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How can I read command line parameters from an R script?
..." and this value is picked up by commandArgs and fed into args[2], and the range command x=1:10 executed by R successfully, etc etc.
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Exit codes in Python
...nation” by shells and
the like. Most systems require it to
be in the range 0-127, and produce
undefined results otherwise. Some
systems have a convention for
assigning specific meanings to
specific exit codes, but these are
generally underdeveloped; Unix
programs generally use 2 fo...
Python string prints as [u'String']
... you do a list comprehension: my_list = [str(my_list[x]) for x in range(len(my_list))]
– gevang
Jun 15 '16 at 16:40
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How can I get every nth item from a List?
...) select element;
2nd Edit:
To make it even more LINQish
from var i in Range(0, ((myList.Length-1)/n)+1) select list[n*i];
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Appending the same string to a list of strings in Python
...t string
import time
mystring = '/test/'
l = []
ref_list = []
for i in xrange( 10**6 ):
ref_list.append( ''.join(random.choice(string.ascii_lowercase) for i in range(10)) )
for numOfElements in [5, 10, 15 ]:
l = ref_list*numOfElements
print 'Number of elements:', len(l)
l1 = li...
Add object to ArrayList at specified index
...which says it throws IndexOutOfBoundsException - if the index is out of range (index < 0 || index > size())
Check the size() of your list before you call list.add(1, object1)
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What is the difference between sed and awk? [closed]
... course those are just very simple examples that don't illustrate the full range of capabilities that each has to offer.
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How can I get the count of milliseconds since midnight for the current?
...finer resolution of nanoseconds. That means the number of nanoseconds will range from from 0 to 999,999,999.
long nanosFractionOfSecond = zdt.getNano();
If you truly want milliseconds, truncate the finer data by dividing by one million. For example, a half second is 500,000,000 nanoseconds and a...
grep, but only certain file extensions
... This example seems to have a high score because it covers such a wide range of possibilites but the answer given below of grep -r --include=*.txt 'searchterm' ./ really explains the essence of the answer
– David Casper
Jan 27 '17 at 1:44
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Create a dictionary with list comprehension
...>> dict(ts)
{1: 2, 3: 4, 5: 6}
>>> gen = ((i, i+1) for i in range(1, 6, 2))
>>> gen
<generator object <genexpr> at 0xb7201c5c>
>>> dict(gen)
{1: 2, 3: 4, 5: 6}
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