2.3 Accumulators

loops can also be used in expression position to accumulate values. The value of the implicit accumulator is returned when the loop terminates.

<<collect E>>

adds element E at the end of the list being collected. Can be used together will append

<<append L>>

appends L at the end of the list being collected. Can be used together with collect

<<count B>>

if B is true, adds 1 to the accumulated counter. Can be used together with sum

<<sum E>>

adds E to the accumulated counter. Can be used together with count

<<maximize E>>

replaces the current accumulated value if E is greater

<<minimize E>>

replaces the current accumulated value if E is smaller


Denys Duchier
Version 1.4.0 (20100209)