match_file.RdReturn a list of files given a full prefix and optional suffix. Optionally, confirm that the right number of files are returned. If the wrong number of files is returned, throw an error.
match_file(path_prefix, suffix = NULL, expect = NULL)
| path_prefix | Full path and file prefix |
|---|---|
| suffix | File suffix, as character (default = `NULL`) |
| expect | Number of files expected to be returned (default = `NULL`) |
Character vector of matched file names, as full paths.
If `path_prefix` points to a directory, then all files inside that directory that match the suffix (if provided) are returned.