struct Crysda::HashBuilder

• Crysda::HashBuilder
• Struct
• Value
• Object

Overview

Custom Hashing helper. This provides a calculated hash of contents which is consistent on each and every run. This doesn't conflict with and/or override Crystal Hashing functionality which is used for object equality checks. Hash value generated by this builder is only used for internal grouping purposes to ensure the consistency on each and every run/invocation. Refer to CustomColumnValue for more details and usage purposes.

Defined in:

crysda/utils.cr

Constant Summary

HASH_NULL = Int64::MAX - 123000

Constructors

• .new

Class Method Summary

• .combine(h1 : Int64, h2 : Int64) : Int64

  Combine multiple hash values

• .hash_f64(val : Float64 | Nil, seed : Int64 = 17_i64) : Int64

  Hash a single Float64 value (or null) - fast path using bit representation

• .hash_i32(val : Int32 | Nil, seed : Int64 = 17_i64) : Int64

  Hash a single Int32 value (or null)

• .hash_i64(val : Int64 | Nil, seed : Int64 = 17_i64) : Int64

  Hash a single Int64 value (or null)

• .hash_str(val : String | Nil, seed : Int64 = 17_i64) : Int64

  Hash a single String value (or null)

Instance Method Summary

• #add(val : Bool)
• #add(val : Char)
• #add(val : String)
• #add(val : AnyVal)
• #add(val : Nil)
• #add(val : Iterable)
• #add(value : Float32)
• #add(value : Float64)
• #add(value : Float)
• #add(val : Int)
• #add(val : UUID)
• #add(val : CustomColumnValue)
• #add(val)
• #hashcode(val)
• #hashcode : Int64

Constructor Detail

Class Method Detail

Instance Method Detail