class
Importance_2
v2_4_6 - Show latest stable - 0 notes - Superclass: Object

SDBM provides a simple file-based key-value store, which can only store String keys and values.

Note that Ruby comes with the source code for SDBM, while the DBM and GDBM standard libraries rely on external libraries and headers.

Examples

Insert values:

require 'sdbm'

SDBM.open 'my_database' do |db|
  db['apple'] = 'fruit'
  db['pear'] = 'fruit'
  db['carrot'] = 'vegetable'
  db['tomato'] = 'vegetable'
end

Bulk update:

require 'sdbm'

SDBM.open 'my_database' do |db|
  db.update('peach' => 'fruit', 'tomato' => 'fruit')
end

Retrieve values:

require 'sdbm'

SDBM.open 'my_database' do |db|
  db.each do |key, value|
    puts "Key: #{key}, Value: #{value}"
  end
end

Outputs:

Key: apple, Value: fruit
Key: pear, Value: fruit
Key: carrot, Value: vegetable
Key: peach, Value: fruit
Key: tomato, Value: fruit
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