class Sequel::SQL::DelayedEvaluation

Represents a delayed evaluation, encapsulating a callable object which returns the value to use when called.

Attributes

callable[R]

A callable object that returns the value of the evaluation when called.

Public Class Methods

new(callable) click to toggle source

Set the callable object

# File lib/sequel/sql.rb, line 1219
def initialize(callable)
  @callable = callable
end

Public Instance Methods

call(ds) click to toggle source

Call the underlying callable and return the result. If the underlying callable only accepts a single argument, call it with the given dataset.

# File lib/sequel/sql.rb, line 1226
def call(ds)
  if @callable.respond_to?(:arity) && @callable.arity == 1
    @callable.call(ds)
  else
    @callable.call
  end
end