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@ -347,7 +347,7 @@ c(6, 8, 7, 5, 3, 0, 9)[3] # 7
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which(vec %% 2 == 0) # 1 3
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# grab just the first or last few entries in the vector,
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head(vec, 1) # 8
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tail(vec, w) # 10 11
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tail(vec, 2) # 10 11
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# or figure out if a certain value is in the vector
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any(vec == 10) # TRUE
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# If an index "goes over" you'll get NA:
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