Partial String Matching

Usage

charmatch(x, table, nomatch = NA)

Arguments

x the values to be matched.
table the values to be matched against.
nomatch the value returned at non-matching positions.

Description

charmatch seeks matches for the elements of its first argument among those of its second. If there is a unique match then the index of the matching value is returned; if multiple matches are found then 0 is returned and if no match is found then NA is returned.

This function is based on a C function written by Terry Therneau.

See Also

match pmatch.

Examples

charmatch("", "")                             # returns 1
charmatch("m",   c("mean", "median", "mode")) # returns 0
charmatch("med", c("mean", "median", "mode")) # returns 2

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