Selector Functions for Character Vectors

A Select function subsets a character vector. They are used by the callback CallbackSetUnfreeze to select parameters to freeze or unfreeze during training.

Usage

select_all()

select_none()

select_grep(pattern, ignore.case = FALSE, perl = FALSE, fixed = FALSE)

select_name(param_names, assert_present = TRUE)

select_invert(select)

Arguments

pattern: See grep()
ignore.case: See grep()
perl: See grep()
fixed: See grep()
param_names: The names of the parameters that you want to select
assert_present: Whether to check that param_names is a subset of the full vector of names
select: A Select

Functions

select_all(): select_all selects all elements
select_none(): select_none selects no elements
select_grep(): select_grep selects elements with names matching a regular expression
select_name(): select_name selects elements with names matching the given names
select_invert(): select_invert selects the elements NOT selected by the given selector

Examples

select_all()(c("a", "b"))
#> [1] "a" "b"
select_none()(c("a", "b"))
#> character(0)
select_grep("b$")(c("ab", "ac"))
#> [1] "ab"
select_name("a")(c("a", "b"))
#> [1] "a"
select_invert(select_all())(c("a", "b"))
#> character(0)