take: Extract n steps from a generator
In michaelquinn32/generators: Generators: Iterable functions

.simplify uses unlist and reduces lists to vectors in a similar fashion.

1	take(.generator, .n, .simplify)

`.generator`	A function with the class `generator`
`.n`	The number of steps to take
`.simplify`	If `TRUE`, let the function try to simplify the output instead of returning a list

# Simplifying to a vector
counter <- generator(0, ~ state + 1)
take(counter, 5)

# Simplifying to a matrix
ran <- generator(c(0, 0), ~ rnorm(2))
take(ran, 5)

# Returning a list
take(ran, 5, FALSE)