Class: Mapper

Inherits:
Array
  • Object
show all
Defined in:
lib/mapper.rb,
lib/mapper/all.rb,
lib/mapper/some.rb

Overview

Represents mapped objects holder.

Defined Under Namespace

Classes: All, Some

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(*objs) ⇒ Mapper

Constructor.

If only one argument, and it’s Array, content will be treaten as matter for mapping.



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# File 'lib/mapper.rb', line 43

def initialize(*objs)
    if (objs.length == 1) and (objs.first.kind_of? Array)
        self.merge! objs.first
    else
        self.merge! objs
    end
end

Class Method Details

.[](*args) ⇒ Object

Alias for #new.

See Also:

  • {{#initialize}


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# File 'lib/mapper.rb', line 32

def self.[](*args)
    self::new(*args)
end

Instance Method Details

#all ⇒ Object

Produces reductor which passes call with given arguments to each object.



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# File 'lib/mapper.rb', line 56

def all
    if @all.nil?
        @all = All::new(self)
    end
    
    return @all
end

#some(&block) ⇒ Object

Produces reductor which passes call with given arguments to each object from oldest to newest in aggregator if the output of given block isn’t true.



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# File 'lib/mapper.rb', line 70

def some(&block)

    # Returns from cache
    if not @some.nil? and block.nil?
        return @some
    end

    # In otherwise, creates new
    default = false
    
    if block.nil?
        block = Proc::new { |v| v.to_b }
        default = true
    end

    some = Some::new(self, &block)
    
    if (default == true) and @some.nil?
        @some = some
    end
    
    return some
end