Re: Question on `cljx` and `lein-dalap`
Thanks, Chas! Appreciate the detailed reply. Shantanu On Monday, 12 August 2013 21:26:31 UTC+5:30, Chas Emerick wrote: > > > On Aug 11, 2013, at 5:19 PM, Shantanu Kumar wrote: > > > Hi, > > > > I am thinking about how to use Cljx correctly in my projects (for > portability); I have few questions: > > > > 1. I understand the Cljx plugin generates .clj and .cljs source code in > target/classes destination. Does that mean, when I generate a JAR for > distribution it again must be processed by Cljx to generate variant > specific code at runtime? (Is my assumption correct?) > > > > 2. Does Cljx support ClojureCLR yet? I noticed one mention of `clr` on > the Cljx README but haven't heard anybody using yet. > > > > 3. On what occasion should I consider lein-dalap instead of Cljx? > > Hi Shantanu, > > Some answers: > > 1. Yes, cljx implies a transformation step each time you need to package > Clojure or ClojureScript code, whatever the context. The Leiningen plugin, > hooks, and nREPL middleware (so as to make loading code from .cljx files > directly into REPL sessions, whether they be Clojure- or > ClojureScript-flavoured [via piggieback]) are all provided to make this as > painless as possible. > > 2. No, cljx does not support ClojureCLR (yet?). Doing this would be quite > straightforward: add a clr-rules map (similar to those found @ > https://github.com/lynaghk/cljx/blob/master/src/cljx/rules.clj#L71), and > a suitable shortcut for it in the plugin itself (around > https://github.com/lynaghk/cljx/blob/master/src/cljx/core.clj#L78). (The > latter can probably be generalized into a map lookup once there's three > default rulesets.) That will take care of emitting the right code when > `lein cljx` is run. nREPL middleware for ClojureCLR (do such things exist > yet?) is another matter; that may be a reason for at least some parts of > cljx to be written in cljx. ;-) > > I think some uncontroversial points of contrast between cljx and > lein-dalap might be: > > * cljx does not privilege any particular target; lein-dalap > assumes/requires Clojure code as its primary representation > * cljx's transformations are completely static (i.e. they are made long > before any of your code is touched by the Clojure runtime, including the > reader); lein-dalap uses either reader or runtime metadata (I can't recall > at the moment) to inform its transformations. > > I contribute and use cljx, so I hope my preference/bias is clear. > > Cheers, > > - Chas -- -- 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.
Re: Question on `cljx` and `lein-dalap`
On Aug 11, 2013, at 5:19 PM, Shantanu Kumar wrote: > Hi, > > I am thinking about how to use Cljx correctly in my projects (for > portability); I have few questions: > > 1. I understand the Cljx plugin generates .clj and .cljs source code in > target/classes destination. Does that mean, when I generate a JAR for > distribution it again must be processed by Cljx to generate variant specific > code at runtime? (Is my assumption correct?) > > 2. Does Cljx support ClojureCLR yet? I noticed one mention of `clr` on the > Cljx README but haven't heard anybody using yet. > > 3. On what occasion should I consider lein-dalap instead of Cljx? Hi Shantanu, Some answers: 1. Yes, cljx implies a transformation step each time you need to package Clojure or ClojureScript code, whatever the context. The Leiningen plugin, hooks, and nREPL middleware (so as to make loading code from .cljx files directly into REPL sessions, whether they be Clojure- or ClojureScript-flavoured [via piggieback]) are all provided to make this as painless as possible. 2. No, cljx does not support ClojureCLR (yet?). Doing this would be quite straightforward: add a clr-rules map (similar to those found @ https://github.com/lynaghk/cljx/blob/master/src/cljx/rules.clj#L71), and a suitable shortcut for it in the plugin itself (around https://github.com/lynaghk/cljx/blob/master/src/cljx/core.clj#L78). (The latter can probably be generalized into a map lookup once there's three default rulesets.) That will take care of emitting the right code when `lein cljx` is run. nREPL middleware for ClojureCLR (do such things exist yet?) is another matter; that may be a reason for at least some parts of cljx to be written in cljx. ;-) I think some uncontroversial points of contrast between cljx and lein-dalap might be: * cljx does not privilege any particular target; lein-dalap assumes/requires Clojure code as its primary representation * cljx's transformations are completely static (i.e. they are made long before any of your code is touched by the Clojure runtime, including the reader); lein-dalap uses either reader or runtime metadata (I can't recall at the moment) to inform its transformations. I contribute and use cljx, so I hope my preference/bias is clear. Cheers, - Chas -- -- 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.
Question on `cljx` and `lein-dalap`
Hi, I am thinking about how to use Cljx correctly in my projects (for portability); I have few questions: 1. I understand the Cljx plugin generates .clj and .cljs source code in target/classes destination. Does that mean, when I generate a JAR for distribution it again must be processed by Cljx to generate variant specific code at runtime? (Is my assumption correct?) 2. Does Cljx support ClojureCLR yet? I noticed one mention of `clr` on the Cljx README but haven't heard anybody using yet. 3. On what occasion should I consider lein-dalap instead of Cljx? Shantanu -- -- 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.
