Class: Hash

Inherits:
Object
  • Object
show all
Defined in:
lib/flazm_ruby_helpers/data_structures.rb

Overview

Ruby hash extensions

Instance Method Summary collapse

Instance Method Details

#deep_merge(second) ⇒ Object

rubocop:disable Style/ClassAndModuleChildren



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# File 'lib/flazm_ruby_helpers/data_structures.rb', line 31

def deep_merge(second)
  merger = proc { |_key, v1, v2| Hash === v1 && Hash === v2 ? v1.merge(v2, &merger) : v2 } # rubocop:disable Style/CaseEquality, Metrics/LineLength
  merge(second, &merger)
end

#flatten_paths(path_prefix = '') ⇒ Object 



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# File 'lib/flazm_ruby_helpers/data_structures.rb', line 59

def flatten_paths(path_prefix = '')
  result = {}
  map do |key, value|
    if value.is_a?(Hash)
      result.merge!(value.flatten_paths("#{path_prefix}/#{key}"))
    else
      result.merge!("#{path_prefix}/#{key}" => value)
    end
  end
  result
end

#leaf_node? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/flazm_ruby_helpers/data_structures.rb', line 52

def leaf_node?
  map do |_key, value|
    return false if value.is_a?(Hash) || value.is_a?(Array)
  end
  true
end

#to_yaml_inline(pad_left_indents: 0, indent_size: 2) ⇒ Object 



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# File 'lib/flazm_ruby_helpers/data_structures.rb', line 71

def to_yaml_inline(pad_left_indents: 0, indent_size: 2)
  indent_string = ' ' * indent_size
  pad_indent = indent_string * pad_left_indents
  result = JSON.parse(to_json).to_yaml(indentation: indent_size, line_width: -1).to_str.lines.to_a[1..-1].map \
             { |line| pad_indent + line }
  result.join
end

#walk_keys(kproc) ⇒ Object 



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# File 'lib/flazm_ruby_helpers/data_structures.rb', line 42

def walk_keys(kproc)
  map do |key, value|
    if value.is_a?(Hash) || value.is_a?(Array)
      { kproc.call(key) => value.walk_keys(kproc) }
    else
      { kproc.call(key) => value }
    end
  end.reduce({}, :merge)
end

#walk_values(vproc) ⇒ Object 



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# File 'lib/flazm_ruby_helpers/data_structures.rb', line 36

def walk_values(vproc)
  map do |key, value|
    value.is_a?(Hash) || value.is_a?(Array) ? { key => value.walk_values(vproc) } : { key => vproc.call(value) }
  end.reduce({}, :merge)
end