Module types 

Type-checking builtins: is.null, is.na, is.numeric, etc.

Each function tests whether an R value belongs to a particular type or satisfies a type predicate, returning a logical scalar or vector.

Statics

__BUILTIN_REG_BUILTIN_IS_ARRAY 🔒

__BUILTIN_REG_BUILTIN_IS_ATOMIC 🔒

__BUILTIN_REG_BUILTIN_IS_CALL 🔒

__BUILTIN_REG_BUILTIN_IS_CHARACTER 🔒

__BUILTIN_REG_BUILTIN_IS_DATA_FRAME 🔒

__BUILTIN_REG_BUILTIN_IS_DOUBLE 🔒

__BUILTIN_REG_BUILTIN_IS_ELEMENT 🔒

__BUILTIN_REG_BUILTIN_IS_ENVIRONMENT 🔒

__BUILTIN_REG_BUILTIN_IS_EXPRESSION 🔒

__BUILTIN_REG_BUILTIN_IS_FACTOR 🔒

__BUILTIN_REG_BUILTIN_IS_FALSE 🔒

__BUILTIN_REG_BUILTIN_IS_FINITE 🔒

__BUILTIN_REG_BUILTIN_IS_FUNCTION 🔒

__BUILTIN_REG_BUILTIN_IS_INFINITE 🔒

__BUILTIN_REG_BUILTIN_IS_INTEGER 🔒

__BUILTIN_REG_BUILTIN_IS_LANGUAGE 🔒

__BUILTIN_REG_BUILTIN_IS_LIST 🔒

__BUILTIN_REG_BUILTIN_IS_LOGICAL 🔒

__BUILTIN_REG_BUILTIN_IS_MATRIX 🔒

__BUILTIN_REG_BUILTIN_IS_NA 🔒

__BUILTIN_REG_BUILTIN_IS_NAN 🔒

__BUILTIN_REG_BUILTIN_IS_NULL 🔒

__BUILTIN_REG_BUILTIN_IS_NUMERIC 🔒

__BUILTIN_REG_BUILTIN_IS_ORDERED 🔒

__BUILTIN_REG_BUILTIN_IS_PAIRLIST 🔒

__BUILTIN_REG_BUILTIN_IS_PRIMITIVE 🔒

__BUILTIN_REG_BUILTIN_IS_RECURSIVE 🔒

__BUILTIN_REG_BUILTIN_IS_SYMBOL 🔒

__BUILTIN_REG_BUILTIN_IS_TRUE 🔒

__BUILTIN_REG_BUILTIN_IS_VECTOR 🔒

Functions

builtin_is_array 🔒

Test if an object is an array.

builtin_is_atomic 🔒

Test if an object is atomic (vector or NULL).

builtin_is_call 🔒

Test if an object is a call (language object).

builtin_is_character 🔒

Test if an object is a character vector.

builtin_is_data_frame 🔒

Test if an object is a data frame.

builtin_is_double 🔒

Test if an object is a double (real-valued) vector.

builtin_is_element 🔒

Test set membership: is each element of el in table?

builtin_is_environment 🔒

Test if an object is an environment.

builtin_is_expression 🔒

Test if an object is an expression object.

builtin_is_factor 🔒

Test if an object is a factor.

builtin_is_false 🔒

Test if x is a single FALSE value.

builtin_is_finite 🔒

Test which elements are finite (not Inf, -Inf, NaN, or NA).

builtin_is_function 🔒

Test if an object is a function (closure or builtin).

builtin_is_infinite 🔒

Test which elements are infinite (Inf or -Inf).

builtin_is_integer 🔒

Test if an object is an integer vector.

builtin_is_language 🔒

Test if an object is a language object (unevaluated expression).

builtin_is_list 🔒

Test if an object is a list.

builtin_is_logical 🔒

Test if an object is a logical vector.

builtin_is_matrix 🔒

Test if an object is a matrix (has dim attribute of length 2).

builtin_is_na 🔒

Test which elements are NA (missing values).

builtin_is_nan 🔒

Test which elements are NaN (not-a-number).

builtin_is_null 🔒

Test if an object is NULL.

builtin_is_numeric 🔒

Test if an object is numeric (integer or double).

builtin_is_ordered 🔒

Test if an object is an ordered factor.

builtin_is_pairlist 🔒

Test if an object is a pairlist.

builtin_is_primitive 🔒

Test if an object is a primitive (builtin) function.

builtin_is_recursive 🔒

Test if an object is recursive (list, environment, or call/language object).

builtin_is_symbol 🔒

Test if an object is a symbol (name).

builtin_is_true 🔒

Test if x is a single TRUE value.

builtin_is_vector 🔒

Test if an object is a vector with no attributes other than names.