i agree with the fast fail camp if a value is nil but is not supposed to be, i want the program to immediately tell me about that instead of telling me later and force me to trace it back.
in scala, this is solved by providing 2 methods. one that gives you a result or crashes, one that maybe gives you a result and never crashes, depending on your use case. 2016-01-12 23:03 GMT+01:00 Gregg Reynolds <d...@mobileink.com>: > > On Jan 12, 2016 2:25 PM, "mattias w" <matti...@gmail.com> wrote: > > > > Clojure and Erlang are very similar, except for the syntax, macros and > that you can use Java libraries. > > > > There is one big difference: In Erlang, fail as early as possible is the > norm. In Clojure it is almost the opposite. > > > > Many errors in Clojure code will result in nil, and most operations > accept nil as a valid parameter, i.e. many fails will not even be visible > unless you check the result. > > > > The most common I stumble on is assuming that a value exists in a map, > but that is just the top of the iceberg > > Not finding what you're looking for is not failure. Nil means you have > successfully discovered that you can't always get what you want. There is > no error there. > > Gregg > > -- > 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. > -- 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.
