Description:
Used to accumulate values by category. It might be useful for example in a billing program to accumulate hours by various categories. It could be used to count how many times various words occurred in a document. All you need is: buckets.accumulate( "somecategory", someamount ); And Accumulate looks after creating the buckets to accumulate new categories for you.
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Keywords:
accumulate, buckets, histogram, count, categories