On 14/11/2012 09:58, Merlijn van Deen wrote:
On 14 November 2012 10:12, Chris Withers <ch...@simplistix.co.uk> wrote:
...which made me a little sad
Why did it make you sad? dict() takes 0.2µs, {} takes 0.04µs. In other
words: you can run dict() _five million_ times per second, and {}
twenty-five million times per second. That is 'a lot' and 'a lot'. It
also means you are unlikely to notice the difference in real-world
code. Just use the one you feel is clearer in the situation, and don't
worry about micro-optimalization.
I'm inclined to agree, but it makes me sad for two reasons:
- it's something that people get hung up on, for better or worse. (if it
wasn't, Doug wouldn't have written his article)
- it can make a difference, for example setting up a dict with many keys
at the core of a type loop.
Without looking at implementation, they should logically perform the same...
Chris
--
Simplistix - Content Management, Batch Processing & Python Consulting
- http://www.simplistix.co.uk
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