wrappr (version 0.1.0)

get_cache_or_create: Checks if variable exists in environment and returns back or creates a new variable

Description

Checks if variable exists in environment and returns back or creates a new variable

Usage

get_cache_or_create(
  var,
  func,
  ...,
  exists_func_args = NA,
  get_func_args = NA,
  warning_msg = NA_character_
)

Value

Unknown. The return type from the param func or the existing variable in global environment.

Arguments

var

character. The name of the variable to check in the global environment.

func

function. A function that returns a value.

...

Additional arguments to be passed to the param func.

exists_func_args

list. A list of arguments to use in base::exists.

get_func_args

list. A list of arguments to use in bass::get.

warning_msg

character. Message sent to stop function if an error occurs.

Examples

if (FALSE) {
df <- data.frame(col_1 = c("a","b","c"), col_2 = c(1,2,3))

create_blank_df <- function() {

    data.frame(col_1 = NA_character_, col_2 = NA_integer_)

    }

df_1 <- get_cache_or_create(
                          "df",
                          create_blank_df
                          )

df_2 <- get_cache_or_create(
                          "df_2",
                          create_blank_df
                          )
}