R/ifrm.R

In Fgmutils: Forest Growth Model Utilities

## Copyright (C) 2016  Clayton Vieira Fraga Filho
##
## This program is free software; you can redistribute it and/or
## modify it under the terms of the GNU General Public License
## as published by the Free Software Foundation; either version 2
## of the License, or (at your option) any later version.
##  
## This program is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
## GNU General Public License for more details.
## 
## You should have received a copy of the GNU General Public License
## along with this program; if not, write to the Free Software
## Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.

##' @title ifrm
##' @description if the object does not exist an error will not happen.
##' @param obj the object that you want to remove
##' @param env The global environment
##' @examples
##' a = 5
##' ifrm(a)
##' ifrm(b)
##' @export
ifrm <- function(obj, env = globalenv()) {
  obj <- deparse(substitute(obj))
  if(exists(obj, envir = env)) {
    rm(list = obj, envir = env)
  }
}