[webkit-dev] When to use "auto"? (I usually consider it harmful)

Geoffrey Garen ggaren at apple.com
Tue Jan 7 11:07:19 PST 2014

>>> If I had to describe this algorithm in English, I’d say, “Collect and retain all the [auto] from the list of parsed parameters.” I think that explanation would be stronger if “[auto]” were a concrete noun.
>> The variable and the function are both named pattern and I would use that as the noun.
> Question for Geoff or anyone who knows: is it contextually useful to know that it's specifically a "DeconstructionPatternNode*" beyond knowing that it's a "pattern”?

For me, knowing that it’s a “DeconstructionPatternNode” tells me where to go in source code to find out more. Namely:

- Why do we need manual reference counting here? (Answer: DeconstructionPatternNode allocates variable-sized storage within itself, and aliases that storage as untyped memory.)

- Is this normal reference counting, or something weird? (Answer: DeconstructionPatternNode inherits from RefCounted<DeconstructionPatternNode>, so this is normal reference counting.)

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