ruby - Delete hash item from within select -

is there way delete hash item within select? want check if file exists in directory , if does, remove hash.

hash = {"http://s3-us-west-2.amazonaws.com/packages/ics/ics_4.0.0.tar.gz"=>"5103909285b549eda0b6a13dd503790a", ...}  hash.select |k,v|   if file.file?("#{k[/[^\/]+$/]}")     # remove hash    end end 

you cannot delete element in select, delete_if choice.

hash.delete_if { |k,_| file.file?("#{k[/[^\/]+$/]}") } 

update:

hash_copy = hash.dup  hash.select |k,v|   if file.file?("#{k[/[^\/]+$/]}")     hash_copy.delete(k)     ......   end end