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

is_null_list {dendextend} | R Documentation

## 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)

[Package dendextend version 1.8.0 Index]