Hey Mark, don't get paranoid :)... this is all Cedric did!
user=> (def .3 0.4)
#'user/.3
user=> (+ .3 1.7)
2.1
Jim
On 09/04/13 10:46, Mark Engelberg wrote:
What version are you running?
As far as I know, .3 isn't even a valid representation for a number --
you'd have to write it as 0.3. So I'm not sure where you're running
that code snippet such that you don't get an immediate error.
On 1.5.1:
=> (+ 0.3 1.7)
2.0
That said, I think most programmers know that floating point
representations of numbers are inexact. That's why, if you care about
exactness, you should write:
=> (+ 0.3M 1.7M)
2.0M
On Tue, Apr 9, 2013 at 1:53 AM, Cedric Greevey <[email protected]
<mailto:[email protected]>> wrote:
This may look mildly surprising, and suggests one more thing *not*
to ever do in production code:
user=> (+ .3 1.7)
2.1
user=>
:)
Shouldn't be hard to figure out how to put a repl in a state where
that expression will evaluate to that result. I'm sure
mathematicians everywhere are deeply offended by the clojure
reader now. :)
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