I found a way to include a "using" command inside a function without the
Requires.jl package or needing to qualify the "new" package functions'
names with a prefix. It is an easy way to achieve a "lazymode" effect. So I
am sharing in case someone is interested.
As example, inside the function I mentioned initially (fwhm, which
estimates the full width at half maximum of a noisy peak), instead of
adding:
if dodraw
using Gadfly
end
(which errors), I add the line:
dodraw && eval(parse("using Gadfly"))
To my surprise, this works for me. Of course the first time fwhm(...,
dodraw = true) is called, the function has an overhead wait while loading
the Gadfly package. But the next times it is fast.
And inside the function I do not need to be writing Gadfly.plot(...) or
gadfly().plot(...), etc.; plot(...) just works.
I am sure this must be a terrible hack in some ways I don't know and very
bad Julian manners in general for reasons I ignore. Or maybe this would not
have worked in v.0.3. But in v.0.4 it just does the trick for me. When I
call fwhm(...,dodraw=true) I am normally not so interested in performance;
and if I want it fast I do dodraw=false and the command eval(parse("using
Gadfly")) is not even executed.
