Ok, so to give myself a safe and consistent way to reason about this the addition operator, and probably other arithmetic operator dont promote ouput
so long+ long = long or exception long + bigint = bigint if i need outpout promition i can use +' hmmm, a bit tricky On Friday, September 4, 2015 at 10:51:15 AM UTC-4, dennis wrote: > > Because the literal is readed as BigInt: > > user=> (class 6546546546546546546850348954895480584039545804 ) > clojure.lang.BigInt > > 2015-09-04 22:48 GMT+08:00 Ali M <tclwa...@gmail.com <javascript:>>: > >> why? >> >> <REPL> >> user=> (+ 6546546546546546546850348954895480584039545804 >> 7548979534287548957345843954749357348757897) >> 6554095526080834095807694798850229941388303701N >> >> user=> (+ Long/MAX_VALUE Long/MAX_VALUE) >> >> ArithmeticException integer overflow >> clojure.lang.Numbers.throwIntOverflow (Numbers.java:1501) >> >> user=> Long/MAX_VALUE >> 9223372036854775807 >> </REPL> >> >> Why the much bigger numbers get promoted, and a smaller number overflows? >> >> Thank you >> Ali >> >> -- >> You received this message because you are subscribed to the Google >> Groups "Clojure" group. >> To post to this group, send email to clo...@googlegroups.com >> <javascript:> >> Note that posts from new members are moderated - please be patient with >> your first post. >> To unsubscribe from this group, send email to >> clojure+u...@googlegroups.com <javascript:> >> For more options, visit this group at >> http://groups.google.com/group/clojure?hl=en >> --- >> You received this message because you are subscribed to the Google Groups >> "Clojure" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to clojure+u...@googlegroups.com <javascript:>. >> For more options, visit https://groups.google.com/d/optout. >> > > > > -- > 庄晓丹 > Email: killm...@gmail.com <javascript:> xzh...@avos.com > <javascript:> > Site: http://fnil.net > Twitter: @killme2008 > > > -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups "Clojure" group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
