lg: length( grep( ... ) )

In GarrettMooney/moonmisc: Personal Utility Functions

Description

This is a wrapper to a length( grep( ... ) ). See examples for usage. Primarily intended for interactive, not programmatic, use.

Usage

lg(x, pattern, perl = TRUE, ...)

Arguments

x	a vector on which we attempt to match pattern on.
pattern	regex pattern passed to grep.
perl	boolean. use perl-compatible regular expressions?
...	additional arguments passed to grep.

See Also

re_exists

Examples

x <- c("apple", "banana", "cherry")
if( lg( x, "^ap" ) > 0 ) {
  print( "regular expression '^ap' found in 'x'" )
  }

GarrettMooney/moonmisc documentation built on Oct. 19, 2019, 7:51 p.m.