Class: Object
- Inherits:
- BasicObject
- Defined in:
- lib/skn_utils/core_extensions.rb
Instance Method Summary collapse
-
#blank? ⇒ true, false
An object is blank if it’s false, empty, or a whitespace string.
- #deep_dup ⇒ Object
- #duplicable? ⇒ Boolean
-
#presence ⇒ Object
Returns the receiver if it’s present otherwise returns
nil
. -
#present? ⇒ true, false
An object is present if it’s not blank.
Instance Method Details
#blank? ⇒ true, false
An object is blank if it’s false, empty, or a whitespace string. For example, ”, ‘ ’, nil
, [], and {} are all blank.
This simplifies
address.nil? || address.empty?
to
address.blank?
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# File 'lib/skn_utils/core_extensions.rb', line 27 def blank? respond_to?(:empty?) ? !!empty? : !self end |
#deep_dup ⇒ Object
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# File 'lib/skn_utils/core_extensions.rb', line 62 def deep_dup duplicable? ? dup : self end |
#duplicable? ⇒ Boolean
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# File 'lib/skn_utils/core_extensions.rb', line 58 def duplicable? true end |
#presence ⇒ Object
Returns the receiver if it’s present otherwise returns nil
. object.presence
is equivalent to
object.present? ? object : nil
For example, something like
state = params[:state] if params[:state].present?
country = params[:country] if params[:country].present?
region = state || country || 'US'
becomes
region = params[:state].presence || params[:country].presence || 'US'
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# File 'lib/skn_utils/core_extensions.rb', line 54 def presence self if present? end |
#present? ⇒ true, false
An object is present if it’s not blank.
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# File 'lib/skn_utils/core_extensions.rb', line 34 def present? !blank? end |