Applies a function to multiple lists or vectors, taking one element from each input list at a time.

Calls a function with a list of arguments.

Applies a function to subsets of a vector or data frame broken down by one or more factors.

Applies a function to the rows or columns of a matrix, or the margins of an array.

Applies a function to each element of a list and returns a list.

Applies a function to each element of a list or vector and simplifies the result into an array, vector, or matrix.

Retrieves the number of columns in an array, matrix, or data frame.

Retrieves the number of rows in an array, matrix, or data frame.

Gets or sets the row names of matrices or data frames.

Gets or sets the column names of matrices or data frames.

Gets or sets the names of objects, such as vectors, lists, or data frames.

Gets or sets the dimensions of arrays (matrices, data frames).

Combines vectors, matrices, or data frames by row.

Combines vectors, matrices, or data frames by column.

Creates an array, a multi-dimensional extension of a matrix.

Creates a list, an ordered collection of objects.

Creates a matrix, a two-dimensional array with rows and columns.

Creates a data frame, a two-dimensional structure for storing data with rows and columns.

Concatenates or combines objects to create a vector or list.

Generates a sequence of integers representing the indices of elements in an object.