[Bioc-devel] Collapsing a GRangesList into a GRanges without loosing names(GRangesList)

[Bhagwat, Aditya]

Dear bioc-devel,

When using unlist to collapse a GRangesList into a GRanges<https://support.bioconductor.org/p/83599>  one looses names(GRangesList).
Since I need a name-preserving collapser, I defined the following in multicrispr<https://gitlab.gwdg.de/loosolab/software/multicrispr>.
My feedback request is: did I overlook existing similar functionality?

#' Collapse a GRangesList
#' @param grangeslist GenomicRanges::GRangesList
#' @examples
#' # Consider a GRangesList
#'     grlist <- GenomicRanges::GRangesList(
#'         gr1 = GenomicRanges::GRanges('chr1', '1-100',   strand = '-'),
#'         gr2 = GenomicRanges::GRanges('chr1', '101-200', strand = '-'))
#'
#' # unlist() drops names(grlist)
#'     unlist(grlist)
#'
#' # collapse() preserves them
#'     collapse(grlist)
#'
#' # in a way similar to as.data.frame()
#'     as.data.frame(grlist)
#' @export
collapse <- function(grangeslist){
    add_series <- function(granges, group_name){
                    granges$group_name <- group_name;
                    granges }
    S4Vectors::mendoapply(add_series, grangeslist, names(grangeslist)) %>%
    unlist() %>%
    sort()
}


Aditya

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