Class: Bmg::Summarizer::Count

Inherits:

Bmg::Summarizer

• Object
• Bmg::Summarizer
• Bmg::Summarizer::Count

Defined in:

lib/bmg/summarizer/count.rb

Overview

Count summarizer.

Example:

# direct ruby usage
Bmg::Summarizer.count.summarize(...)

Instance Attribute Summary

Attributes inherited from Bmg::Summarizer

#functor, #options

Instance Method Summary

• #happens(memo, tuple) ⇒ Object

  Counts one more as new memo.

• #least ⇒ Object

  Returns 0 as least value.

Methods inherited from Bmg::Summarizer

avg, by_proc, collect, concat, count, distinct, distinct_count, #finalize, first, #initialize, last, max, median, median_cont, median_disc, min, multiple, percentile, percentile_cont, percentile_disc, stddev, sum, summarization, #summarize, #to_summarizer_name, value_by, variance

Constructor Details

This class inherits a constructor from Bmg::Summarizer

Instance Method Details

#happens(memo, tuple) ⇒ Object

Counts one more as new memo

# File 'lib/bmg/summarizer/count.rb', line 19

def happens(memo, tuple) 
  memo + 1
end

#least ⇒ Object

Returns 0 as least value.

# File 'lib/bmg/summarizer/count.rb', line 14

def least()
  0
end