[isabelle-dev] NEWS: op <infix> -> (<infix>)
lp15 at cam.ac.uk
Tue Jan 16 16:14:23 CET 2018
> On 16 Jan 2018, at 14:13, Blanchette, J.C. <j.c.blanchette at vu.nl> wrote:
> However, for operators like ==>, which bind on the right,
> foo ==>
> is actually much more readable than
> ==> bar
This sort of claim needs to be justified by evidence. We had it the first way until the late 1990s. I changed it to the other way while working on large proof states connected with crypto protocols. It seemed more readable to me for such proofs.
> foo ==> bar
> ==> baz
As for this last example, we definitely need the earlier syntax [|foo; bar|] ==> baz, which has been made almost impossible to enable.
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