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Questions tagged [parse-transform]

7 questions
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Why are programmers "strongly advised not to engage in parse transformations"?

According to the erl_id_trans documentation: Programmers are strongly advised not to engage in parse transformations and no support is offered for problems encountered. Why are programmers strongly advised not to use parse_transform/2? Will this…
justin
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Lager - Parse Transforms

I have added Lager to my application using rebar. It compiles fine and Lager starts ok when I start my app. However, I get undef messages when I call lager:debug/1 which tells me that the lager_transform parse transformation is not being picked up,…
Myles McDonnell
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2 answers

Lager calls failing during Common Test test runs

I decided to setup lager in my Erlang project. I am using erlang.mk, so I added ERLC_OPTS = +'{parse_transform, lager_transform}' to my Makefile. I can run make all and compile the modules without errors. I can also start an erl console and run…
Stratus3D
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How would you add capabilities to Erlang without making a new language?

I was wondering how someone would go about adding Capability-based security to Erlang without making it into a new language and preserving maximum backwards compatibility on the application side?
Eric des Courtis
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erlang: function called with real 'fun' should be transformed with parse_transform?

I'm looking at the O'Reilly Erlang Programming book and there's an example that is run in the erlang shell that looks like this: 17> MS = ets:fun2ms(fun({Name,Country,Job}) when Job /= cook -> [Country,Name] end). [ ....an erlang…
Sniggerfardimungus
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Erlang parse_transform second parameter

When defining a parse_transform, the function has two parameters: parse_transform(FormsIn, Options) -> FormsOut What is the meaning of the Options parameter? I'm trying to define additional options for transforming.
hairyhum
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How to use dialyzer with parse transform modules

I'm trying to use dialyzer on my erlang application but here's the output : dialyzer \ --src -r src \ -pa /home/niahoo/src/popos \ -pa /home/niahoo/src/popos/deps/parse_trans \ --verbose Checking whether the PLT…
lud
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