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How to make an action only one time ?

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Subject: How to make an action only one time ?
From: Fabrice Vinatier (fabrice.vinatier@cirad.fr)
Date: Mon Jun 30 2008 - 17:10:53 CEST

Hello,
I am looking for a way to make an action only one time, although the
condition is still valid for the next time steps.
I send the code :

(self thePlants select: [:a | a growingState = #harvesting]) size > 0
                ifTrue:
                    [self saveAttackDistributions.
                    self savePopDistributions]

AttackDistributions and PopDistributions are saved in a file .txt, but
if there is 10 time steps after harvesting, for example, the saving will
be done ten times.

If you have an idea of how to prevent this ?
Cheers, 

-- 
Fabrice Vinatier
Modélisation / Entomologie

CIRAD - PRAM
Unité de recherche Systèmes de culture bananes, plantains et ananas

Téléphone : 05 96 42 30 58

!! Nouvelle adresse email !!   fabrice.vinatier@cirad.fr

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