On Wednesday, 7 May 2014 at 07:27:42 UTC, Mason McGill wrote:
On Tuesday, 6 May 2014 at 21:00:18 UTC, bearophile wrote:
The language tries its best to be flexible as a dynamic
language. But variables never carry a run-time type tag,
unlike in Lisp.
Hmm... Then how can I do this:
x = 5
typeof(x) # evaluates to "Int64"
x = 5.0
typeof(x) # evaluates to "Float64"
?
Is Julia doing something trickier than I think it is? Or do you
just mean they don't carry type tags after compilation?
Maybe the first x stops existing, and a new one is created on
reassignment?
A more interesting case is this (pseudo code, don't know Julia
syntax):
x = 5
if (...) {
x = "Hello"
}
typeof(x) # ???
Is that disallowed?
