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assertive.properties

A set of predicates and assertions for checking the properties of variables, such as length, names and attributes. Most of the documentation is on the assertive page. End-users will usually want to use assertive directly.

Installation

To install the stable version, type:

install.packages("assertive.properties")

To install the development version, you first need the remotes package.

install.packages("remotes")

Then you can install the assertive.properties package using

library(remotes)
install_bitbucket("richierocks/assertive.properties")

Predicates

has_attributes checks a variable for the presence of named attributes. has_any_attributes and has_no_attributes check for the presence or absence of any attributes at all.

has_dims, has_rows, and has_cols check for the dimensions, rows and columns respectively.

has_duplicates and has_no_duplicates check whether or not a vector has duplicate elements.

has_names, has_dimnames, has_rownames, and has_colnames check for various types of name.

is_atomic, is_recursive, and is_vector check for these types of variables.

is_empty, is_non_empty, is_scalar, and is_non_scalar check for objects of length 0 or 1 (or objects with 0/1 element).

is_of_length, has_elements, and is_of_dimension provide more general variable size checks.

are_same_length and have_same_dims check for two variables having the same length/dimensions.

is_null and is_not_null check whether an object is NULL or not.

is_unsorted checks for unsorted vectors.

Assertions

Predicates that return a vector have two corresponding assertions. For example, has_attributes has assert_has_all_attributes and assert_has_any_attributes.

Predicates returning a single logical value have one corresponding assertion. For example, is_null has assert_is_null.

Utilities

DIM returns the dimension of an object, and works with vectors (like NROW and NCOL).

n_elements returns the number of elements in an object.

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Version

Install

install.packages('assertive.properties')

Monthly Downloads

175

Version

0.0-5

License

GPL (>= 3)

Maintainer

Last Published

April 21st, 2022

Functions in assertive.properties (0.0-5)

assert_has_cols

Does the input have rows/columns?
assert_is_atomic

Is the input atomic/recursive/vector?
DIM

Get the dimensions of an object
assert_has_duplicates

Does the input have duplicates?
n_elements

Get the number of elements
assert_is_not_null

Is the input (not) null?
assert_is_unsorted

Is the input unsorted?
assert_has_dims

Does the input have dimensions?
assert_is_monotonic_increasing

Is the vector monotonically increasing or decreasing?
assert_has_elements

Is the input empty/scalar?
assert_has_all_attributes

Does the input have the specified attributes?
are_same_length

Are the inputs the same length/dimension?
assert_has_colnames

Does the input have names?
assert_has_slot

Does the S4 input have a slot?
has_any_attributes

Does the input have any attributes?