Module: Pipeline

Defined in:
lib/pipeline.rb

Overview

The Pipeline Refinement module bundles a method duo that builds a clean and clever pure-Ruby solution to rightward method piping. Check out the README for examples.

Reminder: activate a Refinement module with using:

using Pipeline
my_obj.then_pipe(…)

Refinements are only active for the module/class block or file (if top-level) that’s using them. See: refinements.rdoc (on docs.ruby-lang.org)

Instance Method Summary collapse

Instance Method Details

#`(name) ⇒ Object

Alias Object#method.

m = 42.` :to_s
m.call #=> "42"

The ` method is the backend to the `…` and %x{…} syntaxes.

class MyArray < Array
  using Pipeline
  def fetch_values(*indices)
    indices.map(&`[]`)
  end
end
a = MyArray.new(['A', 'B', 'C'])
a.fetch_values 1, 3 #=> ["B", nil]

See Also:



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# File 'lib/pipeline.rb', line 49

module Pipeline; refine Object do
  def then_pipe(*procs) = procs.reduce(self) { _1.then(&_2) }
  
  alias sys `
  alias ` method
end end

#sys(command) ⇒ Object

Provide a replacement alias for Kernel#`, the subshell method.

See Also:



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# File 'lib/pipeline.rb', line 49

module Pipeline; refine Object do
  def then_pipe(*procs) = procs.reduce(self) { _1.then(&_2) }
  
  alias sys `
  alias ` method
end end

#then_pipe(*procs) ⇒ Object

Yield self to the first Proc (or #to_proc object) argument, then the result to the second argument, and so forth.

construct_url(arguments).then_pipe(
  proc {|url| URI(url).read },
  JSON.public_method :parse
)

Parameters:

  • procs —

    Proc or #to_proc objects to call

Returns:

  • The result of the last call, or self if no arguments were given.



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# File 'lib/pipeline.rb', line 49

module Pipeline; refine Object do
  def then_pipe(*procs) = procs.reduce(self) { _1.then(&_2) }
  
  alias sys `
  alias ` method
end end