Package: arg 0.1.1

arg: Clean and Simple Argument Checking

Checks function arguments, ideally for use in R packages. Uses a simple interface and produces clean, informative error messages using 'cli'.

Authors:Noah Greifer [aut, cre]

# Install 'arg' in R:

install.packages('arg', repos = c('https://ngreifer.r-universe.dev', 'https://cloud.r-project.org'))

On CRAN:

Last updated from:b614e99ec8. Checks:9 OK. Indexed: yes.

Target	Result	Time
linux-devel-x86_64	OK	108
source / vignettes	OK	141
linux-release-x86_64	OK	102
macos-release-arm64	OK	81
macos-oldrel-arm64	OK	70
windows-devel	OK	66
windows-release	OK	89
windows-oldrel	OK	71
wasm-release	OK	88

Dependencies:cli rlang

Help page	Topics
Check Values in Range	arg_between arg_gt arg_gte arg_lt arg_lte
Check Character Argument	arg_character arg_factor arg_string
Check Common Argument Types	arg_array arg_atomic arg_data arg_data.frame arg_env arg_list arg_matrix arg_vector
Check Supplied Dots Argument	arg_dots_not_supplied arg_dots_supplied
Check Element	arg_element arg_not_element
Check Equal Arguments	arg_equal arg_not_equal
Check Formula Argument	arg_formula
Check Function Argument	arg_function
Check Index Argument	arg_index arg_indices
Check Argument Class	arg_is arg_is_not
Check Argument Length	arg_length
Check Logical Argument	arg_flag arg_logical
Check Named Argument	arg_colnamed arg_named
Check NA in Argument	arg_all_NA arg_is_NA arg_no_NA
Check NULL Argument	arg_non_null arg_null
Check Numeric Argument	arg_count arg_counts arg_number arg_numeric arg_whole_number arg_whole_numeric
Check That Arguments Meet Some or All Criteria	arg_and arg_or
Check Supplied Argument	arg_supplied
Check Symmetric Matrix Argument	arg_cor arg_cov arg_distance arg_symmetric
Check Unique Argument	arg_unique
Throw an Error, Warning, or Message	err msg wrn
Argument Verification	match_arg
Check Arguments When Supplied	when_not_null when_supplied