public static IFilter <FileSystemEntry> Matches(FileDialogFilter?filter)
{
if (filter == null || filter.Extensions.Contains("*"))
{
return(True <FileSystemEntry>());
}
return(StorageFuncFilter.New(filter, MatchesFilter));
}
public static IFilter <string> Contains(char c) => StorageFuncFilter.New(c, ContainsChar);