base (version 3.0.3)

typeof: The Type of an Object

Description

typeof determines the (R internal) type or storage mode of any object

Usage

typeof(x)

Arguments

x

any R object.

Value

A character string. The possible values are listed in the structure TypeTable in ‘src/main/util.c’. Current values are the vector types "logical", "integer", "double", "complex", "character", "raw" and "list", "NULL", "closure" (function), "special" and "builtin" (basic functions and operators), "environment", "S4" (some S4 objects) and others that are unlikely to be seen at user level ("symbol", "pairlist", "promise", "language", "char", "...", "any", "expression", "externalptr", "bytecode" and "weakref").

See Also

mode, storage.mode.

isS4 to determine if an object has an S4 class.

Examples

typeof(2)
mode(2)