library(keras)
gradients <- list("grad_for_wt_1", "grad_for_wt_2", "grad_for_wt_3")
weights <- list("weight_1", "weight_2", "weight_3")
str(zip_lists(gradients, weights))
str(zip_lists(gradient = gradients, weight = weights))
names(gradients) <- names(weights) <- paste0("layer_", 1:3)
str(zip_lists(gradients, weights[c(3, 1, 2)]))
names(gradients) <- paste0("gradient_", 1:3)
try(zip_lists(gradients, weights)) # error, names don't match
# call unname directly for positional matching
zip_lists(unname(gradients), unname(weights)) zip_lists
zip lists
Description
This is conceptually similar to zip() in Python, or R functions purrr::transpose() and data.table::transpose() (albeit, accepting elements in ... instead of a single list), with one crucial difference: if the provided objects are named, then matching is done by names, not positions.
Usage
zip_lists(...) Arguments
| Arguments | Description |
|---|---|
| … | R lists or atomic vectors, optionally named. |
Details
All arguments supplied must be of the same length. If positional matching is required, then all arguments provided must be unnamed. If matching by names, then all arguments must have the same set of names, but they can be in different orders.
Value
A inverted list