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slice returns a subset of a string or list. This is equivalent to using the square-brackets slice operator seq[from:to], but with ordinary function syntax.


Parameter Name Default Value Meaning
seq string or list sequence to get a subsequence of
from number, default 0-based index to the first element to return (if negative, counts from the end)
to number, optional 0-based index of first element to *not* include in the result (if negative, count from the end; if omitted, return the rest of the sequence)


slice("Hello", -2)              // returns "lo"
"Hello"[-2:]                    // equivalent to the above

slice([10,20,30,40,50], 1, 3)   // returns [20, 30]
[10,20,30,40,50][1:3]           // equivalent to the above