Things I Felt Like Posting

Error Handling in Ruby

I've recently begun learning Ruby by working my way through the Ruby Koans. I finally made it to the section on error handling, which answered a few questions for me.

Once again, Ruby has not surprised me (this is a good thing). There's just some minor syntactical differences. Specifically in place of "try, catch, finally" Ruby uses "begin, rescue, ensure".

  fail "Oops"
rescue StandardError => ex
  #Do something with the error
  result = :code_that_always_runs

Since I haven't made it all the way through the koans yet I'm, probably missing something that seems obvious to long time Ruby users, but so far it's pretty damned simple.

Useful WCF Behaviors - IErrorHandler

Behaviors in WCF are so stinking useful, and once you get past the basics of WCF they're arguably a necessity. Microsoft has saved itself from hundreds of hours of cursing by including the ability to define custom behaviors.

My favorite use of behaviors is addressing some cross cutting concerns that we consistently have in our WCF services. Specifically logging, service registration, wsdl tweaking, and error handling. Which brings us around to the IErrorHandler interface.