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Asked: 2026-05-12T05:20:07+00:00

How to check if a vector contains a given value?

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How to check if a vector contains a given value?

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1 Answer

  1. Editorial Team

    Both the match() (returns the first appearance) and %in% (returns a Boolean) functions are designed for this.

    v <- c('a','b','c','e')

'b' %in% v
## returns TRUE

match('b',v)
## returns the first location of 'b', in this case: 2
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