Hello,
I think I want to use the `@task` idiom for a generator, but I can't wrap
my head around macros, so I don't understand where this goes wrong:
linebyline(file::IO) = @task while !eof(file)
produce(readline(file))
end
linebyline(file::AbstractString) = open(file) do fd
linebyline(fd)
end
The first construction works, and operates on a `IO` object. If I want to
dispatch the same construction using a file name, as in the second example,
I get an empty result.
for line in linebyline("input.txt") ## `linebyline(open("input.txt"))`
would work here
println(line)
end
## nothing happens here
I think I don't understand macros, I generally try to evade them, but the
generator construction is quite nice.
---david
