assertr (version 2.7)

has_all_names: Returns TRUE if data.frame or list has specified names

Description

This function checks parent frame environment for existence of names. This is meant to be used with `assertr`'s `verify` function to check for the existence of specific column names in a `data.frame` that is piped to `verify`. It can also work on a non-`data.frame` list.

Usage

has_all_names(...)

Arguments

...

A arbitrary amount of quoted names to check for

Value

TRUE is all names exist, FALSE if not

See Also

exists

Examples

# NOT RUN {
verify(mtcars, has_all_names("mpg", "wt", "qsec"))

library(magrittr)   # for pipe operator

# }
# NOT RUN {
mtcars %>%
  verify(has_all_names("mpgg"))  # fails
# }
# NOT RUN {
mpgg <- "something"

mtcars %>%
  verify(exists("mpgg"))   # passes but big mistake

# }
# NOT RUN {
mtcars %>%
  verify(has_all_names("mpgg")) # correctly fails
# }
# NOT RUN {
# }

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