begins: Check Start of Character String

Description Usage Arguments Details Value Author(s) Examples

View source: R/treebranches.R

Description

Checks whether a character string begins with a particular prefix.

Usage

1
begins(x, firstbit)

Arguments

x

Character string, or vector of character strings, to be tested.

firstbit

A single character string.

Details

This simple wrapper function checks whether (each entry in) x begins with the string firstbit, and returns a logical value or logical vector with one entry for each entry of x. This function is useful mainly for reducing complexity in model formulae.

Value

Logical vector of the same length as x.

Author(s)

\adrian \rolf

and \ege

Examples

1
2
  begins(c("Hello", "Goodbye"), "Hell")
  begins("anything", "")

spatstat.linnet documentation built on July 17, 2021, 9:07 a.m.