eval namespaces

[vtjnash]

rather than hack in a pseudo-namespace by prefixing your variables with __, the addcomments example should just use a real namespace (module)
https://github.com/samuelcolvin/JuliaByExample/blob/master/common_usage/addcomments.jl#L20

module MyNamespace
end

eval(MyNamespace, expr)

[vtjnash]

(it should likely also have a try/finally, so you can ensure the STDOUT redirect is removed before returning)

[samuelcolvin]

Not sure try/catch would help. If the script being evaluated throws an except addcommnts.jl should stop and show that exception as it does not.

Slightly pedantic point for clarification: this isn't actually an example, but a utility for inserting STDOUT as comments: it's not showed on the actual site. I should probably move it to another directory to make that more clear.