decr(key, amount = 1) — MemCache — Ruby on Rails 2.3.18

decr(key, amount = 1)

Decrements the value for key by amount and returns the new value. key must already exist. If key is not an integer, it is assumed to be

key can not be decremented below 0.

Parameters

key req
amount opt = 1

Source

# File activesupport/lib/active_support/vendor/memcache-client-1.7.4/memcache.rb, line 193
  def decr(key, amount = 1)
    raise MemCacheError, "Update of readonly cache" if @readonly
    with_server(key) do |server, cache_key|
      cache_decr server, cache_key, amount
    end
  rescue TypeError => err
    handle_error nil, err
  end

Defined in activesupport/lib/active_support/vendor/memcache-client-1.7.4/memcache.rb line 193 · View on GitHub · Improve this page · Find usages on GitHub

Defined in MemCache

Signature

Parameters