Package index • chk

Missing Input Checkers Check if the function input is missing or not
`chk_missing()` `vld_missing()`	Check Missing Argument
`chk_not_missing()` `vld_not_missing()`	Check Not Missing Argument
… Checkers Check if the function input comes from … (dot-dot-dot) or not
`chk_used()` `vld_used()`	Check ... Used
`chk_unused()` `vld_unused()`	Check ... Unused
External Data Source Checkers Check if the function input is a valid external data source
`chk_file()` `vld_file()`	Check File Exists
`chk_ext()` `vld_ext()`	Check File Extension
`chk_dir()` `vld_dir()`	Check Directory Exists
NULL Checkers Check if the function input is NULL or not or something else
`chk_null()` `vld_null()`	Check NULL
`chk_not_null()` `vld_not_null()`	Check not NULL
`chk_null_or()`	Check NULL Or
Data Structure Checkers Check if the function input has a specific data structure
`chk_vector()` `vld_vector()`	Check Vector
`chk_atomic()` `vld_atomic()`	Check Atomic
`chk_array()` `vld_array()`	Check Array
`chk_matrix()` `vld_matrix()`	Check Matrix
`chk_list()` `vld_list()`	Check List
`chk_data()` `vld_data()`	Check Data
Data Type Checkers Check if the function input has a data type
`chk_environment()` `vld_environment()`	Check Environment
`chk_logical()` `vld_logical()`	Check Logical
`chk_complex()` `vld_complex()`	Check Complex
`chk_character()` `vld_character()`	Check Character
`chk_numeric()` `vld_numeric()`	Check Numeric
`chk_double()` `vld_double()`	Check Double
`chk_integer()` `vld_integer()`	Check Integer
`chk_raw()` `vld_raw()`	Check Raw
Whole Number Checkers Check if the function input is a whole number, whether explicitly an integer or a double type without fractional parts
`chk_whole_numeric()` `vld_whole_numeric()`	Check Whole Numeric
`chk_whole_number()` `vld_whole_number()`	Check Whole Number
`chk_count()` `vld_count()`	Check Count
Factor Checker Check if the function input is a factor
`chk_factor()` `vld_factor()`	Check Factor
`chk_character_or_factor()` `vld_character_or_factor()`	Check Character or Factor
Scalar Checkers Check if the function input is a vector of length 1
`chk_scalar()` `vld_scalar()`	Check Scalar
`chk_string()` `vld_string()`	Check String
`chk_number()` `vld_number()`	Check Number
`chk_complex_number()` `vld_complex_number()`	Check Complex Number
`chk_flag()` `vld_flag()`	Check Flag
`chk_true()` `vld_true()`	Check TRUE
`chk_false()` `vld_false()`	Check FALSE
Date or DateTime Checkers Check if the function input is of class Date or DateTime
`chk_date()` `vld_date()`	Check Date
`chk_date_time()` `chk_datetime()` `vld_date_time()` `vld_datetime()`	Check Date Time
Time Zone Checker Check if the function input is a Time Zone
`chk_tz()` `vld_tz()`	Check Time Zone
All Elements Checker Check if the function input has a characteristic shared by all its elements
`chk_all()` `vld_all()`	Check All
Function Checker Check if the function input is another function
`chk_function()` `vld_function()`	Check Function
Names Checkers Check if the function input has names and are valid
`chk_named()` `vld_named()`	Check Named
`chk_valid_name()` `vld_valid_name()`	Check Valid Name
Range Checkers Check if the function input is part of a range of values
`chk_range()` `vld_range()`	Checks range of non-missing values
`chk_lt()` `vld_lt()`	Check Less Than
`chk_lte()` `vld_lte()`	Check Less Than or Equal To
`chk_gt()` `vld_gt()`	Check Greater Than
`chk_gte()` `vld_gte()`	Check Greater Than or Equal To
Equal Checkers Check if the function input is equal or similar to a predefined object
`chk_identical()` `vld_identical()`	Check Identical
`chk_equal()` `vld_equal()`	Check Equal
`chk_equivalent()` `vld_equivalent()`	Check Equivalent
`chk_all_identical()` `vld_all_identical()`	Check All Identical
`chk_all_equal()` `vld_all_equal()`	Check All Equal
`chk_all_equivalent()` `vld_all_equivalent()`	Check All Equivalent
Order Checker Check if the function input are numbers in increasing order
`chk_sorted()` `vld_sorted()`	Check Sorted
Set Checkers Check if the function input is composed by certain elements
`vld_not_subset()` `chk_subset()` `vld_subset()`	Check Subset
`chk_not_subset()`	Check Not Subset
`chk_superset()` `vld_superset()`	Check Superset
`vld_orderset()` `chk_setequal()` `vld_setequal()`	Check Set Equal
`chk_orderset()`	Check Set Ordered
Identity Checkers Check if the function input belongs to a class
`chk_is()` `vld_is()`	Check Class
`chk_s3_class()` `vld_s3_class()`	Check Type
`chk_s4_class()` `vld_s4_class()`	Check Inherits from S4 Class
REGEX Checker Check if the function input matches a REGEX
`chk_match()` `vld_match()`	Check Matches
Length Checkers Check if the function input object’s length is a specific value or if because of its length can be strictly recycled
`chk_length()` `vld_length()`	Check Length
`chk_compatible_lengths()` `vld_compatible_lengths()`	Check Compatible Lengths
Quality Checkers (Miscellaneous) Check if the function input meet some user defined quality criteria
`chk_not_any_na()` `vld_not_any_na()`	Check Not Any Missing Values
`chk_not_empty()` `vld_not_empty()`	Check Not Empty
`chk_sorted()` `vld_sorted()`	Check Sorted
`chk_unique()` `vld_unique()`	Check Unique
`chk_join()` `vld_join()`	Check Join
`chkor_vld()`	Chk OR
chk_ Function Extenders Extending chk_ functions
`deparse_backtick_chk()` `backtick_chk()` `unbacktick_chk()`	Deparse Backtick
`message_chk()`	Construct Tidyverse Style Message
`abort_chk()`	Abort Check
`expect_chk_error()`	Expect Chk Error
Message Generators Generating messages
`err()` `wrn()` `msg()`	Stop, Warning and Message Messages
String Manipulators Manipulating strings
`p()` `p0()`	Concatenate Strings
`cc()`	Concatenate with Commas
check_ Functions Checks more properties about the objects
`check_data()`	Check Data
`check_dim()`	Check Dimension
`check_dirs()`	Check Directories Exist
`check_files()`	Check Files Exist
`check_key()`	Check Key
`check_length()`	Check Length
`check_names()`	Check Names
`check_values()`	Check Values and Class
Deprecated Functions Functions that have been deprecated
`chk_chr()` `vld_chr()`	Check Character Scalar
`chk_dbl()` `vld_dbl()`	Check Double Scalar
`chk_lgl()` `vld_lgl()`	Check Logical Scalar
`chk_wnum()` `vld_wnum()`	Check Whole Numeric Scalar
`chkor()`	Check OR

Reference

Missing Input Checkers

… Checkers

External Data Source Checkers

NULL Checkers

Data Structure Checkers

Data Type Checkers

Whole Number Checkers

Factor Checker

Scalar Checkers

Date or DateTime Checkers

Time Zone Checker

All Elements Checker

Function Checker

Names Checkers

Range Checkers

Equal Checkers

Order Checker

Set Checkers

Identity Checkers

REGEX Checker

Length Checkers

Quality Checkers (Miscellaneous)

chk_ Function Extenders

Message Generators

String Manipulators

check_ Functions

Deprecated Functions