get_meta: Get meta information for one or multiple columns
In a-maldet/readall: Read FWF, DSV, EXCEL And SAS Files

Retrieve all meta information for a single or multiple data columns and store it in a data.frame.

1	get_meta(obj, cols = NULL)

`obj`	A file_structure class object or a file_definition class object or a file_collection class object or a `data.frame` generated by the `read_data()` function (holds the meta information as attribute). The meta information will be extracted from this object.
`cols`	An optional object, defining for which columns the meta information should be retrieved. It can either be a character vector, holding the names of the columns of interest, or it can be numeric vector holding the indices of the columns of interest. If `cols` is omitted, then all columns are used.