Unpopular opinion: C++ `auto` should be almost always avoided. The only thing it gives is code that is harder to read, maintain and debug.
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Tämä twiitti ei ole saatavilla.
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I don't use templates and never need to iterate over a hash table. Haven't used auto in at least three years. Don't see any reason to use it. Makes code less understandable.
Counterpoint: Templates can be a good way to flatten branchy code when performance is critical. You could of course use preproc macros to emit multiple versions of a function, but why, when the language will do it for you?