Variable declaration reset: Difference between revisions
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→{{header|Red}}: add some comments
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=={{header|Red}}==
* Blocks start at index 1 in Red.
* <code>all</code> short-circuits, so <code>prev</code> will be defined by the time <code>curr = prev</code> is checked.
<lang rebol>Red[]
s: [1 2 2 3 4 4 5]
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