Returns the index of the first match in a reference table

Usage

match_first(x, table, nomatch = NA_integer_, incomparables = NULL)

Arguments

x

vector or NULL: the values to be matched. Long vectors are supported.

table

vector or NULL: the values to be matched against. Long vectors are not supported.

nomatch

the value to be returned in the case when no match is found. Note that it is coerced to integer.

incomparables

a vector of values that cannot be matched. Any value in x matching a value in this vector is assigned the nomatch value. For historical reasons, FALSE is equivalent to NULL.

See also

match, charmatch