isSymbol: Is it a symbol?

In qmrparser: Parser Combinator in R

Is it a symbol?

Description

Checks whether a character is a symbol, a special character.

Usage

isSymbol(ch)

Arguments

ch	character to be checked

Details

These characters are considered as symbols:

'!' , '%' , '&' , '$' , '#' , '+' , '-' , '/' , ':' , '<' , '=' , '>' , '?' , '@' , '\' , '~' , '^' , '|' , '*'

Value

TRUE/FALSE, depending on character being a symbol.

Examples

isSymbol('+')
isSymbol('A')
isSymbol('a')
isSymbol('9')

qmrparser documentation built on April 24, 2022, 1:05 a.m.