Thank you for the link. However, I am familiar with interpolation. What I don't understand is how you change `test2` in order to use it. Because there's no quote directly in that macro, Julia will complain about using '$' in a non-quoted expression.
On Wednesday, March 18, 2015 at 8:37:25 AM UTC-4, Isaiah wrote: > > See > http://docs.julialang.org/en/release-0.3/manual/metaprogramming/#interpolation > On Mar 18, 2015 8:08 AM, "Abe Schneider" <abe.sc...@gmail.com > <javascript:>> wrote: > >> If I do something simple like: >> >> macro test() >> :(parsefloat("3.1459")) >> end >> >> @test() >> >> # 3.1459 >> >> everything works as expected. However, if I try this instead: >> >> macro test2(ex) >> ex >> end >> >> @test2(:(parsefloat("3.1459"))) >> >> # :(parsefloat("3.1459")) >> >> >> Not what I expected, but it makes sense what's happening: >> >> macroexpand(:(@test(:(parsefloat("3.1459"))))) >> >> # :($(Expr(:copyast, :(:(parsefloat("3.1459")))))) >> >> So, anything I pass to the macro is automatically quoted. Obviously if I >> just do: >> >> @test2(parsefloat("3.1459")) >> >> it will work. However, the use-case I'm trying to deal with is that I >> have an Expr that I would like inserted into the AST. Besides being frowned >> on, I can't eval, due to not wanting things to be evaluated in global space. >> >> Is there some way I can unquote the expression in the macro for test2? >> >
