Boolean operators && and || Boolean operators && and || r r

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Boolean operators && and ||

r logical-operators boolean-operations or-operator and-operator

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r

Dealing with TRUE, FALSE, NA and NaN

r boolean logical-operators na r-faq

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Logical operators (AND, OR) with NA, TRUE and FALSE

r logical-operators r-faq

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r

Using multiple criteria in subset function and logical operators

r subset logical-operators operator-precedence

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R gotcha: logical-and operator for combining conditions is & not &&

r subset logical-operators

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Subset a data frame using OR when the column contains a factor

r logical-operators

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Is it possible to use an AND operator in grepl()?

r logic logical-operators grepl

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How logical negation operator "!" works

r statistics logical-operators

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Compare a value to null. Why is this true?

r null logical-operators

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