Paying a couple hundred quid to hire me for two weeks is free. When I said expenses, it was the cost of getting there and putting me somewhere to sleep (not hotels mostly, thankfully).
By charging that small amount, it means they're serious about bringing me in because it demonstrates commitment.
I paid for my own upkeep over this time and burned through the best part of 25k EUR - all worth it.
I see what you did there.
And as Joeboy says, it would be months. I can say this with confidence because i know enough about C to know how little i know about it. Just the thought of memory management and all the complexities involved makes my skin crawl.
I feel confident that if I was asked to do C at one of these gigs I'd have been able to deliver something useful. Perhaps less if it was C++ because it's a bit swiss-army knife and there are a lot more "don'ts" to pick up.
I'm only saying: Some skills are so radically different that you cannot transfer easily from one to the other. To give a counter example in the other direction: When i taught a former Lisp developer Perl, it took him 3 months to get to a good level, and 3 more to be on a very high level. And he's an extremely bright guy.
Then again, he had never done web apps before. Maybe the language matters a lot less if you're staying within the same problem domain.
If you asked me tomorrow to go and start doing system programming in a language I knew well, I'd probably be screwed. Ask me to work on a database engine, compiler or web app and I'd be okay.
I'm mainly focusing that ire on the typical enterprise stuff LOB stuff, where it truely is all the same and just because you'd been writing Foo v1 for three years doesn't mean you won't be able to write Bar v300
Those two things do not mean the same thing.
> Experience in Tool/Language X is a stupid thing to ask for
I'm pretty sure my experience with Perl won't allow me to write useful C within two days, no matter how experienced my coworkers.
It would've been much more interesting to read about how he actually found his "jobs".