Class: Object

Inherits:
BasicObject
Defined in:
lib/volt/extra_core/blank.rb,
lib/volt/extra_core/object.rb,
lib/volt/extra_core/stringify_keys.rb

Instance Method Summary collapse

Instance Method Details

#blank? ⇒ Boolean

An object is blank if it’s false, empty, or a whitespace string. For example, ”, ‘ ’, nil, [], and {} are all blank.

This simplifies:

if address.nil? || address.empty?

…to:

if address.blank?

Returns:



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# File 'lib/volt/extra_core/blank.rb', line 12

def blank?
  respond_to?(:empty?) ? empty? : !self
end

#deep_clone ⇒ Object

TODO: Need a real implementation of this



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# File 'lib/volt/extra_core/object.rb', line 16

def deep_clone
  if RUBY_PLATFORM == 'opal'
    Volt::EJSON.parse(Volt::EJSON.stringify(self))
  else
    Marshal.load(Marshal.dump(self))
  end
end

#html_inspect ⇒ Object 



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# File 'lib/volt/extra_core/object.rb', line 11

def html_inspect
  inspect.gsub('<', '&lt;').gsub('>', '&gt;')
end

#instance_values ⇒ Object

Setup a default pretty_inspect alias_method :pretty_inspect, :inspect



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# File 'lib/volt/extra_core/object.rb', line 7

def instance_values
  Hash[instance_variables.map { |name| [name[1..-1], instance_variable_get(name)] }]
end

#present? ⇒ Boolean

An object is present if it’s not blank?.

Returns:



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# File 'lib/volt/extra_core/blank.rb', line 17

def present?
  !blank?
end

#stringify_keys ⇒ Object 



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# File 'lib/volt/extra_core/stringify_keys.rb', line 2

def stringify_keys
  each_with_object({}) do |(key, value), hash|
    hash[key.to_s] = value
  end
end

#symbolize_keys ⇒ Object 



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# File 'lib/volt/extra_core/stringify_keys.rb', line 8

def symbolize_keys
  each_with_object({}) do |(key, value), hash|
    hash[key.to_sym] = value
  end
end

#then(&block) ⇒ Object

Convert a non-promise value into a resolved promise. Resolve the block if it takes one.



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# File 'lib/volt/extra_core/object.rb', line 26

def then(&block)
  promisify_and_run_method(:then, &block)
end

#try(*a, &b) ⇒ Object

def fail(&block)

promisify_and_run_method(:fail, &block)

end



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# File 'lib/volt/extra_core/object.rb', line 34

def try(*a, &b)
  if a.empty? && block_given?
    yield self
  else
    public_send(*a, &b) if respond_to?(a.first)
  end
end