Class: J8::Function

Inherits:
Object show all
Includes:
Common
Defined in:
lib/j8/function.rb

Class Method Summary collapse

Instance Method Summary collapse

Methods included from Common

callable_from_proc, from_callable, from_callable_class, initialize, lambda?, make_lambda, raise_unless_lambda

Class Method Details

.identity ⇒ Object 



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# File 'lib/j8/function.rb', line 23

def self.identity
  J8::Function.new { |o| o }
end

Instance Method Details

#apply(o) ⇒ Object 



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# File 'lib/j8/function.rb', line 7

def apply(o)
  @callable.call(o)
end

#compose(before = nil, &block) ⇒ Object 



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# File 'lib/j8/function.rb', line 11

def compose(before = nil, &block)
  callable = from_callable(before, block)

  J8::Function.new(->(o) { apply(callable.apply(o)) })
end

#then(after = nil, &block) ⇒ Object 



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# File 'lib/j8/function.rb', line 17

def then(after = nil, &block)
  callable = from_callable(after, block)

  J8::Function.new(->(o) { callable.apply(apply(o)) })
end