class SieveCache::Cache(K, V)

• SieveCache::Cache(K, V)
• Reference
• Object

Included Modules

• SieveCache::CacheBase(K, V)

Defined in:

Constructors

• .new(cap : UInt32)

  Initialize cache with given capacity

Instance Method Summary

• #clear

  Clear cache

• #del(key : K, &)

  Delete value by key, call the block if key is not found

• #get(key : K, &)

  Get value by key, call the block if key is not found

• #get_or_set(key : K, & : K -> V) : V

  Get value by key, call the block to get value to set into cache if key is not found

• #has?(key : K) : Bool

  Check cache if has key?

• #set(key : K, value : V)

  Set key-value to cache

• #to_s

  to string

Constructor Detail

cache = Cache(String, String).new(10)

Instance Method Detail

cache.clear
p! cache.len # => 0

deleted_value = cache.del("foo") { nil }

value = cache.get("foo") { |k| raise "Key: #{k} not found" }

value = cache.get_or_set("foo") { |k| "new value of key: #{k}" }
p! value        # => "new value of key: foo"
p! cache["foo"] # => "new value of key: foo"

if cache.has?("hello")
  ...
end

cache.set("foo", "bar")
cache.set("foo", "baz")

cache = Cache(String, String).new(10)
pp! cache.to_s