data.table (version 1.4.1)

like: Convenience function for calling regexpr.

Description

Intended for use in data.table i clause 'where'.

Usage

like(vector,pattern)
vector

Arguments

vector

Either a character vector or a factor. A factor is faster (as you must have in a data.table).

pattern

Passed on to regexpr.

Value

• Integer vector containing the locations of vector which match the pattern using regexpr.

See Also

data.table, regexpr

Examples

DT = data.table(Name=c("Mary","George","Martha"), Salary=c(2,3,4))
    DT[Name %like% "^Mar"]   # select from DT where Name like 'Mar'