Accumulators

At each step of an iteration, resulting data can be memorized and stored with the OMLoop accumulators . Accumulators execute storage or other operation upon the elements they are returned successively.

There are six accumulators :

• : Collect gathers the result of each step of a loop into a list.

• : Sum returns the sum of the collected elements.

• : Min and max return the lowest and highest value among a set of collected elements.

• : Counter counts the number of non-nil collected elements.

• : Acum allows to define specific accumulation procedures.

• All accumulators but acum have a single input : this input is used for collecting the successive values during a loop.

• All accumulator have three outputs, allowing to access their current "memory"  :

  • first output : executes a specific operation with each new collected element.
  • second output : returns the current stat e of the accumulator's memory,
  • third output : reinitializes the memory.