[GitHub] eiri commented on issue #1890: Remove usage of tuple calls for OTP 21.x compatibility.

[GitBox <gi...@apache.org>]

eiri commented on issue #1890: Remove usage of tuple calls for OTP 21.x compatibility.
URL: https://github.com/apache/couchdb/issues/1890#issuecomment-459093626
 
 
   @wohali yes, `element/2` and `apply/3` are going back as far as OTP R10 at lease and the change snippet itself is pretty much what compiler does for the tuple calls behind the scene when flag `tuple_calls` is set. The flag itself was added in OTP 21 for back compatibility and @nickva set it in #1640. We have until OTP 24 until this back compatibility removed.
   
   There are an option not to use somehow obscure `apply` dance, but just call `mochiweb_request` directly, i.e. instead of `RawUri = MochiReq:get(raw_path),` do `RawUri = mochiweb_request:get(raw_path, MochiReq),`, but it depends on how mochiweb is going to address removing tuple calls, they may introduce now module as a frontend or start requiring `parse_transform` in style of `lager`. 
   
   

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