Created
February 13, 2010 05:42
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Ruby to turn a delimited string into a list of successive parent paths.
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| require 'pp' | |
| def pathlist( st, delim ) | |
| lst = pl_helper( (st.split delim), []) | |
| lst.map! { |l| | |
| l.join delim | |
| } | |
| end | |
| def pl_helper( lst, accum ) | |
| return accum if lst.empty? | |
| accum.push lst[0..-1] | |
| pl_helper lst[0..-2], accum | |
| end | |
| pp (pathlist "X::Y::Z","::") |
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