I've found this troublesome too when starting out. The compiler does catch the obvious cases but there's still many that slip through. I found that I'm more careful now and overall don't find it too troublesome anymore. I guess you just get used to it. It would be nice if the compiler could warn you though.
On Sun, 9 Nov 2014 19:07 Glen Mailer <[email protected]> wrote: > Hi Everyone, > > I'm new to ClojureScript, but I've been doing Clojure for a while, and > this was something that's been catching me out a lot. > > In Clojure, attempts to use an undefined var result in a compiler error, > whereas in CLJS they are left to fail at runtime. Presumably this is to > play nicely with the more dynamic JavaScript environment. > > However, because function calls expand to > > namespace.whatever.func.call(null, //... > > Then if i've typoed my function call or mixed something up somewhere, I > get the rather cryptic > > TypeError: Cannot call method 'call' of undefined > > > I'm finding this is especially awkward if i'm passing functions around or > there's a few invocations on the same line, and it's not obvious which one > of the function calls is actually the bad one. > > > > Is this something that happens less once you get used to ClojureScript? > Are there some tricks I can do to avoid making these mistakes? > Would it be possible to tweak the compiler to warn about undefined "var" > usage? > If compile-time warnings are too restrictive, would it be possible to have > a compilation mode where i get something like > safeCall(namespace.whatever.func, "namespace.whatever.func", // .... > which can tell me what the invocation looked like that failed? > > > > I hope that makes sense! > > Cheers > Glen > > -- > Note that posts from new members are moderated - please be patient with > your first post. > --- > You received this message because you are subscribed to the Google Groups > "ClojureScript" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To post to this group, send email to [email protected]. > Visit this group at http://groups.google.com/group/clojurescript. > -- Note that posts from new members are moderated - please be patient with your first post. --- You received this message because you are subscribed to the Google Groups "ClojureScript" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/clojurescript.
