Re: ReplaceRepeated info
- To: mathgroup at smc.vnet.net
- Subject: [mg77744] Re: ReplaceRepeated info
- From: dh <dh at metrohm.ch>
- Date: Fri, 15 Jun 2007 06:21:45 -0400 (EDT)
- References: <f4r573$ber$1@smc.vnet.net>
Hi Alessandro, simply put a counter variable in, like: i=0; Log[d p q r] Log[a b c d]//.Log[x_ y_]:>(++i;Log[x]+Log[y]) i hope this helps, Daniel alexxx.magni at gmail.com wrote: > Hi everybody, > I need to use in my program ReplaceRepeated, and also to know, after > it has been applied, how many times a replacement happened. Say, after > this: > > Log[d p q r] Log[a b c d]//.Log[x_ y_] ->Log[x] + Log[y] > > (Log[a] + Log[b] + Log[c] + Log[d]) (Log[d] + Log[p] + Log[q] + > Log[r]) > > > ... I'd need to know that it performed 6 substitutions. > There is a way with //. , or have I to resort to some loop around /. , > checking myself when no change happens anymore? > > > Thank you! > > Alessandro Magni > >