[swift-users] Parameter Validation

[Jan Neumüller]

> On 07.12.2015, at 20:03, Jens Alfke <jens at mooseyard.com> wrote:
> 
> 
>> On Dec 7, 2015, at 10:56 AM, Jan Neumüller via swift-users <swift-users at swift.org <mailto:swift-users at swift.org>> wrote:
>> 
>> But what overhead? As you know Swift has *NO* exceptions. It’s just syntax sugar for normale error values.
> 
> Mostly the overhead in the caller of having to pass a (hidden) error parameter into the call, and check the return value and branch afterwards.

I fail to see any overhead here. Its the absolute minimum to get checked values. Anything less is not checking.

Jan

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