Class: Jinx::ValueTransformerHash

Inherits:
Object
  • Object
show all
Includes:
Hashable
Defined in:
lib/jinx/helpers/hashable.rb

Overview

The ValueTransformerHash class pipes the value from a base Hashable into a transformer block.

Instance Method Summary collapse

Methods included from Hashable

#==, #assoc_values, #compact, #compose, #copy_recursive, #detect_key, #detect_key_with_value, #diff, #each_key, #each_pair, #each_value, #enum_keys, #enum_keys_with_value, #enum_values, #filter, #filter_on_key, #filter_on_value, #flatten, #has_key?, #has_value?, #inspect, #join, #keys, #pretty_print, #pretty_print_cycle, #qp, #reject_keys, #reject_values, #select_keys, #select_values, #sort, #split, #to_hash, #to_s, #to_set, #transform_key, #transform_value, #union, #values

Methods included from Enumerable

#collection?, #compact, #compact_map, #detect_value, #detect_with_value, #difference, #empty?, #enumerate, #filter, #first, #flatten, #hashify, #intersect, #join, #last, #partial_sort, #partial_sort_by, #pp_s, #pretty_print, #pretty_print_cycle, #qp, #size, #to_compact_hash, #to_compact_hash_with_index, #to_enum, #to_series, #transform, #transitive_closure, #union

Constructor Details

#initialize(base) {|value| ... } ⇒ ValueTransformerHash

Creates a ValueTransformerHash on the base hash and value transformer block.

Parameters:

  • base (Hash, nil) —

    the hash to transform

Yields:

  • (value) —

    transforms the base value

Yield Parameters:

  • value —

    the base value to transform



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# File 'lib/jinx/helpers/hashable.rb', line 433

def initialize(base, &transformer)
  @base = base
  @xfm = transformer
end

Instance Method Details

#[](key) ⇒ Object

Returns the value at key after this ValueTransformerHash’s transformer block is applied, or nil if this hash does not contain key.

Parameters:

  • key —

    the hash key

Returns:

  • the value at key after this ValueTransformerHash’s transformer block is applied, or nil if this hash does not contain key



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# File 'lib/jinx/helpers/hashable.rb', line 441

def [](key)
  @xfm.call(@base[key]) if @base.has_key?(key)
end

#each {|key, value| ... } ⇒ Object

Yields:

  • (key, value) —

    operate on the key and transformed value

Yield Parameters:

  • key —

    the hash key

  • value —

    the transformed hash value



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# File 'lib/jinx/helpers/hashable.rb', line 448

def each
  @base.each { |k, v| yield(k, @xfm.call(v)) }
end