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Comment by joe_the_user | Hacker News Reader

Oddly enough I'm back to C++ too, after Ruby.

One nice thing is; in a fast language, tests run quickly too.

Also, Python and Ruby don't have the equivalent of an ASSERT (you could roll your own but it's not standard practice).

Also, C++ has standard hash lists and complicated data structure are actually going to run quickly.

And while memory management can be a pain, you are doing it yourself so you can track down memory leaks rather than having them be inherent in the interpreter...

...as in Ruby AND Mono.

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Also, Python and Ruby don't have the equivalent of an ASSERT (you could roll your own but it's not standard practice).

Ahem:

http://docs.python.org/reference/simple_stmts.html#the-asser...

C++ doesn't actually have a standard "hash list" (I assume you meant hash map or hash set?). Depending on your implementation, you either have hash_{map,set}, unordered_{map,set}, both, or something entirely different. tr1 specified unordered_{map,set}, but tr1 is only technically a proposal, not a standard.

I think a safe assumption is that tr1::unordered_{map,set} will be available in all implementations by now, but until C++0x is ratified and implemented by major compilers, you will run into different platforms having (possibly) different implementations. And lets be honest - even after C++0x has been implemented in major compilers, you will still have subtly different/buggy implementations.

edit: I had conflated {hash,unordered}_{set,map}. Fixed

Nah, the committee isn't going to change unordered_set or unordered_map; they're struggling with far more urgent things, to finish the std off. Those have already gotten the full treatment, they have the usual std:: collection interface; what's to change?

Or you can use boost::unordered_set right now, in any compiler, whether it supports tr1 or not.

RubyOnRails is very test gunghu, but to run a hello world test takes seconds, anyone know why? This seems very odd. Is this one of those do what I preach, not what I do things?

I doubt it takes seconds to test a hello world program in Ruby. However, to test a hello world Rails application is a different story, as you have to start up the web server, which takes seconds (even though it eventually just serves a simple page).

Not necessarily the web server.

Standard `rake test:units` (or even `ruby test/units/model_test.rb`) takes the whole Rails stack so it adds up.

You're right and I agree. But let's be careful not to equate Rails with Ruby. Rails tests may have a slow startup time, but Ruby tests do not and other Ruby web framework tests may not.

Because if "performance doesn't matter" is repeated often enough people actually start to believe it, and if enough people believe it, it becomes false. Is there a name for this logic? :-)

Confirmational Bias followed by a Self-fulfilling Prophecy. But you knew that and I think your question was purely rhetorical ;-)

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