get functions in the environment by their class. Useful to find e.g. all regression models you've stored in interactive programming. — ls_by_class • formr

get functions in the environment by their class. Useful to find e.g. all regression models you've stored in interactive programming.

Usage

ls_by_class(classes, envir = parent.frame(), top_class_only = FALSE, ...)

Arguments

classes: objects should have one of these classes
envir: defaults to looking in the calling environment of this function, passed to ls
top_class_only: defaults to FALSE. If false, also returns objects inheriting from one of the specified classes.
...: passed to ls

Examples

data(ChickWeight)
chickweight.m1 <- glm(weight ~ Time + Diet, family = gaussian, data = ChickWeight)
ls_by_class('lm')
#> NULL
c('chickweight.m1') %in% ls_by_class('lm')
#> [1] FALSE
c('chickweight.m1') %in% ls_by_class('lm', top_class_only = TRUE)
#> [1] FALSE