aparler/RosettaCodeData
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Initial data commit

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Ingy döt Net 2023-07-01 11:58:00 -04:00
parent 72d218235f
commit f23f22d71c
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17
Task/Forward-difference/Slate/forward-difference-1.slate Normal file
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s@(Sequence traits) forwardDifference
[
s allButFirst with: s allButLast collect: #- `er
].
s@(Sequence traits) forwardDifference
"Without creating two intermediate throwaway Sequences."
[
result ::= s allButFirst.
result doWithIndex: [| :nextValue :index | result at: index infect: [| :oldValue | oldValue - (s at: index)].
result
].
s@(Sequence traits) forwardDifference: n
[
(0 below: n) inject: s into: [| :seq :_ | seq forwardDifference]
].

2
Task/Forward-difference/Slate/forward-difference-2.slate Normal file
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#data := ##(90 47 58 29 22 32 55 5 55 73).
data keysDo: [| :index | inform: (data forwardDifference: index) printString].