arcgisutils (version 0.4.0)

compact: General utility functions

Description

General utility functions

Usage

compact(.x)
a %||% b
check_dots_named(dots, call = rlang::caller_env())
data_frame(x, call = rlang::caller_call())

Value

• compact() a list

• %||% the first non-null item or NULL if both are NULL

Arguments

.x

a list

a

an R object

b

an R object

dots

a list collected from dots via rlang::list2(...)

call

default rlang::caller_call().

x

a data.frame

Details

• compact() removes any NULL list elements

• %||% is a special pipe operator that returns b if a is NULL

Examples

# remove null elements
compact(list(a = NULL, b = 1))

# if NULL return rhs
NULL %||% 123

# if not NULL return lhs
123 %||% NULL