Method Gdbm.DB()->nextkey()

Method nextkey

string(8bit) nextkey(string(8bit) key)

Description

This returns the key in database that follows the key 'key' key. This is of course used to iterate over all keys in the database.

Note

Changing (adding or removing keys) the database while iterating can cause keys to be skipped.

The database also works as an Iterator, and can be used as the first argument to foreach.

Example

// Write the contents of the database
 for(key=gdbm->firstkey(); k; k=gdbm->nextkey(k))
   write(k+":"+gdbm->fetch(k)+"\n");
Or, using foreach
// Write the contents of the database
foreach( db; string key; string value )
   write(key+":"+value+"\n");