It might be useful, though, to be able to enable warnings for shadowed variables.
On 12 February 2013 17:38, Timothy Baldridge <tbaldri...@gmail.com> wrote: > This sort of pattern is used quite a lot in clojure (even in core): > > (let [data (if (string? data) (read-string data) data) > data (if (string? (first data)) (first data) (next data)) > data (if (string? (first data)) (first data) (next data))] > data) > > Throwing exceptions on overridden variable names would not only break > Clojure code, but also is very "non-lispy". > > Timothy > > > > On Tue, Feb 12, 2013 at 6:31 AM, AtKaaZ <atk...@gmail.com> wrote: >> >> it makes sense to not throw now that I think about it, when using "_" >> instead of "a" >> I'm also thinking of cases like: >> => (let [a 1] >> (let [b 2 a 3] >> (println a b))) >> 3 2 >> nil >> >> is there something that would let me know I'm overwriting "a" ? I figure >> if something like this would slip by would be tough to track down >> >> >> On Tue, Feb 12, 2013 at 1:46 PM, Michael Wood <esiot...@gmail.com> wrote: >>> >>> On 12 February 2013 12:28, AtKaaZ <atk...@gmail.com> wrote: >>> > what would this do: >>> > >>> > (let [a 1, a 2] a) >>> > becomes: >>> > (let [a 1, a123 2] a) >>> > or >>> > (let [a 1, a123 2] a123) >>> > or >>> > exception[I prefer] >>> >>> It would be the second option, i.e.: >>> >>> (let [a 1, a123 2] a123) >>> >>> The original code is valid, so it would not throw an exception. >>> >>> > On Tue, Feb 12, 2013 at 7:10 AM, Ambrose Bonnaire-Sergeant >>> > <abonnaireserge...@gmail.com> wrote: >>> >> >>> >> Processing a hygienic AST relieves the burden of worrying about >>> >> shadowing >>> >> of locals. >>> >> >>> >> Wherever a binding would normally be shadowed, it is instead renamed >>> >> to a >>> >> local binding currently not in scope. >>> >> >>> >> eg. (let [a 1, a a] a) >>> >> >>> >> becomes >>> >> >>> >> (let [a 1, a123 a] a123) >>> >> >>> >> It can be useful for those processing Clojure's analysis results. >>> >> >>> >> Thanks, >>> >> Ambrose >>> >> >>> >> >>> >> On Tue, Feb 12, 2013 at 1:54 AM, kovas boguta <kovas.bog...@gmail.com> >>> >> wrote: >>> >>> >>> >>> What is a hygienic AST? >>> >>> >>> >>> Thanks >>> >>> k >>> >>> >>> >>> >>> >>> On Sun, Feb 10, 2013 at 10:45 PM, Ambrose Bonnaire-Sergeant >>> >>> <abonnaireserge...@gmail.com> wrote: >>> >>> > Hi everyone, >>> >>> > >>> >>> > Happy to release analyze 0.3.0 with new hygienic code >>> >>> > transformation >>> >>> > capabilities. >>> >>> > >>> >>> > [analyze "0.3.0"] >>> >>> > >>> >>> > In a line: >>> >>> > >>> >>> > analyze.hygienic=> (-> (ast (let [a 1 a a b a a a] a)) ast-hy >>> >>> > emit-hy) >>> >>> > ((fn* ([] (let* [a 1 a2921 a b a2921 a2922 a2921] a2922)))) >>> >>> > >>> >>> > Hygienic AST's have enabled large performance boosts in core.typed. >>> >>> > I'm >>> >>> > excited to see how it could >>> >>> > be as useful to others. >>> >>> > >>> >>> > Note: "hygienic" AST's (those transformed with >>> >>> > `analyze.hygienic/ast-hy` can >>> >>> > be printed normally with `analyze.emit-form/emit-form`, and >>> >>> > hygienically >>> >>> > with `analyze.hygienic/emit-hy`. >>> >>> > >>> >>> > https://github.com/frenchy64/analyze >>> >>> > >>> >>> > Thanks, >>> >>> > Ambrose >>> >>> > >>> >>> > -- >>> >>> > -- >>> >>> > 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 - 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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/groups/opt_out. >>> >> >>> >> >>> > >>> > >>> > >>> > >>> > -- >>> > Please correct me if I'm wrong or incomplete, >>> > even if you think I'll subconsciously hate it. >>> > >>> > -- >>> > -- >>> > 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/groups/opt_out. >>> > >>> > >>> >>> >>> >>> -- >>> Michael Wood <esiot...@gmail.com> >>> >>> -- >>> -- >>> 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/groups/opt_out. >>> >>> >> >> >> >> -- >> Please correct me if I'm wrong or incomplete, >> even if you think I'll subconsciously hate it. >> >> -- >> -- >> 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/groups/opt_out. >> >> > > > > > -- > “One of the main causes of the fall of the Roman Empire was that–lacking > zero–they had no way to indicate successful termination of their C > programs.” > (Robert Firth) > > -- > -- > 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 - 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