Re: can't find info about & /@ %
- To: mathgroup at smc.vnet.net
- Subject: [mg121910] Re: can't find info about & /@ %
- From: Simon <simonjtyler at gmail.com>
- Date: Thu, 6 Oct 2011 04:23:54 -0400 (EDT)
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- References: <j6h31i$6un$1@smc.vnet.net>
- Reply-to: comp.soft-sys.math.mathematica at googlegroups.com
All of these can be found in the Syntax guide page: http://reference.wolfram.com/mathematica/guide/Syntax.html But in particular, the & makes the preceding code, Options[#, "ColorSpace"]&, a pure fucntion: http://reference.wolfram.com/mathematica/ref/Function.html The /@ is short for Map (http://reference.wolfram.com/mathematica/ref/Map.html) and the % means the last output, and is short for Out[] (%n means Out[n]). So what you're doing is mapping the Options[#,"ColorSpace"]& function over the previous output, which hopefully is a list (or some container) of expressions that possess that option.