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Python using enumerate inside list comprehension
...t that gets returned is as expected:
> [(0, 'a'), (1, 'b'), (2, 'c'), (3, 'd')]
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How to split a sequence into two pieces by predicate?
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By using partition method:
scala> List(1,2,3,4).partition(x => x % 2 == 0)
res0: (List[Int], List[Int]) = (List(2, 4),List(1, 3))
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Pairs from single list
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answered Jan 7 '11 at 17:35
Jochen RitzelJochen Ritzel
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How do I profile memory usage in Python?
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123
This one has been answered already here: Python memory profiler
Basically you do something like...
python pandas remove duplicate columns
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edited Aug 23 '19 at 13:30
Jean-François Corbett
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Passing an array to a function with variable number of args in Swift
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answered Jun 3 '14 at 20:53
manojldsmanojlds
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undefined method `source_index' for Gem:Module (NoMethodError)
I'm running a Rails 2.3.5 application and upon running script/server I am shown the following:
5 Answers
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How to use string.replace() in python 3.x
The string.replace() is deprecated on python 3.x. What is the new way of doing this?
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In Ruby, is there an Array method that combines 'select' and 'map'?
... as a postfix if. compact gets rid of the nils.
jruby-1.5.0 > [1,1,1,2,3,4].map{|n| n*3 if n==1}
=> [3, 3, 3, nil, nil, nil]
jruby-1.5.0 > [1,1,1,2,3,4].map{|n| n*3 if n==1}.compact
=> [3, 3, 3]
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How to print third column to last column?
... DbgView log file. I can't seem to find an example that prints from column 3 onwards until the end of the line. Note that each line has variable number of columns.
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