Module: SymbolRespondTo

Defined in:
lib/json2/symbol_respond_to.rb

Overview

Simplify the use of duck typing in case/when structure.

Examples

a = []
b = ~:each
b.call(a) #=> true

# How is this simplification!? Are you kiding me?
# We can use it like this:

case object
when ~:each then

Instance Method Summary collapse

Instance Method Details

#~@ ⇒ Object

Returns Boolean.



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# File 'lib/json2/symbol_respond_to.rb', line 20

def ~@
  ->(object) { object.respond_to?(self) }
end