How does this help? It's always good to know the more general form of your specializations. Knowing that grep is map+flat list, you can turn chained grep/map into single expressions to avoid traversing your entire list multiple times, once for each step in the chain.

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In reply to Re^4: Deleting Elements from an Array without their Index Number? by diotalevi
in thread Deleting Elements from an Array without their Index Number? by Spidy

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