You did not get a warning that "symbol" was overriding the core symbol fn ?

Luc P.

> Yesterday, I spent hours trying to figure out why some code didn't work. 
> The code is like so:
> (defn replace-symbol-in-ast-node [old new ast]
>   (tree-replace (symbol old) (symbol new) ast))
> 
> I use tree-replace directly like this:
> (ast/tree-replace (symbol 'a) (symbol 'c) (ast/sexp->parsley '(+ a b)))
> 
> I thought the result would the the same but I was wrong. After hours of 
> thinking, I finally figured it out.
> Guess what? The 'symbol' function in the first code snippet is not the 
> standard 'symbol'. It actually is:
> (defn symbol [sym]
>   (make-node :atom (core/vector (name sym))))
> 
> It's defined in another library. But I stupidly thought it was the standard 
> 'symbol'.
> Part of this was my fault, I guess. I shouldn't have taken it for granted 
> and guessed its meaning. But who know? 
> In my opinion if we use less :use, it would easier for others to read our 
> code and less likely to misunderstand the meaning, or at least *Do Not Use 
> *those 
> standard names*.*
> 
> 
> On Wednesday, July 24, 2013 1:50:50 AM UTC+10, Greg wrote:
> >
> > I think I read somewhere that :use is no longer encouraged, but I could be 
> > mistaken. 
> >
> > From what I've read, it seems like most people agree that Clojure has too 
> > many ways of including/importing/referencing/requiring/using things: 
> >
> >
> > http://blog.8thlight.com/colin-jones/2010/12/05/clojure-libs-and-namespaces-require-use-import-and-ns.html
> >  
> >
> > The above gives a very nice explanation of all the various difference, but 
> > it also acknowledges their complexity. 
> >
> > Since :use uses :require, and since :require can do everything that :use 
> > can, can we simplify Clojure programming a bit for newcomers by deprecating 
> > the use of :use? The situation in ClojureScript is even worse because it 
> > adds :require-macros on top of all the other ways of including files. 
> >
> > Ideally, it would be awesome if there was just a single directive for 
> > everything, but perhaps there's some complicated low-level reason why 
> > that's not possible. :-\ 
> >
> > Thoughts? 
> >
> > Thanks, 
> > Greg 
> >
> > P.S. If this has already been brought up you have my sincere apologies. 
> >
> > -- 
> > Please do not email me anything that you are not comfortable also sharing 
> > with the NSA. 
> >
> >
> 
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