dendextend (version 1.4.0)

is_null_list: Checks if the value is and empty list()

Description

Checks if the value is and empty list(). Can be useful.

Usage

is_null_list(x)

Arguments

x

whatever object to check

Value

logical

Examples

# I can run this only if I'd make is_null_list exported
## Not run: 
# # TRUE:
# is_null_list(list())
# # FALSE
# is_null_list(list(1))
# is_null_list(1)
# 
# x <- list(1, list(), 123)
# ss_list <- sapply(x, is_null_list)
# x <- x[!ss_list]
# x
# 
# x <- list(1, list(), 123)
# ss_list <- sapply(x, is_null_list)
# x <- list(list())
# x
# ## End(Not run)

## Not run: 
# # error
# is_null_list() 
# ## End(Not run)