On Mon, Mar 11, 2013 at 3:58 PM, Riccardo Ferrazzo <f.riccard...@gmail.com>wrote:
> ** > > Hi there, > > > > There was a misundertand between me and Dalius regarding the +/- button, i > said that the button is unuseful because the - button can be used either as > the minus operator or to identify a negative number. The engine is smart > enough to identify the use based on the position of the operator and the > preceding sign. > > So we don't need that button because just pressing - before a number will > give the same result. (if we want to use negative inputs). > While that might be true I think it is a matter of user expectations. Users generally expect to have a +/- key on their calculator. Most simple office calculators have that.
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