I'm not sure if you are still interested in details or not.
Assuming you ask the question "why" it works differently, one of the
short answers, assuming some basic background knowledge on your part
about compilers and programming language implementation details:
similar, but different concepts->different restrictions->different
rules->different implementations.
You might want to take a look at the different precision requirements
in the spec for both constants and variables.
You maybe also want to think about the costs and benefits to having
the compiler and the compiled code work this way or if you are really
curious, think about how the same rules with the same semantics could
be implemented for both constants and variables,
I'm not sure, but iirc there was some discussion pre 1.0 about some of
the aspects of constants, you might want to take a look at the mailing
list archives.
Another short answer: the expressions just look similar, these aren't the same.
(+1: if you quote code, please use links to the playground or
alternatively just no html in emails.)
On 5/21/19, djad...@gmail.com wrote:
>
> Thanks all for comments,
>
> for me confusion is that
> int( some_float_var)
>
> works, and surprisingly
> int( some_float_constant)
>
> does not.
>
>
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