Re: Re: Programming style: postfix/prefix vs. functional
- To: mathgroup at smc.vnet.net
- Subject: [mg70670] Re: [mg70633] Re: [mg70587] Programming style: postfix/prefix vs. functional
- From: "Chris Chiasson" <chris at chiasson.name>
- Date: Sun, 22 Oct 2006 01:20:39 -0400 (EDT)
- References: <200610200921.FAA11092@smc.vnet.net> <200610210914.FAA29189@smc.vnet.net> <2A8E209D-C4D9-45C1-933B-5E3D955D99C5@mimuw.edu.pl>
Andrzej Kozlowski, Thanks for the wildcard info! So, does @ correspond to Operate? I think Operate is a bit different than @, but I am not sure. On 10/21/06, Andrzej Kozlowski <akoz at mimuw.edu.pl> wrote: > > On 21 Oct 2006, at 18:14, Chris Chiasson wrote: > > > One thing I have wondered is, what function corresponds to the short > > hand "@". I know @ appears in Operate. Also, the ? can sometimes tell > > what function an operator represents (try ?/@ ) , but ?@ only gives > > System`$ (the symbol $ in the context System). > > That's because the symbol @ already has another meaning as a "wild > card": > > @ , one or more characters excluding upper$B!>(Bcase letters > > (A more general wild card is, of course *). So ?@ returns all the > symbols defined in the contexts of the current session that do not > contain capital letters. Evaluate some symbols whose names contain > only small letter in Mathematica and try ?@ again to see this in action. > > Andrzej Kozlowski > > > > > > > > On 10/20/06, Will Robertson <wspr81 at gmail.com> wrote: > >> Hello, > >> > >> As a newcomer to Mathematica, I'm a little unsure on what "good > >> style" > >> would be in this programming language. I notice that several > >> functions > >> have prefix and postfix notations such as //. for ReplaceRepeated, /@ > >> for Map, and so on. > >> > >> Clearly using these forms makes the code more compact, but sacrifices > >> some level of readability. Are there guidelines or suggestions that > >> have built up over the years of whether these are "good" or "bad" to > >> use? > >> > >> If it's simply personal preference, what do you like to use? > >> -- > >> Many thanks, > >> Will Robertson > >> > >> > > > > > > -- > > http://chris.chiasson.name/ > > > > -- http://chris.chiasson.name/
- References:
- Programming style: postfix/prefix vs. functional
- From: "Will Robertson" <wspr81@gmail.com>
- Re: Programming style: postfix/prefix vs. functional
- From: "Chris Chiasson" <chris@chiasson.name>
- Programming style: postfix/prefix vs. functional