's ...
Pointers vs. values in parameters and return values
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twotwotwotwotwotwo
21.2k55 gold badges5959 silver badges5151 bronze badges
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how to return index of a sorted list? [duplicate]
...ed items in the 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 Ans...
Java recursive Fibonacci sequence
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165
In fibonacci sequence each item is the sum of the previous two. So, you wrote a recursive algori...