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Exceptionally Bad: The Misuse of Exceptions in C++ & How to Do Better - Peter Muldoon - CppCon 2023
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Exceptions were originally heralded as a new modern way to handle errors. However the C++ community is split as to whether exceptions are useful or should be banned outright. It has not helped the pro-exception lobby that in their enthusiasm to embrace exceptions, a lot of code has been written that puts exceptions in a bad light.
In this talk, We will present the original intent/history of exceptions and a brief overview of how exception mechanics work and how they circumvent the usual stack return mechanism to set the stage. we will then examine the philosophy of using exceptions and then the many cases of exception misuse including resource management, retries, hierarchies, data passing and control flow to name but a few.
For each case, we will then suggest better ways to handle each specific situation. In many cases, exceptions are often dropped in favor of some other more appropriate paradigm.
Finally, we will introduce situations that can truly benefit from exceptions and what a model exception class might look like.
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Peter Muldoon
Pete Muldoon has been using C++ since 1991. Pete has worked in Ireland, England and the USA and is currently employed by Bloomberg as a senior Engineering Lead. A consultant for over 20 years prior to joining Bloomberg, Peter has worked on a broad range of projects and code bases in a large number of companies both tech and finance. Such broad exposure has, over time, shown what works and what doesn't for large scale engineering projects. He's a proponent of applied engineering principles, elegant solutions and expressive code.
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