class Sequel::SQL::DelayedEvaluation

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

Attributes

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

Public Class Methods

Source

     # File lib/sequel/sql.rb
1355 def initialize(callable)
1356   @callable = callable
1357   freeze
1358 end

Set the callable object

Public Instance Methods

call (ds)

Source

     # File lib/sequel/sql.rb
1363 def call(ds)
1364   if @callable.respond_to?(:arity) && @callable.arity == 1
1365     @callable.call(ds)
1366   else
1367     @callable.call
1368   end
1369 end

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