Vector dimensions

Description

• vec_empty() returns TRUE if vec_size() is zero.

• vec_dims() gives the dimensionality (i.e. number of dimensions)

• vec_dim() returns the size of each dimension

Usage

vec_empty(x)

vec_dim(x)

vec_dims(x)

Arguments

Details

Unlike base R, we treat vectors with NULL dimensions as 1d. This simplifies the type system by eliding a special case. Compared to base R equivalent, vec_dim() returns length(), not NULL, when x is 1d.

Examples

# Compared to base R
x <- 1:5
dim(x)
vec_dim(x)