nn: Replace NULL with character()

In pobsteta/shinyCNES: An Amazing Shiny App

Description

Internal function: return character(0) instead of NULL. This is sometimes needed not to return error when applying some functions.

Usage

nn(x)

Arguments

x	Input variable

Value

'character(0)' if 'x==NULL', 'x' elsewhere

Note

License: GPL 3.0

Author(s)

Luigi Ranghetti, phD (2019) [e-mail]

Examples

tryCatch(basename(NULL), error = print) # error
basename(character()) # ok
basename(shinyCNES:::nn(NULL)) # ok

pobsteta/shinyCNES documentation built on April 28, 2021, 9:43 a.m.