class Crysda::StringPool

• Crysda::StringPool
• Reference
• Object

Overview

=========================================================================== String Pool for String Interning (Dictionary Encoding) Reduces memory for categorical columns with repeated values

Defined in:

crysda/columns.cr

Constructors

• .new(initial_capacity : Int32 = 64)

Instance Method Summary

• #beneficial?(total_strings : Int32) : Bool

  Check if interning would be beneficial (high repetition ratio)

• #clear
• #hit_ratio : Float64

  Statistics

• #intern(str : String) : String

  Intern a string - returns the canonical instance

• #intern(str : String | Nil) : String | Nil

  Intern a nullable string

• #size : Int32

  Number of unique strings in pool

Constructor Detail

Instance Method Detail