79144411

Date: 2024-10-31 10:53:28
Score: 1
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something like this (using vals and arr from your example)?


    the_letter <- 'B'
    
    
    picklist <- Map(vals, f = \(val) ifelse(val == the_letter, 1, TRUE))
    do.call(`[`, c(list(x = arr), picklist))
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Posted by: I_O