Module: Modernize::MapMethods

Defined in:
lib/modernizer/map_methods.rb

Class Method Summary collapse

Class Method Details

.add(struct, field, block) ⇒ Object

Adds a field based on the result of the block if the field doesn’t already exist.



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# File 'lib/modernizer/map_methods.rb', line 7

def add(struct, field, block)
  h = struct.hash
  h[field] = struct.instance_exec(&block) if h[field].nil?
end

.compute(struct, field, block) ⇒ Object

Adds or updates a field passing the current value (if any) as a parameter to the block.



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# File 'lib/modernizer/map_methods.rb', line 29

def compute(struct, field, block)
  h = struct.hash
  h[field] = struct.instance_exec(h[field], &block)
end

.map(struct, field, block) ⇒ Object

Maps an existing field passing the current value as a parameter to the block.



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# File 'lib/modernizer/map_methods.rb', line 21

def map(struct, field, block)
  h = struct.hash
  h[field] = struct.instance_exec(h[field], &block) unless h[field].nil?
end

.remove(struct, field, block) ⇒ Object

Removes a field.



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# File 'lib/modernizer/map_methods.rb', line 14

def remove(struct, field, block)
  struct.hash.delete(field)
end