This function returns a string representation of the object.
Examples
VI_MODEL$..str..()
#> [1] "<VI_MODEL class>"
# Instantiate
x <- rand_uniform()
e <- rand_normal()
test <- vi_model(prm = list(x = x, e = e),
prm_type = list(x = "r", e = "r"),
formula = y ~ 1 + x + x^2 + e,
null_formula = y ~ x,
alt_formula = y ~ x + I(x^2))
test$..str..()
#> [1] "<VI_MODEL object>\n y = 1 + x + x^2 + e\n - x: <RAND_UNIFORM object>\n [a: 0, b: 1]\n - e: <RAND_NORMAL object>\n [mu: 0, sigma: 1]"