r - Splitting a string using variable offset -
i want substrings of size n , and offset o string.
for example, given "abcdef" , substrings of size = 3, offset = 1. want obtain set "abc","bcd", "cde", "def". 
in mathematica, can done partition or stringpartition. 
is there similar function in r?
you can write wrapper (thanks @thelatemail):
subs = function(x, size, offset){   nc    = nchar(x)   first = seq(1, nc-size+1l, by=offset)   last  = first + size -1l   substring(x, first, last) }   subs("abcde",3, 1) [1] "abc" "bcd" "cde"      
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